Grizzly 60773 User Manual

MODEL G0773

12" X 27" COMBO LATHE/MILL

OWNER'S MANUAL

(For models manufactured since 12/14)

COPYRIGHT © MARCH, 2015 BY GRIZZLY INDUSTRIAL, INC.

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

# WKBB17019 PRINTED IN CHINA

V1. 0 3.15

This manual provides critical safety instructions on the proper setup,
operation, maintenance, and service of this machine/tool. Save this
document, refer to it often, and use it to instruct other operators.

Failure to read, understand and follow the instructions in this manual
may result in fire or serious personal injury—including amputation,
electrocution, or death.

The owner of this machine/tool is solely responsible for its safe use.
This responsibility includes but is not limited to proper installation in
a safe environment, personnel training and usage authorization,
proper inspection and maintenance, manual availability and compre­hension, application of safety devices, cutting/sanding/grinding tool
integrity, and the usage of personal protective equipment.

The manufacturer will not be held liable for injury or property damage
from negligence, improper training, machine modifications or misuse.

Some dust created by power sanding, sawing, grinding, drilling, and
other construction activities contains chemicals known to the State
of California to cause cancer, birth defects or other reproductive
harm. Some examples of these chemicals are:

• Lead from lead-based paints.

• Crystalline silica from bricks, cement and other masonry products.

• Arsenic and chromium from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you
do this type of work. To reduce your exposure to these chemicals:
Work in a well ventilated area, and work with approved safety equip­ment, such as those dust masks that are specially designed to filter
out microscopic particles.

Table of Contents

INTRODUCTION ............................................... 2

Machine Description ...................................... 2

Contact Info.................................................... 2

Manual Accuracy ........................................... 2

Identification ................................................... 3

Controls & Components ................................. 4

G0773 Data Sheet ......................................... 7

SECTION 1: SAFETY ..................................... 10

Safety Instructions for Machinery ................ 10

Additional Safety for Metal Lathes ............... 12

Additional Safety for Mills ............................ 13

Additional Lathe Chuck Safety..................... 14

SECTION 2: POWER SUPPLY ...................... 15

SECTION 3: SETUP ....................................... 17

Setup Overview............................................ 17

Unpacking .................................................... 17

Needed for Setup ......................................... 17

Inventory ...................................................... 18

Cleanup ........................................................ 19

Site Considerations ...................................... 20

Lifting & Placing ........................................... 21

Mounting & Leveling .................................... 22

Assembly ..................................................... 23

Test Run ...................................................... 24

Spindle Break-In .......................................... 26

Recommended Adjustments ........................ 26

SECTION 4: LATHE OPERATIONS .............. 27

Operation Overview ..................................... 27

Chuck Mounting ........................................... 28

Installation & Removal Device ..................... 28

Chuck Installation......................................... 28

Chuck Removal............................................ 30

Scroll Chuck Clamping ................................ 30

Changing Jaw Set ........................................ 31

Tailstock ....................................................... 32

Dead Centers ............................................... 36

Compound Rest ........................................... 38

Four-Way Tool Post ..................................... 38

Manual Feed ................................................ 40

Spindle Speed.............................................. 41

Understanding Gear Charts ......................... 42

Power Feed.................................................. 44

End Gears .................................................... 46

Threading ..................................................... 49

SECTION 5: MILL OPERATIONS .................. 51

Operation Overview ..................................... 51

Removing Compound Rest .......................... 52

Headstock Movement .................................. 52

Table Travel ................................................. 53

Installing/Removing Tooling ......................... 54

Spindle Speed.............................................. 56

SECTION 6: ACCESSORIES ......................... 57

SECTION 7: MAINTENANCE ......................... 61

Schedule ...................................................... 61

Cleaning/Protecting ...................................... 61

Lubrication ................................................... 62

Machine Storage .......................................... 66

SECTION 8: SERVICE ................................... 67

Troubleshooting ........................................... 67

Tensioning & Replacing V-Belts .................. 70

Adjusting Backlash....................................... 71

Adjusting Leadscrew End Play .................... 71

Adjusting Gibs .............................................. 72

Adjusting Half Nut ........................................ 73

SECTION 8: WIRING ...................................... 74

Wiring Safety Instructions ............................ 74

Wiring Overview ........................................... 75

Wiring Diagram ............................................ 76

Wiring Photos............................................... 77

SECTION 10: PARTS ..................................... 78

Accessories .................................................. 78

Lathe Bed..................................................... 79

Tailstock ....................................................... 82

Tool Post ...................................................... 83

Cross Slide................................................... 84

Apron ........................................................... 86

Apron Parts List ........................................... 87

Gearbox ....................................................... 88

Change Gears.............................................. 90

Motor & Drive ............................................... 92

Mill ................................................................ 94

Labels & Cosmetics ..................................... 97

SECTION 11: APPENDIX ............................... 98

Threading & Feeding Chart ......................... 98

Thread Dial Chart ........................................ 98

WARRANTY & RETURNS ........................... 101

INTRODUCTION

We are proud to provide a high-quality owner’s
manual with your new machine!

We

instruc­tions, specifications, drawings, and photographs
contained inside. Sometimes we make mistakes,
but

also

means that

you receive
will be slightly different than what is shown in
the manual

If you find this to be the case, and the difference
between the manual and machine leaves you
confused about a procedure
for an updated version. W

manuals

and

www.grizzly.com

Alternatively, you can call our Technical Support
for help. Before calling, please write down the

Manufacture Date

stamped
into the machine ID label (see below). This infor­mation helps us determine if updated documenta­tion is available for your machine.

We stand behind our machines. If you have
any questions or need help, use the information
below to contact us. Before contacting, please get
the serial number and manufacture date of your
machine. This will help us help you faster.

We want your feedback on this manual. What did
you like about it? Where could it be improved?
Please take a few minutes to give us feedback.

Machine Description

The Model G0773 12" x 27" Combo Lathe/Mill
features a lathe with 735 Watt (1 HP) 110V motor,
6-speed variable-speed controls, 6" 3-jaw chuck,
a 4-way turret toolpost, and a full length splash
guard.

1

The mill section features a 14
variable speed control, fine and course spindle
downfeed with adjustable depth stop, R8 taper,
and a drilling capacity of

Both section are equipped with emergency stops,
chuck guards, and eye shields for safety.

Contact Info

⁄2 " swing, electronic

1

⁄2 " in cast-iron and steel.

Manual Accuracy

made every effort to be exact with the

our policy of continuous improvement

sometimes the machine

.

, check our website

e post current

manual updates for free on our website at

.

and Serial Number

Grizzly Technical Support

1203 Lycoming Mall Circle

Muncy, PA 17756

Phone: [phone]

Email: [e-mail]

Grizzly Documentation Manager

P.O. Box 2069

Bellingham, WA 98227-2069

Email: [e-mail]

Manufacture Date

Serial Number

-2-

Model G0773 (Mfd. Since 12/14)

Identification

To reduce your risk of
serious injury, read this
entire manual BEFORE

Study the names and locations of the controls and components shown below to familiarize yourself with the
machine and better understand the terms used throughout this manual.

Lathe Power

Light

Spindle

Direction

Switch

Gearbox

Dials

3-Jaw

Chuck

Lathe/Mill

Selector

Switch

On/Off Switch w/
Emergency Stop

Button

Variable-

Speed

Dial

Carriage

Handwheel

Cross Slide

Handwheel

Fine Downfeed

Selection

Half Nut

Lever

Handwheel

Feed

Lever

Coarse

Downfeed

Handwheel

Vertical Travel

Lock Lever

4-Way Tool

Post

Tailstock

Compound Rest

Handwheel

Model G0773 (Mfd. Since 12/14)

using machine.

-3-

Controls &

To reduce your risk of
serious injury, read this
entire manual BEFORE

Components

using machine.

Carriage

F

G

H

Refer to Figures 1–5 and the following descrip­tions to become familiar with the basic controls of
this machine.

Headstock

A

B

C

D

E

Figure 1. Headstock controls.

A. Lathe/Mill Selector Switch: Used to select

between lathe mode (1) or mill mode (2).

B. Spindle Direction Switch: Selects spindle

rotation direction.

I

J

L

M

Figure 2. Carriage controls.

F. Thread Dial: Indicates when to engage half

nut during threading operations.

G. 4-Way Tool Post: Holds up to four cutting

tools at once that can be individually indexed
to workpiece and quickly moved into position
when needed.

H. Compound Rest Handwheel: Moves tool

toward and away from workpiece at preset
compound angle.

I. Cross Slide Table: Supports compound

rest for lathe operations, and workpieces for
milling operations. Includes (2)
spaced 3.55" (90mm) on center, for mounting
milling vises or other fixtures.

K

3

⁄8" T-slots

C. Lathe Power Indicator Light: Illuminates

when Lathe/Mill Selector Switch is set to
lathe mode.

D. ON/OFF Switch w/Emergency Stop Button:

When pressed, cuts power to motor and con­trol panel. To reset, press front tab, lift switch
cover, and press green ON button. Cover
must be unlatched for machine to run.

E. Gearbox Dials: Control rate of carriage

power feed, as indicated in threading and
feeding charts.

-4-

J. Feed Selection Lever: Selects carriage or

cross slide for power feed.

K. Half Nut Lever: Engages/disengages half

nut for threading operations.

L. Cross Slide Handwheel: Moves cross slide

toward and away from workpiece.

M. Carriage Handwheel: Manually moves car-

riage left or right along bedway.

Model G0773 (Mfd. Since 12/14)

Tailstock End Gears, Pulleys, V-Belts

N

N. Tailstock Quill: Equipped with an MT#2

taper to hold centers or other tooling; features
a scale on the side for use as a depth guide.

O. Tailstock Quill Lock Lever: Secures quill

position so it doesn't shift during operations.

P. Tailstock Lock Lever: Secures tailstock

position along bedway.

Q. Graduated Dial: Indicates quill movement in

increments of 0.001", with one full handwheel
revolution equaling 0.04" of quill travel.

O

Q

S

Figure 3. Tailstock controls.

P

R

T U

V

Figure 4. End gears, V-belts, and pulleys.

T. Timing Belt: Used for controlling spindle

speed, power feed speeds, and threading.

U. V-Belt: Transfers power from motor to idler

and spindle pulleys. The position of the V-belt
on idler and spindle pulleys controls spindle
speed.

V. End Gears: The configuration of the end

gears controls the leadscrew speed for power
feeding, and inch and metric threading.

R. Quill Handwheel: Moves quill toward or

away from spindle.

S. Tailstock Offset Screws: Adjust tailstock

offset left or right from spindle centerline
(1 of 2).

Serious personal injury could occur if
you connect the machine to power before
completing the setup process. DO NOT
connect power until instructed to do so later
in this manual.

Model G0773 (Mfd. Since 12/14)

-5-

Milling Headstock

Y

X

W

AE

AB

Z

AA

W. ON/OFF Switch w/Emergency Stop Button:

When pressed, cuts power to motor and con­trol panel. To reset, press front tab, lift switch
cover, and press green ON button. Cover
must be unlatched for machine to run.

X. Mill Fault Light: Illuminates if mill motor is

overloaded.

Y. Fine Vertical Handwheel: Provides preci-

sion control of vertical headstock travel dur­ing setups.

Z. Coarse Vertical Handwheel: Raises and

lowers headstock for Z-axis spindle position­ing during setups.

AA. Vertical Travel Lock Lever: Locks head-

stock position along column.

AD

AC

Figure 5. Milling headstock controls.

AB. Mill Depth Stop: Limits downward move-

ment of mill headstock.

AC. Drill Chuck: Holds drill bit during milling

operations.

AD. Variable-Speed Spindle Control Dial:

Provides variable control of spindle speed
between 100–2500 RPM.

AE. Mill Power Indicator Light: Illuminates when

Lathe/Mill Selector Switch (see Page 4) is set
to milling mode.

-6-

Model G0773 (Mfd. Since 12/14)

MACHINE DATA

SHEET

Customer Service #: [phone] · To Order Call: [phone] · Fax #: [phone]

MODEL G0773 12" X 27" COMBO LATHE/MILL

Product Dimensions:

Weight.............................................................................................................................................................. 546 lbs.

Width (side-to-side) x Depth (front-to-back) x Height........................................................................... 59 x 30 x 33 in.

Footprint (Length x Width)............................................................................................................................ 59 x 30 in.

Shipping Dimensions:

Type.......................................................................................................................................................... Wood Crate

Content........................................................................................................................................................... Machine

Weight.............................................................................................................................................................. 656 lbs.

Length x Width x Height....................................................................................................................... 61 x 27 x 38 in.

Must Ship Upright................................................................................................................................................... Yes

Electrical:

Power Requirement........................................................................................................... 110V, Single-Phase, 60 Hz

Full-Load Current Rating..................................................................................................................................... 11.6A

Minimum Circuit Size.............................................................................................................................................. 15A

Connection Type....................................................................................................................................... Cord & Plug

Power Cord Included.............................................................................................................................................. Yes

Power Cord Length................................................................................................................................................. 6 ft.

Power Cord Gauge......................................................................................................................................... 16 AWG

Plug Included.......................................................................................................................................................... Yes

Included Plug Type.................................................................................................................................... NEMA 5-15

Switch Type....................................................................................................... ON/OFF Push Button w/Safety Cover

Motors:

Mill Spindle

Type.............................................................................................................................................. Brushless DC

Horsepower................................................................................................................................ 5/8 HP (500W)

Phase............................................................................................................................................ Single-Phase

Amps........................................................................................................................................................... 2.8A

Speed................................................................................................................................................ 5000 RPM

Power Transfer ................................................................................................................................. Gear Drive

Bearings........................................................................................................... Shielded & Permanently Sealed

Lathe Spindle

Type................................................................................................................. TEFC Capacitor-Start Induction

Horsepower................................................................................................................................... 1 HP (735W)

Phase............................................................................................................................................ Single-Phase

Amps......................................................................................................................................................... 11.6A

Speed................................................................................................................................................ 1700 RPM

Power Transfer .................................................................................................................................. Belt Drive

Bearings........................................................................................................... Shielded & Permanently Sealed

Model G0773 (Mfd. Since 12/14)

-7-

Main Specifications:

Cross Slide Leadscrew Length............................................................................................................ 13-1/2 in.

Lathe Info

Swing Over Bed......................................................................................................................................... 12 in.

Distance Between Centers.................................................................................................................. 27-1/2 in.

Swing Over Cross Slide......................................................................................................................... 7-3/8 in.

Swing Over Saddle................................................................................................................................ 4-1/2 in.

Maximum Tool Bit Size............................................................................................................................. 1/2 in.

Compound Travel........................................................................................................................................ 3 in.

Carriage Travel.................................................................................................................................... 23-5/8 in.

Cross Slide Travel....................................................................................................................................... 6 in.

Spindle Bore............................................................................................................................. 1-1/2 in. (38mm)

Spindle Taper............................................................................................................................................ MT#5

Number Of Spindle Speeds.............................................................................................................................. 6

Spindle Speeds....................................................................................... 150, 240, 470, 720, 1130, 2100 RPM

Spindle Type............................................................................................................................................... D1-4

Tailstock Quill Travel............................................................................................................................. 3-1/8 in.

Tailstock Taper.......................................................................................................................................... MT#3

Number of Longitudinal Feeds....................................................................................................................... 15

Range of Longitudinal Feeds................................................................................................. 0.0016 – 0.015 in.

Number of Cross Feeds................................................................................................................................. 15

Range of Cross Feeds......................................................................................................... 0.0008 – 0.0061 in.

Number of Inch Threads................................................................................................................................. 21

Range of Inch Threads...................................................................................................................... 5 – 72 TPI

Number of Metric Threads.............................................................................................................................. 12

Range of Metric Threads.................................................................................................................. 0.5 – 4 mm

Mill Info

Mill Taper...................................................................................................................................................... R-8

Mill Spindle Travel................................................................................................................................. 7-1/8 in.

Mill Swing............................................................................................................................................ 14-1/2 in.

Distance Spindle To Work Table............................................................................................................... 10 in.

Distance Spindle To Bed........................................................................................................................... 12 in.

Distance Spindle To Center Line........................................................................................................... 6-1/2 in.

Mill Head Vertical Travel...................................................................................................................... 7-1/16 in.

Maximum Tool Bit Size............................................................................................................................. 5/8 in.

Drilling Capacity For Steel........................................................................................................................ 1/2 in.

Drilling Capacity For Cast Iron.................................................................................................................. 1/2 in.

Table Size Length.................................................................................................................................. 9-1/2 in.

Table Size Width................................................................................................................................... 4-1/2 in.

Table Size Thickness............................................................................................................................ 1-3/8 in.

Drawbar Diameter................................................................................................................................... 7/16 in.

Drawbar TPI............................................................................................................................................. 20 TPI

Drawbar Length..................................................................................................................................... 6-3/4 in.

Number of Mill Drill Speeds................................................................................................................... Variable

Mill Speed Range.................................................................................................................... 100 – 2500 RPM

Construction

Bed...................................................................................................................... Induction-Hardened Cast Iron

Headstock............................................................................................................................................ Cast Iron

Body..................................................................................................................................................... Cast Iron

End Gears.................................................................................................................................................. Steel

Paint Type/Finish...................................................................................................................................... Epoxy

Other

Bed Width.............................................................................................................................................. 6-1/8 in.

Carriage Leadscrew Diameter.................................................................................................................. 3/4 in.

Carriage Leadscrew TPI............................................................................................................................ 8 TPI

Carriage Leadscrew Length.............................................................................................................. 42-1/16 in.

Cross Slide Leadscrew Diameter........................................................................................................... 9/16 in.

Cross Slide Leadscrew TPI...................................................................................................................... 14 TPI

-8-

Model G0773 (Mfd. Since 12/14)

Other Specifications:

Country of Origin ................................................................................................................................................ China

Warranty ........................................................................................................................................................... 1 Year

Approximate Assembly & Setup Time .............................................................................................................. 1 Hour

Serial Number Location .................................................................................................................................. ID Label

Features:

Full-length splash guard
Emergency stop on lathe and mill
Headstock and mill eyeshields
Thread dial indicator
T-slots in cross slide
Handwheel dials graduated in inches
Electronic variable-speed control on mill
Fine and coarse mill spindle downfeed with adjustable depth stop
Column tilts 45 degrees left and right
Chuck guard with safety switch on lathe and mill

Accessories Included:

6" 3-jaw scroll chuck
4-way turret tool post
MT#3 and MT#5 dead centers
Bottle for oil

Accessories Recommended:

T10255 Mini Lathe Tool Kit
T25250 58 pc Clamping Kit 5/16"-18, 3/8" T-Slot
G1070 Live Center Set - Taper: MT3
H7661 Quick Vise
T10253 2" Mini Self Centering Vise with Swivel Base
T10254 2" Mini Self Centering Vise
H5931 4 pc. Center Drill Set 82°
H5930 4 pc. Center Drill Set 60°
T23962 Moly-D Machine and Way Oil - ISO 68, 5 Gallon
T23963 Moly-D Multi-Function Machine Oil-ISO 32, 5 Gallon
SB1365 Way Oil for Lathes
T23964 Armor Plate with Moly-D Multi-purpose Grease, 14.5 oz.
H7616 High Pressure Oil Can, 5 Oz. With Plastic Nozzle

Model G0773 (Mfd. Since 12/14)

-9-

SECTION 1: SAFETY

For Your Own Safety, Read Instruction

Manual Before Operating This Machine

The purpose of safety symbols is to attract your attention to possible hazardous conditions.
This manual uses a series of symbols and signal words intended to convey the level of impor­tance of the safety messages. The progression of symbols is described below. Remember that
safety messages by themselves do not eliminate danger and are not a substitute for proper
accident prevention measures. Always use common sense and good judgment.

Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided,
MAY result in minor or moderate injury. It may also be used to alert
against unsafe practices.

This symbol is used to alert the user to useful information about

NOTICE

proper operation of the machine.

Safety Instructions for Machinery

OWNER’S MANUAL. Read and understand this

owner’s manual BEFORE using machine.

TRAINED OPERATORS ONLY. Untrained oper­ators have a higher risk of being hurt or killed.
Only allow trained/supervised people to use this
machine. When machine is not being used, dis­connect power, remove switch keys, or lock-out
machine to prevent unauthorized use—especially
around children. Make workshop kid proof!

DANGEROUS ENVIRONMENTS. Do not use
machinery in areas that are wet, cluttered, or have
poor lighting. Operating machinery in these areas
greatly increases the risk of accidents and injury.

MENTAL ALERTNESS REQUIRED. Full mental
alertness is required for safe operation of machin­ery. Never operate under the influence of drugs or
alcohol, when tired, or when distracted.

ELECTRICAL EQUIPMENT INJURY RISKS. You
can be shocked, burned, or killed by touching live
electrical components or improperly grounded
machinery. To reduce this risk, only allow qualified
service personnel to do electrical installation or
repair work, and always disconnect power before
accessing or exposing electrical equipment.

DISCONNECT POWER FIRST.
nect machine from power supply BEFORE making
adjustments, changing tooling, or servicing machine.
This prevents an injury risk from unintended startup
or contact with live electrical components.

EYE PROTECTION. Always wear ANSI-approved
safety glasses or a face shield when operating or
observing machinery to reduce the risk of eye
injury or blindness from flying particles. Everyday
eyeglasses are NOT approved safety glasses.

Always discon-

-10 -

Model G0773 (Mfd. Since 12/14)

WEARING PROPER APPAREL. Do not wear
clothing, apparel or jewelry that can become
entangled in moving parts. Always tie back or
cover long hair. Wear non-slip footwear to avoid
accidental slips, which could cause loss of work­piece control.

HAZARDOUS DUST. Dust created while using
machinery may cause cancer, birth defects, or
long-term respiratory damage. Be aware of dust
hazards associated with each workpiece material,
and always wear a NIOSH-approved respirator to
reduce your risk.

HEARING PROTECTION. Always wear hear­ing protection when operating or observing loud
machinery. Extended exposure to this noise
without hearing protection can cause permanent
hearing loss.

REMOVE ADJUSTING TOOLS. Tools left on
machinery can become dangerous projectiles
upon startup. Never leave chuck keys, wrenches,
or any other tools on machine. Always verify
removal before starting!

USE CORRECT TOOL FOR THE JOB. Only use
this tool for its intended purpose—do not force
it or an attachment to do a job for which it was
not designed. Never make unapproved modifica­tions—modifying tool or using it differently than
intended may result in malfunction or mechanical
failure that can lead to personal injury or death!

AWKWARD POSITIONS. Keep proper footing
and balance at all times when operating machine.
Do not overreach! Avoid awkward hand positions
that make workpiece control difficult or increase
the risk of accidental injury.

CHILDREN & BYSTANDERS. Keep children and
bystanders at a safe distance from the work area.
Stop using machine if they become a distraction.

FORCING MACHINERY. Do not force machine.
It will do the job safer and better at the rate for
which it was designed.

NEVER STAND ON MACHINE. Serious injury
may occur if machine is tipped or if the cutting
tool is unintentionally contacted.

STABLE MACHINE. Unexpected movement dur­ing operation greatly increases risk of injury or
loss of control. Before starting, verify machine is
stable and mobile base (if used) is locked.

USE RECOMMENDED ACCESSORIES. Consult
this owner’s manual or the manufacturer for rec­ommended accessories. Using improper acces­sories will increase the risk of serious injury.

UNATTENDED OPERATION. To reduce the
risk of accidental injury, turn machine OFF and
ensure all moving parts completely stop before
walking away. Never leave machine running
while unattended.

MAINTAIN WITH CARE. Follow all maintenance
instructions and lubrication schedules to keep
machine in good working condition. A machine
that is improperly maintained could malfunction,
leading to serious personal injury or death.

CHECK DAMAGED PARTS. Regularly inspect
machine for any condition that may affect safe
operation. Immediately repair or replace damaged
or mis-adjusted parts before operating machine.

MAINTAIN POWER CORDS. When disconnect­ing cord-connected machines from power, grab
and pull the plug—NOT the cord. Pulling the cord
may damage the wires inside. Do not handle
cord/plug with wet hands. Avoid cord damage by
keeping it away from heated surfaces, high traffic
areas, harsh chemicals, and wet/damp locations.

GUARDS & COVERS. Guards and covers reduce
accidental contact with moving parts or flying
debris. Make sure they are properly installed,
undamaged, and working correctly.

Model G0773 (Mfd. Since 12/14)

EXPERIENCING DIFFICULTIES. If at any time
you experience difficulties performing the intend­ed operation, stop using the machine! Contact our
Technical Support at [phone].

-11-

Additional Safety for Metal Lathes

Serious injury or death can occur from getting entangled in, crushed between, or struck by
rotating parts on a lathe! Unsecured tools or workpieces that fly loose from rotating objects
can also strike nearby operators with deadly force. To minimize the risk of getting hurt or killed,
anyone operating this machine MUST completely heed the hazards and warnings below.

CLOTHING, JEWELRY & LONG HAIR. Tie back

long hair, remove jewelry, and do not wear loose
clothing or gloves. These can easily get caught on
rotating parts and pull you into lathe.

ROTATIN G PARTS. Always keep hands and body
at a safe distance from rotating parts—especially
those with projecting surfaces. Never hold any­thing against rotating workpiece, such as emery
cloth, that can pull you into lathe.

GUARDING. Guards and covers protect against
entanglement or flying objects. Always ensure they
are properly installed while machine is running.

ADJUSTMENT TOOLS. Remove all chuck keys,
wrenches, and adjustment tools before turning
lathe ON. A tool left on the lathe can become a
deadly projectile when spindle is started.

SAFE CLEARANCES. Before starting spindle,
verify workpiece has adequate clearance by hand­rotating it through its entire range of motion.

NEW SETUPS. Test each new setup by starting
spindle rotation at the lowest speed and standing
to the side of the lathe until workpiece reaches full
speed and you can verify safe rotation.

SPINDLE SPEEDS. Using spindle speeds that are
too fast for the workpiece or clamping equipment
can cause rotating parts to come loose and strike
nearby people with deadly force. Always use slow
spindle speeds with large or non-concentric work­pieces. Never exceed rated RPM of the chuck.

LONG STOCK SAFETY. Long stock can whip
violently if not properly supported. Always support
any stock that extends from the chuck/headstock
more than three times its own diameter.

CLEARING CHIPS. Metal chips can be razor
sharp. Avoid clearing them by hand or with a rag.
Use a brush or vacuum instead.

SECURE WORKPIECE. An improperly secured
workpiece can fly off spindle with deadly force.
Make sure workpiece is properly secured before
starting the lathe.

CHUCKS. Chucks can be heavy and difficult to
hold. During installation and removal, protect your
hands and precision bed ways by using a chuck
cradle or piece of plywood over the bed ways. Use
lifting equipment, as necessary, for large chucks.

STOPPING SPINDLE. Always allow spindle to
completely stop on its own, or use a brake, if
provided. Never put hands or another object on a
spinning workpiece to make it stop faster.

CRASHING. A serious explosion of metal parts
can occur if cutting tool or other lathe component
hits rotating chuck or a projecting part of work­piece. Resulting metal fragments can strike nearby
people and lathe will be seriously damaged. To
reduce risk of crashing, ALWAYS release automat­ic feeds after use, NEVER leave lathe unattended,
and CHECK all clearances before starting lathe.

COOLANT SAFETY. Coolant can become very
toxic through prolonged use and aging. To mini­mize toxicity, change coolant regularly. When
using, position nozzle properly to avoid splashing
operator or causing a slipping hazard on floor.

TOOL SELECTION. Cutting with incorrect or dull
tooling increases risk of injury from broken or dis­lodged components, or as a result of extra force
required for operation. Always use sharp tooling
that is right for the job.

SANDING/POLISHING. To reduce risk of entan­glement, never wrap emery cloth around rotating
workpiece. Instead, use emery cloth with the aid
of a tool or backing board.

MEASURING WORKPIECE. To reduce risk of
entanglement, never measure rotating workpieces.

-12-

Model G0773 (Mfd. Since 12/14)

Additional Safety for Mills

The primary risks of operating a Mill are as follows: You can be seriously injured or killed by
getting clothing, jewelry, or long hair entangled with rotating cutter. You can be severely cut
or have fingers amputated from contact with the rotating cutter. You can be blinded or struck
by broken cutting tools, metal chips, workpieces, or adjustment tools thrown from the rotating
spindle with great force. To reduce your risk of serious injury when operating this machine,
completely heed and understand the following:

UNDERSTAND ALL CONTROLS. Make sure you

understand the function and proper use of all con­trols before starting. This will help you avoid mak­ing mistakes that result in serious injury.

WEAR FACE SHIELD. Always wear a face shield
in addition to safety glasses. This provides more
complete protection for your face than safety
glasses alone.

REMOVE CHUCK KEY & SPINDLE TOOLS.
Always remove chuck key, drawbar wrench, and
other tools used on the spindle immediately after
use. This will prevent them from being thrown by
the spindle upon startup.

PROPERLY SECURE CUTTER. Firmly secure
cutting tool or drill bit so it does not fly out of spin­dle during operation.

USE CORRECT SPINDLE SPEED. Follow rec­ommended speeds and feeds for each size and
type of cutting tool. This helps avoid tool breakage
during operation and ensures best cutting results.

INSPECT CUTTING TOOL. Inspect cutting tools
for sharpness, chips, or cracks before each use.
Replace dull, chipped, or cracked cutting tools
immediately.

ALLOW SPINDLE TO STOP. To minimize your
risk of entanglement, always allow spindle to stop
on its own. DO NOT stop spindle using your hand
or any other object.

SECURE WORKPIECE TO TABLE. Clamp
workpiece to table or secure in a vise mounted to
table, so workpiece cannot unexpectedly shift or
spin during operation. NEVER hold workpiece by
hand during operation.

CLEAN MACHINE SAFELY. Metal chips or shav­ings can be razor sharp. DO NOT clear chips
by hand or compressed air that can force chips
farther into machine—use a brush or vacuum
instead. Never clear chips while spindle is turning.

PROPERLY MAINTAIN MACHINE. Keep machine
in proper working condition to help ensure that it
functions safely and all guards and other compo­nents work as intended. Perform routine inspec­tions and all necessary maintenance. Never oper­ate machine with damaged or worn parts that can
break or result in unexpected movement during
operation.

DISCONNECT POWER FIRST. To reduce risk of
electrocution or injury from unexpected startup,
make sure mill/drill is turned OFF, disconnected
from power, and all moving parts have come to
a complete stop before changing cutting tools or
starting any inspection, adjustment, or mainte­nance procedure.

POWER DISRUPTION. In the event of a local
power outage during operation, turn spindle switch
OFF to avoid a possible sudden startup once
power is restored.

Model G0773 (Mfd. Since 12/14)

-13-

Additional Lathe Chuck Safety

ENTANGLEMENT. Entanglement with a rotat-

ing chuck can lead to death, amputation, broken
bones, or other serious injury. Never attempt to
slow or stop the lathe chuck by hand, and always
roll up long sleeves, tie back long hair, and remove
any jewelry or loose apparel BEFORE operating.

CHUCK SPEED RATING. Excessive spindle
speeds greatly increase the risk of the workpiece
or chuck being thrown from the machine with
deadly force. Never use spindle speeds faster than
the chuck RPM rating or the safe limits of your
workpiece.

USING CORRECT EQUIPMENT. Many workpiec­es can only be safely turned in a lathe if additional
support equipment, such as a tailstock or steady/
follow rest, is used. If the operation is too hazard­ous to be completed with the lathe or existing
equipment, the operator must have enough experi­ence to know when to use a different machine or
find a safer way.

TRAINED OPERATORS ONLY. Using a chuck
incorrectly can result in workpieces coming loose
at high speeds and striking the operator or bystand­ers with deadly force. To reduce the risk of this haz­ard, read and understand this document and seek
additional training from an experienced chuck user
before using a chuck.

CHUCK CAPACITY. Avoid exceeding the capacity
of the chuck by clamping an oversized workpiece.
If the workpiece is too large to safely clamp with
the chuck, use a faceplate or a larger chuck if pos­sible. Otherwise, the workpiece could be thrown
from the lathe during operation, resulting in serious
impact injury or death.

CLAMPING FORCE. Inadequate clamping force
can lead to the workpiece being thrown from the
chuck and striking the operator or bystanders.
Maximum clamping force is achieved when the
chuck is properly maintained and lubricated, all
jaws are fully engaged with the workpiece, and
the maximum chuck clamping diameter is not
exceeded.

PROPER MAINTENANCE. All chucks must be
properly maintained and lubricated to achieve
maximum clamping force and withstand the rigors
of centrifugal force. To reduce the risk of a thrown
workpiece, follow all maintenance intervals and
instructions in this document.

DISCONNECT POWER. Serious entanglement or
impact injuries could occur if the lathe is started
while you are adjusting, servicing, or installing the
chuck. Always disconnect the lathe from power
before performing these procedures.

-14-

Model G0773 (Mfd. Since 12/14)

SECTION 2: POWER SUPPLY

Before installing the machine, consider the avail­ability and proximity of the required power supply
circuit. If an existing circuit does not meet the
requirements for this machine, a new circuit must
be installed. To minimize the risk of electrocution,
fire, or equipment damage, installation work and
electrical wiring must be done by an electrician or
qualified service personnel in accordance with all
applicable codes and standards.

Electrocution, fire, or
equipment damage may
occur if machine is not
correctly grounded and
connected to the power

The full-load current rating is the amperage a
machine draws at 100% of the rated output power.
On machines with multiple motors, this is the
amperage drawn by the largest motor or sum of all
motors and electrical devices that might operate
at one time during normal operations.

The full-load current is not the maximum amount
of amps that the machine will draw. If the machine
is overloaded, it will draw additional amps beyond
the full-load rating.

If the machine is overloaded for a sufficient length
of time, damage, overheating, or fire may result—
especially if connected to an undersized circuit.
To reduce the risk of these hazards, avoid over­loading the machine during operation and make
sure it is connected to a power supply circuit that
meets the specified circuit requirements.

For your own safety and protection of

Note: Circuit requirements in this manual apply to

a dedicated circuit—where only one machine will
be running on the circuit at a time. If machine will
be connected to a shared circuit where multiple
machines may be running at the same time, con­sult an electrician or qualified service personnel to
ensure circuit is properly sized for safe operation.

A power supply circuit includes all electrical
equipment between the breaker box or fuse panel
in the building and the machine. The power sup­ply circuit used for this machine must be sized to
safely handle the full-load current drawn from the
machine for an extended period of time. (If this
machine is connected to a circuit protected by
fuses, use a time delay fuse marked D.)

This machine is prewired to operate on a power
supply circuit that has a verified ground and meets
the following requirements:

Availability

Serious injury could occur if you connect
the machine to power before completing the
setup process. DO NOT connect to power
until instructed later in this manual.

110V Circuit Requirements

Nominal Voltage .................... 110V, 115V, 120V

Cycle .......................................................... 60 Hz

Phase ........................................... Single-Phase

Power Supply Circuit ......................... 15 Amps

supply.

Full-Load Current Rating

Full-Load Rating ....................................... 11. 6A

Model G0773 (Mfd. Since 12/14)

property, consult an electrician if you are
unsure about wiring practices or electrical
codes in your area.

-15-

Improper connection of the equipment-grounding
wire can result in a risk of electric shock. The
wire with green insulation (with or without yellow
stripes) is the equipment-grounding wire. If repair
or replacement of the power cord or plug is nec­essary, do not connect the equipment-grounding
wire to a live (current carrying) terminal.

Check with a qualified electrician or service per­sonnel if you do not understand these grounding
requirements, or if you are in doubt about whether
the tool is properly grounded. If you ever notice
that a cord or plug is damaged or worn, discon­nect it from power, and immediately replace it with
a new one.

We do not recommend using an extension cord
with this machine.
cord, only use it if absolutely necessary and only
on a temporary basis.

Extension cords cause voltage drop, which can
damage electrical components and shorten motor
life. Voltage drop increases as the extension cord
size gets longer and the gauge size gets smaller
(higher gauge numbers indicate smaller sizes).

Any extension cord used with this machine must
be in good condition and contain a ground wire
and matching plug/receptacle. Additionally, it must
meet the following size requirements:

Grounding & Plug Requirements

it will not fit the outlet, have a qualified
electrician install the proper outlet with a

This machine MUST be grounded. In the event
of certain malfunctions or breakdowns, grounding
reduces the risk of electric shock by providing a
path of least resistance for electric current.

This machine is equipped with a power cord that
has an equipment-grounding wire and a grounding
plug. Only insert plug into a matching receptacle
(outlet) that is properly installed and grounded in
accordance with all local codes and ordinances.
DO NOT modify the provided plug!

GROUNDED

5-15 RECEPTACLE

Grounding Prong

5-15 PLUG

Extension Cords

If you must use an extension

Neutral Hot

Figure 6. Typical 5-15 plug and receptacle.

SHOCK HAZARD!
Two-prong outlets do not meet the grounding
requirements for this machine. Do not modify
or use an adapter on the plug provided—if

verified ground.

-16 -

Minimum Gauge Size ...........................14 AWG

Maximum Length (Shorter is Better).......50 ft.

Model G0773 (Mfd. Since 12/14)

SECTION 3: SETUP

Your machine was carefully packaged for safe
transportation. Remove the packaging materials
from around your machine and inspect it. If you
discover any damage, please call us immediately

at [phone]

Save the containers and all packing materials for
possible inspection by the carrier or its agent.

Otherwise, filing a freight claim can be difficult.

When you are completely satisfied with the condi­tion of your shipment, inventory the contents.

Keep children and pets away
from plastic bags or packing
materials shipped with this

Setup Overview

The list below outlines the basic process of setting
up the machine for first-time operation. Specific
steps are covered later in this section.

The typical setup process is as follows:

1. Unpack machine and inventory contents of

box/crate.

2. Clean machine and its components.

3. Move machine to an acceptable location,

level bedways, and secure in place.

4. Assemble machine and make sure it is ready
for operation.

5. Connect machine to power source.

6. Test run machine and various safety compo-

nents to ensure they function properly.

Unpacking

for advice.

SUFFOCATION HAZARD!

machine. Discard immediately.

7. Perform spindle break-in procedure to pre-

pare spindle bearings for operational loads.

Model G0773 (Mfd. Since 12/14)

Needed for Setup

The following are needed to complete the setup
process, but are not included with your machine.

Description

• Another Person for Moving Machine

• Safety Glasses

• Cleaner/Degreaser (Page 19)

• Quality Metal Protectant

• Disposable Shop Rags

• Forklift

• Lifting Slings (rated for at least 700 lbs.)

• Mounting Hardware (Page 22)

-17-

Inventory

The following is a list of items shipped with your
machine. Before beginning setup, lay these items
out and inventory them.

If any non-proprietary parts are missing (e.g. a
nut or a washer), we will gladly replace them; or
for the sake of expediency, replacements can be
obtained at your local hardware store.

Installed Components (Figure 7) Qty.

A. Lathe Chuck Guard .................................... 1

B. 3-Jaw Chuck .............................................. 1

C. 4-Way Tool Post ......................................... 1

D. Milling Headstock ....................................... 1

E. Mill Safety Shield ........................................ 1

F. Backsplash ................................................. 1

G. Ta ils toc k ...................................................... 1

H. Drill Chuck

A

1

⁄2 " ............................................ 1

B

D

Loose Components (Figure 8) Qty.
I. Open-End Wrench Set

(8/10, 12/14, 17/19, 36mm) ................... 1 Ea.

J. Dead Center MT#5 ..................................... 1

K. Dead Center MT#3 ..................................... 1

L. Lathe Chuck Key ........................................ 1

M. Square Socket T-Wrench ........................... 1

N. Spanner Wrench 63mm Pin-Type .............. 1

O. Spanner Wrench 45–52mm Hook-Type ..... 1

P. Hardware Bag ............................................ 1

—Cap Screw M10-1.5 x 35 ........................ 4

—Cap Screw M10-1.5 x 30 ........................ 3

—Cap Screw M8-1.25 x 25 ........................ 4

—Flat Washer 10mm ................................. 7

—Lock Washer 10mm ................................ 3

Q. Spindle Locking Pin .................................... 1

R. Handwheel Handle (Cross Slide) ............... 1

S. Handwheel Handle (Carriage) .................... 1

T. Timing Belt ................................................. 1

U. V-Belt .......................................................... 1

V. Mill Chuck Key

W. Hex Wrench Set (3, 4, 5, 6, 8mm) ........1 Ea.

X. Change Gear Set (35, 50, 60T) ............1 Ea.

Y. 3-Jaw Chuck External Jaw Set .................. 1

5

⁄16" AH 11T SD-5⁄8" ............ 1

C

E

H

Figure 7. Components installed when shipped.

G

F

I

V

U

U

S

Figure 8. Components loose when shipped.

W

ST

J

K

X

Y

R

Q

L

M

N

O

P

NOTICE

If you cannot find an item on this list, care­fully check around/inside the machine and
packaging materials. Often, these items get
lost in packaging materials while unpack­ing or they are pre-installed at the factory.

-18-

Model G0773 (Mfd. Since 12/14)

The unpainted surfaces of your machine are
coated with a heavy-duty rust preventative that
prevents corrosion during shipment and storage.
This rust preventative works extremely well, but it
will take a little time to clean.

Be patient and do a thorough job cleaning your
machine. The time you spend doing this now will
give you a better appreciation for the proper care
of your machine's unpainted surfaces.

There are many ways to remove this rust preven­tative, but the following steps work well in a wide
variety of situations. Always follow the manufac­turer’s instructions with any cleaning product you
use and make sure you work in a well-ventilated
area to minimize exposure to toxic fumes.

Before cleaning, gather the following:

• Disposable rags

• Cleaner/degreaser (WD•40 works well)

• Safety glasses & disposable gloves

• Plastic paint scraper (optional)

Basic steps for removing rust preventative:

1.

2.

3.

4.

metal protectant to prevent rust.

Many cleaning solvents

work in a well-ventilated

Avoid chlorine-based solvents, such as

Cleanup

Gasoline and petroleum
products have low flash
points and can explode
or cause fire if used to
clean machinery. Av oi d
using these products
to clean machinery.

are toxic if inhaled. Only

Put on safety glasses.

Coat the rust preventative with a liberal

amount of cleaner/degreaser, then let it soak
for 5–10 minutes.

Wipe off the surfaces. If your cleaner/degreas-

er is effective, the rust preventative will wipe
off easily. If you have a plastic paint scraper,
scrape off as much as you can first, then wipe
off the rest with the rag.

area.

NOTICE

acetone or brake parts cleaner, that may
damage painted surfaces.

T23692—Orange Power Degreaser

A great product for removing the waxy shipping
grease from your machine during clean up.

Figure 9. T23692 Orange Power Degreaser.

Repeat Steps 2–3 as necessary until clean,

then coat all unpainted surfaces with a quality

Model G0773 (Mfd. Since 12/14)

-19 -

Site Considerations

Weight Load

Refer to the
of your machine. Make sure that the surface upon
which the machine is placed will bear the weight
of the machine, additional equipment that may be
installed on the machine, and the heaviest work­piece that will be used. Additionally, consider the
weight of the operator and any dynamic loading
that may occur when operating the machine.

Space Allocation

Consider the largest size of workpiece that will
be processed through this machine and provide
enough space around the machine for adequate
operator material handling or the installation of
auxiliary equipment. With permanent installations,
leave enough space around the machine to open
or remove doors/covers as required by the main­tenance and service described in this manual.

See below for required space allocation.

Physical Environment

Extreme conditions for this type of machinery are

Place this machine near an existing power source.

other hazards. Make sure to leave enough space

Shadows, glare, or strobe effects that may distract
or impede the operator must be eliminated.

Machine Data Sheet for the weight

Children or untrained people
may be seriously injured by
this machine. Only install in an
access restricted location.

Min. 30" For
Maintenance

Keep

Workpiece

Loading

Area

Unobstructed

Figure 10. Minimum working clearances.

The physical environment where the machine is
operated is important for safe operation and lon­gevity of machine components. For best results,
operate this machine in a dry environment that is
free from excessive moisture, hazardous chemi­cals, airborne abrasives, or extreme conditions.

generally those where the ambient temperature
range exceeds 41°–104°F; the relative humidity
range exceeds 20%–95% (non-condensing); or
the environment is subject to vibration, shocks,
or bumps.

Electrical Installation

Make sure all power cords are protected from
traffic, material handling, moisture, chemicals, or

around machine to disconnect power supply or
apply a lockout/tagout device, if required.

Lighting

Lighting around the machine must be adequate
enough that operations can be performed safely.

Wall

59"

30"

-20-

Model G0773 (Mfd. Since 12/14)

Lifting & Placing

get help from other people

HEAVY LIF T!
Straining or crushing injury
may occur from improperly
lifting machine or some of
its parts. To reduce this risk,

and use a forklift (or other
lifting equipment) rated for
weight of this machine.

Do not attempt to lift or move the machine with­out using the proper lifting equipment (such as
a forklift or crane) or the necessary assistance
from other people. Refer to Needed for Setup on

Page 17 for details.

4. To balance load for lifting, move tailstock and

carriage to right end of bedway, then lock
them in place.

Note: Before trying to move carriage, make

sure carriage lock is loose and half nut is
disengaged.

5. Wrap lifting slings around bed and between
leadscrew and bedway, as shown in Figure
11, to help prevent bending leadscrew during
lifting.

Lifting

Sling

To lift and place machine:

1. Remove shipping crate top and sides, then

remove chip pan, 4-jaw chuck, faceplate, and
toolbox from shipping pallet.

2. Position chip pan on workbench or other
selected mounting surface to use it for mark­ing hole locations for mounting hardware
(refer to Mounting on Page 22).

3. Unbolt machine from shipping pallet.

Only use lifting slings and power lifting
equipment rated for at least 300 lbs. and in
good working condition. If machine falls or
tips over while moving it, serious personal
injury and property damage could result.

Figure 11. Example of lifting slings positioned

correctly on a similar machine.

6. Attach lifting slings to forklift forks (or other
power lifting equipment).

To balance load when lifting, lifting strap
closest to headstock must be slightly short­er than lifting strap on tailstock side. If you
are using lifting straps of equal length, this
can be achieved by wrapping lifting strap on
headstock side one or more times around
forklift fork, or by placing a block of wood
on fork to raise ends of lifting strap.

Model G0773 (Mfd. Since 12/14)

7. Have an assistant hold mill headstock to
steady load, then lift machine just enough to
clear any obstacles and move it to the work­bench or other selected mounting location.

8. Properly secure machine in place as instruct­ed in Mounting subsection on Page 22.

-21-

Mounting & Leveling

Number of Mounting Holes ............................ 4

Diameter of Mounting Hardware .................

1

⁄2"

For accurate turning results and to prevent
warping the cast iron bed and ways, the
lathe bedways MUST be leveled from side­to-side and from front-to-back on both ends.

Follow these guidelines when mounting your
machine to ensure safe and accurate cutting
results:

• Make sure stand or workbench can ade­quately support weight of machine and mate­rials, and that it will not move or vibrate dur­ing operation.

• Use a silicon sealant between the machine
base and chip pan to prevent coolant or other
fluids from leaking through onto the stand,
workbench, or floor.

—If mounting machine to a stand (not includ-

ed), follow the instructions included with it.
Ensure stand is anchored to floor.

— If mounting machine to a workbench, drill

holes all the way through workbench, and
use hex bolts, washers, and hex nuts to
secure machine in place (see example
below).

Recheck the bedways 24 hours after
installation, two weeks after that, and then
annually to make sure they remain level.

Leveling machinery helps precision components,
such as bedways, remain straight and flat dur­ing the lifespan of the machine. The bed on a
lathe that is not level may slowly twist due to the
dynamic loads placed on the machine during
operation.

For best results, use a precision level that is at
least 12" long and sensitive enough to show a
distinct movement when a 0.003" shim (approxi­mately the thickness of one sheet of standard
newspaper) is placed under one end of the level.

See Figure 13 for an example of a high-precision
level.

Hex Nut

Lock Washer

Flat Washer

Lathe

Silicon

Chip Pan

Workbench

Flat Washer

Hex Bolt

Figure 12. Example of a "Through Mount" setup.

Figure 13. Grizzly Model H2683 12" Master

Machinist's Level.

-22-

Model G0773 (Mfd. Since 12/14)

Assembly

3. Place timing belt behind motor pulley

and around motor timing-belt pulley (see
Figure 15).

With the exception of the handwheel handles and
belts, the Model G0773 is shipped fully assem­bled.

To assemble machine:

1. Use a flat head screwdriver to attach

handwheel handles shown in Figure 14.

Cross Slide

Handle

Carriage

Handle

Figure 14. Handwheel handles installed.

4. Install free end of timing belt on timing-belt

pulley (see Figure 15), making sure teeth of
belt mesh with notches in pulley.

5. Pull timing-belt up, creating tension in timing
belt, then tighten (2) hex nuts from Step 1.

6. Loosen M8-1.25 x 25 hex bolt that secures ten­sioner to timing gear bracket (see Figure 16).

Spindle Pulley

V-Belt

Tensioner

Idler

Pulley

2. Loosen (2) M12-1.75 hex nuts that secure
timing-belt pulley to idler bracket (see Figure

15), allowing timing-belt pulley to slide in its
mounting slot.

Idler

x2

Timing

Belt

Figure 15. Timing belt installation components.

Bracket

Timing-Belt

Pulley

Motor

Timing-Belt

Pulley

Motor Pulleys

Figure 16. V-belt controls and components.

7. Install V-belt onto largest spindle pulley

groove and smallest idler pulley groove, as
shown in Figure 16.

8. Pivot tensioner against V-belt to create ten­sion (see Figure 16) and re-tighten hex bolt
from Step 1.

Note: The V-belt/pulley configuration of

Model G0773 varies depending on spindle
speed. The steps above illustrate V-belt
installation for 150 RPM, which is the starting
speed in the Lathe Spindle Break-In proce­dure on Page 26. For more detailed instruc­tions on selecting proper configurations for
specific spindle speeds, see Setting Spindle
Speed on Page 41.

Model G0773 (Mfd. Since 12/14)

-23-

Test Run

Once assembly is complete, test run the machine
to ensure it is properly connected to power and
safety components are functioning properly.

If you find an unusual problem during the test run,
immediately stop the machine, disconnect it from
power, and fix the problem BEFORE operating the
machine again. The

table in the

SERVICE section of this manual can help.

setup instructions have been performed.
Operating an improperly set up machine

Serious injury or death can result from

3. Set spindle direction switch to OFF position.

4. Set lathe/mill selector switch to "1".

5. Make sure chuck and jaws, if installed, are

secure (see Chuck Installation on Page 28).

Note: If a chuck is not installed on the lathe,

you do not need to install one for this test run.

Troubleshooting

using this machine BEFORE understanding
its controls and related safety information.
DO NOT operate, or allow others to operate,
machine until the information is understood.

DO NOT start machine until all preceding

may result in malfunction or unexpect­ed results that can lead to serious injury,
death, or machine/property damage.

To test run machine:

1. Make sure all tools and objects used during

setup are cleared away from machine.

2. Press Emergency Stop button cover (see
Figure 17) to prevent unexpected start up.

6. Disengage half nut with lever by positioning

lever as shown in Figure 18.

Half Nut

Lever

Engaged Disengaged

Figure 18. Half nut lever positioned to disengage

half nut.

7. Connect machine to power. Lathe power light
(Figure 17) should illuminate if machine is
correctly connected to power supply and all
electrical controls are positioned correctly for
startup.

Spindle Direction

Switch

Lathe Power Light

Emergency

Stop Button

-24-

Cover

Lathe/Mill

Selector Switch

Figure 17. Headstock controls.

Model G0773 (Mfd. Since 12/14)

8. Press tab on side of Emergency Stop button
to open switch cover (see Figure 19), and
reset switch by pressing green ON button (be
sure to leave switch cover open; otherwise,
closing it will prevent operation).

Spindle

Direction Switch

Switch Cover

12. Turn variable-speed dial (Figure 20) com­pletely counterclockwise to lowest possible
setting.

Variable-

Speed Dial

Emergency

Stop Button

OFF Button

Figure 19. Emergency Stop button lathe.

9. Turn spindle direction switch shown in Figure
19 to "FOR" (forward) position. The spindle

should rotate counterclockwise—down and
toward front of lathe.

The machine should run smoothly with little to

no vibration or rubbing noises.

— Strange or unusual noises should be

investigated and corrected before operat­ing machine further. Always disconnect
machine from power when investigating or
correcting potential problems.

10. Press Emergency Stop button to turn lathe
OFF and stop spindle rotation. Then, with­out resetting Emergency Stop button, try to
restart spindle rotation by rotating spindle
direction switch all the way clockwise and
then counterclockwise. The spindle should
not start if the Emergency Stop button is
working correctly.

—If spindle does start with Emergency Stop

button pressed in, the button is not operat­ing correctly. To reduce the risk of injury,
this safety feature must operate prop­erly before further using the machine. Turn
spindle direction switch OFF to stop lathe,
disconnect lathe from power, and call Tech
Support for help.

ON Button

Figure 20. Location of mill head Emergency

Stop button and variable-speed dial.

13. Open Emergency Stop button switch cover
(Figure 20) and reset switch in the same
manner as you did in Step 8. The mill power
light should illuminate if machine is correctly
connected to power supply and all electrical
controls are positioned correctly for startup.

14. Turn mill ON by rotating variable-speed dial
clockwise, then rotate dial all the way clock­wise to achieve maximum spindle speed.

15. Press Emergency Stop button to turn mill
OFF. Then, without resetting Emergency
Stop button, try to restart spindle rotation by
rotating variable-speed dial all the way coun­terclockwise and then clockwise. The spindle
should not start.

—If spindle does start with Emergency Stop

button pressed in, the button is not oper­ating correctly. This safety feature must
operate properly before further using the
machine. Turn spindle direction switch
OFF to stop mill, disconnect machine from
power, and call Tech Support for help.

Congratulations! The Test Run is complete!

Now perform the Spindle Break-In proce­dure beginning on Page 26.

11. Set lathe/mill selector switch to "2" for mill
mode (see Figure 17 on Page 24).

Model G0773 (Mfd. Since 12/14)

-25-

Spindle Break-In

The spindle break-in procedure distributes lubri­cation

reduce the risk

of early

if there are any "dry" spots
or areas where lubrication has settled in the bear­ings. You

efore

placing

for the
first time when the machine is new or if it has
been sitting idle for longer than 6 months.

Always start the spindle break-in at the lowest
speed to minimize wear if there
Allow the spindle to run long enough to warm up
and distribute the bearing grease, then incremen­tally increase spindle speeds, allowing the spindle
to run the same amount of time at each speed, until
reaching the maximum spindle speed. Following
the break-in procedure in this progressive man­ner helps minimize any potential wear that could
occur until lubrication is fully distributed.

tain the warranty. Failure to do this could

throughout the bearings to

bearing failure

must complete this procedure b

operational loads on the spindle

are dry spots.

4. DISCONNECT MACHINE FROM POWER!

5. Set spindle speed to 1130 RPM and repeat

the same process of running spindle for 5
minutes in each direction.

Note: If necessary, refer to Setting Spindle

Speed on Page 41 for detailed instructions.

6. Set spindle speed to 2100 RPM and repeat
the process once again.

Congratulations! The lathe spindle break-in is

complete.

Mill Spindle Break-In

1. Successfully complete Lathe Spindle
Break-In.

2. Run mill spindle at lowest speed (100 RPM)

for a minimum of 10 minutes.

You must complete this procedure to main-

cause rapid wear-and-tear of spindle bear­ings once they are placed under load.

Lathe Spindle Break-In

1. Successfully complete Test Run procedure
beginning on Page 24.

2. Run lathe spindle at 150 RPM for minimum

of 5 minutes in the forward ("FOR") direction,
and then another 5 minutes in the reverse
("REV") direction.

Note: During Installing V-Belt in the

Assembly section on Page 23, spindle speed

was set at 150 RPM.

3. Press Emergency Stop Button to turn lathe

OFF.

-26-

3. Run mill spindle at highest speed (2500
RPM) for 10 minutes.

4. Rotate spindle speed dial all the way counter­clockwise to "0", then press Emergency Stop
button.

Congratulations! The mill spindle break-in is

complete.

Recommended

Adjustments

The following adjustments have been made at the
factory. However, because of the many variables
involved with shipping, we recommend you verify
these adjustments to ensure the best results:

Factory adjustments that should be verified:

• Tailstock alignment ........................ Page 34

• Cross slide backlash adjustment .....Page 71

• Leadscrew backlash ........................Page 71

• Gib adjustments ..............................Page 72

Model G0773 (Mfd. Since 12/14)

SECTION 4: LATHE OPERATIONS

The purpose of this overview is to provide the nov­ice machine operator with a basic understanding
of how the machine is used during operation, so
the

discussed later

in this manual

Due to the generic nature of this overview, it is
not intended to be an instructional guide. To learn
more about specific operations, read this entire
manual and
rienced
research outside of this manual by reading "how­to" books, trade magazines, or websites.

To reduce your risk of
serious injury, read this
entire manual BEFORE

To complete a typical lathe operation, the

Operation Overview

machine controls/components

are easier to understand.

operator does the following:

1. Securely mounts workpiece in lathe.

2. Puts on safety glasses and a face shield, rolls

up sleeves, removes jewelry, and secures
any clothing, jewelry, or hair that could get
entangled in moving parts.

3. Installs tooling on toolpost, then backs it
away to establish a safe startup clearance.

seek additional training from expe-

machine operators, and do additional

using machine.

To reduce risk of eye or face injury from
flying chips, always wear approved safety
glasses and face shield when operating this
machine.

4. Removes all setup tools from lathe.

5. Checks for safe clearances by rotating

workpiece by hand at least one full revolution.

6. Moves slides to where they will be used dur­ing operation.

7. If using power feed, selects appropriate feed
rate and direction.

8. Sets spindle speed according to workpiece
size and material.

9. Starts spindle rotation and uses carriage
handwheels or power feed options to move
tooling into workpiece for operations.

10. When finished turning, rotates spindle direc­tion switch to OFF, presses Emergency Stop
button, then removes workpiece.

If you are not experienced with this type
of machine, WE STRONGLY RECOMMEND
that you seek additional training outside of
this manual. Read books/magazines or get
formal training before beginning any proj­ects. Regardless of the content in this sec­tion, Grizzly Industrial will not be held liable
for accidents caused by lack of training.

Model G0773 (Mfd. Since 12/14)

-27-

Chuck Mounting

This lathe ships with the 3-jaw chuck installed.
This is a scroll-type chuck where all three jaws
move in unison when the chuck key is used.

risk of workpiece or chuck being thrown

This lathe is equipped with a D1-type spindle
nose. This type of spindle uses camlocks that are
adjusted with a chuck key to securely mount a
chuck or faceplate with repeatable precision and
ease.

To ensure accurate work, it is extremely important
to make sure the spindle nose and chuck mating
surfaces/tapers are clean. Even a small amount of
lint or debris can affect accuracy.

The chuck is properly installed when all camlocks
are tight, the spindle and chuck tapers firmly
lock together, and the back of the chuck is firmly
seated against the face of the spindle all the way
around—without any gaps.

To install chuck:

1.

2.

section on

3.

4.

Avoid inserting the studs by piv­oting them in from an angle or rotating the
spindle. This can damage studs or spindle
cam holes.

Never use spindle speeds faster than chuck
RPM rating or safe limits of your workpiece.
Excessive spindle speeds greatly increase

Chuck Installation

from machine with deadly force!

Removal Device

Place a piece of plywood over the bedways to pro­tect them from damage if a chuck or other tooling
is dropped (see below).

Plywood Protection
Plate for Chucks
Installed by Hand

Figure 21. Example of common device used

during chuck installation and removal.

Installation &

DISCONNECT LATHE FROM POWER!

Use appropriate lifting, support, or protec-

tive device to protect ways and support
chuck during installation process (refer to

Installation & Removal Devices

previous page).

Clean and lightly oil camlock studs, then thor-

oughly clean mating surfaces of spindle and
chuck.

Install chuck by inserting camlock studs

straight into spindle cam holes.

Important:

INCORRECTCORRECT

-28-

Figure 22. Inserting camlock studs into spindle

cam holes.

Model G0773 (Mfd. Since 12/14)

— If cam line is NOT between "V" marks when

chuck.

Lightly stamp registration marks across the mating
seams of chuck components
help you re-install the chuck in the same position
after removal, which ensures consistent chuck
balance and turning results, and allows the
same camlocks and studs to operate together for
consistent locking and unlocking.

7. Verify that chuck fits spindle properly by

problem persists, contact our Tech Support.

8.

tion, they are not seated together firmly as

surfaces carefully, and re-install. If problem
persists, contact our Tech Support.

5. Incrementally tighten camlocks in criss-cross

or star pattern to ensure that chuck seats

6.

between the

in

following figure.

evenly against spindle.

checking for any gaps between mating sur­faces.

When chuck is fully seated and all camlocks

are tight, verify that cam line is
two “V” marks on spindle nose, as shown

Cam line between “V”s

Figure 23. Cam line positioned between the "V"

marks after the camlocks are fully tightened.

camlock is tight, stud may be installed at
incorrect height. To fix this, adjust stud
height as shown in following figure. Make
sure to re-install stud cap screw afterward.

—If there is not a gap, proceed to Step 8.

—If there is a gap, remove chuck, re-clean

mating surfaces carefully, and re-install. If

Verify that chuck/spindle tapers are seat-

ed firmly together by removing chuck, per
Chuck Removal instructions, and pay close
attention to how easily tapers release.

—If it was necessary to bump chuck or use

a mallet to release tapers, then they are
seating together properly.

—If tapers released easily with little interven-

required. Remove chuck, re-clean mating

Registration Marks

. These marks will

— If adjusting stud height does not correct

problem, try swapping stud positions on

INCORRECT INCORRECT

Stud Too High:

Turn In

One-Turn

Figure 24. Correcting an improperly installed

stud.

Model G0773 (Mfd. Since 12/14)

Stud Too Low:

Turn Out

One-Turn

Spindle & Chuck

Camlock

Registration Marks

Spindle

Figure 25. Registration mark locations.

-29-

Chuck Removal

To remove chuck:

Installation & Removal Devices

below.

This 3-jaw, scroll-type chuck has an internal scroll­gear

djusted

with the chuck key

cylindrical
parts on-center with the axis of spindle rotation
and can be

at high speeds if the workpiece

is properly clamped and balanced.

Never mix jaw types or

positions to

accommodate an odd-shaped workpiece.

he

chuck will spin out of balance an

may throw the

workpiece

Instead, use an independent jaw chuck

or a faceplate.

Tip: Camlocks can become very tight. A

cheater pipe may be used as a last resort to
add leverage when loosening. After loosen­ing, you may need to wiggle the chuck key in

4.

5.

ing motion to carefully slide studs out of cam

rotate it approximately 60° and tap it again.

are properly aligned for removal.

1. DISCONNECT LATHE FROM POWER!

2. Use appropriate lifting, support, or protective

device to protect ways and support chuck
(refer to
section for more details).

Scroll Chuck

Clamping

that moves all jaws in unison when a

. This chuck holds

rotated

3. Loosen camlocks by turning key counter­clockwise until each cam line is aligned with
its corresponding spindle mark, as shown

Cam line and spindle mark aligned

Figure 26

. Camlock is fully loosened when the

cam line is aligned with the spindle mark.

the camlock to fully disengage the stud.

Using dead blow hammer or other soft mal-

let, lightly tap around outer circumference of
chuck body to loosen it from spindle.

Remove chuck from spindle, using light rock-

holes.

— If chuck does not immediately come off,

Make sure all marks on cams and spindle

!

Safer Inside

Jaw Use

CORRECT

Safer Outside

Jaw Use

CORRECT

Safer Outside

Jaw Use

CORRECT

Safer Inside

Jaw Use

CORRECT

d

Insufficient
Jaw Clamping

Bar Stock

INCORRECT

Unsafe Jaw Position and
Poor Scroll Gear Engagement

Poor Grip

Shallow

Bar Stock

INCORRECT

Unsafe Inside

Jaw Use

Poor Scroll

Shallow

Bar Stock

Unsafe Jaw
Position

Unsafe Jaw Position

Cylinder

Poor Scroll

Gear Engagement

Gear
Engagement

INCORRECT

INCORRECT

T

Unstable

Workpiece

Unstable

Workpiece

-30-

Figure 27. Jaw selection and workpiece holding.

Model G0773 (Mfd. Since 12/14)

Changing Jaw Set

The 3-jaw scroll chuck included with the lathe
features inside and outside
sets

move in unison to

center a concentric workpiece.

When installing the jaws
sure they are installed correctly. Incorrect installa­tion will result in jaws that do not converge evenly
and are unable to securely clamp a workpiece.

Jaws are numbered from 1–3 (see Figure below).
The number is typically stamped on the side or
bottom. Jaws are designed to be installed coun­terclockwise in numerical order in the matching
numbered jaw guides, so they will hold a concen­tric workpiece evenly.

To change jaw set:

1.

2.

(refer

subsec-

3.

4.

5.

n safe place free

6.

of outer scroll-gear lead thread about to enter
a jaw guide (see below).

3

7. Insert jaw #1 into jaw guide #1 and hold jaw

8

engage tip of scroll-gear lead thread into jaw.

9

converge

sequentially

tion.

DISCONNECT MACHINE FROM POWER!

hardened steel jaw

(see Figure below), which

, it is important to make

Inside SetOutside Set

Figure 28. Chuck and jaw selection.

Use appropriate device to protect ways

to Installation & Removal Device
tion).

Insert chuck key and turn it counterclockwise

to back jaws out and remove them individu­ally in descending order (i.e., 3, 2, 1).

Use mineral spirits to clean debris and grime

from jaws and chuck jaw guides.

Apply thin coat of NLGI #2 grease to surfaces

of removed jaw set. Store i
from moisture and abrasives.

Rotate chuck key clockwise until you see tip

2

1

1

Jaw Guides

Jaw Numbers

3

1

2

3

Figure 29. Jaw guide and jaw numbers.

1

Model G0773 (Mfd. Since 12/14)

Lead Thread

Figure 30. Lead thread on scroll gear.

against scroll-gear.

. Rotate chuck key clockwise one turn to

2

Pull jaw; it should be locked into jaw guide.

. Install remaining jaws in numerical order, in

the same manner. The jaws should
evenly at center of chuck.

— If jaws do not converge evenly, remove

them. Check that jaw numbers and jaw
guides match. Re-install jaws
1–3, making sure each one engages with
scroll-gear lead thread during its first rota-

-31-

Tailstock

The tailstock is typically used to support long
workpieces at the side opposite the spindle, using
a live or dead center. It can also hold a tapered
drill bit (or a drill chuck with a regular drill bit) for
boring holes. Unlike boring done with a drill press
where the workpiece is fixed and the drill bit
rotates, the drill bit in a tailstock remains station­ary while the workpiece is rotated by the spindle.

The entire tailstock can be repositioned and
locked in place along the length of the bed. An
independently controlled offset adjustment allows
the upper part of the tailstock to move perpen­dicular to the bedways so it can be aligned with
the spindle center (for concentric turning) or offset
from the spindle center (for tapered turning).

The tailstock quill also features independent
adjustment controls that allow it to be advanced
toward the spindle or locked firmly in position.

1. Rotate tailstock lock lever clockwise (facing

2.

3.

to lock tailstock against bedways.

1. Rotate quill lock lever counterclockwise to

2.

toward spindle or counterclockwise to move it

3.

quill.

Tailstock Quill Specs

Graduated Dial on Handwheel

Increments ................................................. 0.001"

One Full Revolution ..................................... 0.04"

Increments on Quill Scale

Inch ............................. 0"–2" in 0.10" Increments

Metric .................... 0–50mm in 1mm Increments

Positioning Tailstock

machine) to unlock tailstock from bedways.

Slide tailstock to desired position by pushing

it along the bedways.

Rotate tailstock lock lever counterclockwise

Using Quill

loosen quill.

Tailstock

Lock Lever

Quill

Figure 31. Tailstock controls and features.

Offset Adjustment

Handwheel

Quill Lock

Screw (1 of 2)

Turn quill handwheel clockwise to move quill

Quill

away from spindle.

Rotate quill lock lever clockwise to secure

Lever

-32-

Model G0773 (Mfd. Since 12/14)

To install tooling in the tailstock:

1.

2.

3.

attempting to twist it—a firmly seated tool will

4.

is close to, but not touching, workpiece, then

5.

tool into workpiece.

Installing Tooling

Note: If the tooling has an open hole in the end,

then a screw can be threaded into the end of the
tool to provide a solid surface for the quill pin to
push against when the quill is retracted for tool
removal. Otherwise, removal of such tooling may
be difficult.

1. Use shop rag to hold tool.

2.

forced out of quill.

The tailstock quill accepts MT#3 tapered arbors
(see the Figures below for examples).

With tailstock locked in place, unlock quill,

then use handwheel to extend it approxi­mately 1".

Solid

End

Figure 32. Types of tapered arbors and tooling.

Open

End

Solid

End

Screw

End

Tang

Thoroughly clean and dry tapered mating
surfaces of quill and center, making sure no
lint or oil remains on tapers.

With a firm and quick motion, insert tool into

quill. Check to see if it is firmly seated by

not twist.

Unlock tailstock and move it until tip of tool

lock tailstock.

Start spindle rotation, unlock quill lock lever,

then turn quill handwheel clockwise to feed

Removing Tooling

Rotate quill handwheel counterclockwise to

fully retract quill into tailstock until tool is

Figure 33. Example photos of inserting tools into

the tailstock.

Model G0773 (Mfd. Since 12/14)

-33-

This is an essential adjustment that should be ver­ified or performed each time the tailstock is used
to turn concentric workpieces between centers
or immediately after offsetting the tailstock when
turning a taper. If the tailstock is not aligned with
the spindle centerline when it is supposed to be,
turning results will be inaccurate along the length
of the workpiece.

Offsetting Tailstock

The tailstock quill can be offset from the spin­dle centerline for turning tapers. Offsetting quill
toward the front of the lathe results in a taper
at the tailstock end. Conversely, offsetting quill
toward the back of the lathe results in a taper at
the spindle end.

Note: The marks on the offset indicator are arbi­trary. For a precise offset, use a dial indicator to
check quill movement while adjusting the screws.

To offset the tailstock:

1.

2.

directions for desired offset (see below).

3. Tighten tailstock lock to secure the offset.

To align tailstock to spindle centerline:

1.

level from side to side and from front to back.

— If bedway is not level, correct this condition

before continuing with this procedure (refer

2.

3.

trated in below.

Note: As long as this dead center remains

unmoved in the chuck, its point will remain
true to the spindle centerline. However, if the
center is removed and later returned to the
chuck, the point must be re-turned to once
again be true with the spindle centerline.

Adjustment
Set Screws

(1 of 2)

Offset

Indicator

Aligning Tailstock to Spindle
Centerline

Items Needed Qty

Hex Wrench 4mm .............................................. 1

Round Stock 2" x 6" .......................................... 2

Use precision level to make sure bedway is

to Leveling section in this manual).

Figure 34. Tailstock offset adjustment.

Tool Needed Qty

Hex Wrench 4mm .............................................. 1

Loosen tailstock lock to release clamping
pressure on top and bottom castings.

Rotate adjustment set screws in opposite

Turn
CCW

Turn
CW

Turn
CW

Turn
CCW

Center drill both ends of a piece of round

stock, then set it aside for use in Step 5.

Use another piece of round stock to make a

dead center. Turn it to a 60° point, as illus-

Figure 36. Turning a dead center.

Figure 35. Example of set screw adjustment in

-34-

relation to tailstock movement.

Model G0773 (Mfd. Since 12/14)

— If test stock is thinner at tailstock end,

the

below.

4. Install center in tailstock.

5.

Attach lathe dog to test stock from Step 2

,

below.

6. Turn 0.010" off stock diameter.

7.

Note: If necessary in the following step, refer

subsection for

8. Use calipers to measure both ends of work-

at tailstock end, move

tance of taper amount, as shown below.

9. Repeat Steps 6–8 until desired accuracy is

then mount it between centers, as shown

piece.

— If test stock is thicker

tailstock toward front of lathe 1⁄2 the dis-

Figure 37. Example of stock mounted between

the centers.

Mount test or dial indicator so that plunger is

on tailstock quill.

to the Offsetting Tailstock

Move tailstock toward

1

front of lathe

/2 the

amount of taper.

Looking down from above.

Figure 38. Adjust tailstock toward the operator.

move tailstock toward back of lathe 1⁄2
distance of the amount of taper, as shown

Looking down from above.

Model G0773 (Mfd. Since 12/14)

Move tailstock toward

back of lathe

1

/

the

2

amount of taper.

Figure 39. Adjust tailstock away from operator.

-35-

Dead Centers

A dead center is a one-piece center that, when
mounted in the tailstock, does not rotate with the
workpiece and is used to support long, slender
workpieces.

Use the dead center in the spindle for operations
where the workpiece rotates with the center and
does not generate friction.

1. DISCONNECT LATHE FROM POWER!

2.

and center,

Note: This will prevent the tapered surfaces

from seizing due to operational pressures,
which could make it very difficult to remove

3.

4.

The

centers.

To remove the sleeve and center from the spindle,
insert a piece of round bar stock (or similar)
through the outside end of the spindle. Have
another person hold onto the sleeve and center
with a gloved hand or shop rag, then tap the bar
stock to knock the sleeve loose.

Mounting Dead Center in Spindle

Thoroughly clean and dry all threads and

mating surfaces of spindle bore
making sure that no lint or oil remains on
these surfaces.

the center.

Figure 40 shows the MT#3 and MT#5 dead cen­ters included with the lathe.

MT#3 Dead

Center

Figure 40. Dead centers.

MT#5 Dead

Center

Mount chuck or faceplate onto spindle, which-

ever is correct for your operation.

Insert center into spindle bore through chuck

or faceplate.

Figure below shows an example photo
of a dead center installed in spindle, using a
lathe dog and faceplate for turning between

MT#5 Dead

Center

Lathe

Dog

-36-

Figure 41. Example of using a dead center with

a faceplate and lathe dog.

Removing Center from Spindle

Model G0773 (Mfd. Since 12/14)

Mounting Center in Tailstock Removing Center from Tailstock

To remove the center from the quill, hold onto it
with a gloved hand or shop rag, then rotate the
quill handwheel counterclockwise to draw the quill
back into the casting until the center releases.

To mount center in tailstock:

1.

2.

making sure no lint or oil remains on tapers.

3. Use quill handwheel to feed quill out from
casting approximately 1".

4. Insert center into tailstock quill.

5.

Note: Only apply enough pressure with

tailstock quill to securely mount workpiece

ter against workpiece, or it may become
difficult to remove later, and it will result in

age workpiece and center.

Note: Only apply enough pressure to securely
mount the workpiece between centers. Avoid
over-tightening the center against the workpiece,
or it may become difficult to remove later. Also,
over-tightening will result in excessive friction and
heat, which may damage the workpiece or center.

1. DISCONNECT LATHE FROM POWER!

2.

3.

4.

center holes, then mount workpiece between
centers and hold it in place with light pressure

5.

against workpiece (see example below).

Either a carbide-tipped dead center or live center
can be used in the tailstock. Mounting instructions
are the same for both. The

shows
an example photo of a dead center mounted in a
tailstock.

Figure below

Mounting Workpiece Between
Centers

Dead Center

Drill center holes in both ends of workpiece.

Install dead center in spindle with lathe dog

and chuck, faceplate or drive plate, then
install live center or carbide-tipped dead cen­ter in tailstock.

Lubricate dead center point and workpiece

Figure 42. Example of using dead center

installed in the tailstock.

from tailstock center.

DISCONNECT MACHINE FROM POWER!

Thoroughly clean and dry tapered mating

surfaces of tailstock quill bore and center,

Note: The maximum quill travel is 3.2", but

we do not recommend extending the quill
more than 1" or stability and accuracy will be
reduced.

Seat center firmly into quill during workpiece

installation by rotating quill handwheel clock­wise to apply pressure with center engaged
in center hole of workpiece.

Seat center firmly into quill by rotating quill

handwheel clockwise to apply pressure

Figure 43. Example photo of a workpiece

mounted between two centers.

between centers. Avoid overtightening cen-

excessive friction and heat, which may dam-

Model G0773 (Mfd. Since 12/14)

-37-

Compound Rest Four-Way Tool Post

The four-way tool post is mounted on top of the
compound rest
tools

Each tool can be quickly indexed to the workpiece
by
post to the desired position, then retightening the
handle to lock the tool into position.

To install a tool in tool post:

1

underneath them (see below).

2. Firmly secure cutting tool with at least two

3.

terline, as instructed in next subsection.

The compound rest handwheel has an indirect­read graduated scale. This means that the dis­tance shown on the scale represents the actual
distance the cutting tool moves. The base of the
compound rest has another graduated scale used
for setting the cutting tool to a specific angle.

Graduated Dial

Increments ............................... 0.001" (0.025mm)

One Full Revolution .....................0.08" (2.03mm)

Tool Needed Qty

Hex Wrench 6mm .............................................. 1

To set compound rest angle:

to be loaded simultaneously.

loosening the top handle, rotating the tool

Installing Tool

Tool Needed Qty

Tool Post T-Wrench ........................................... 1

and allows a maximum of four

1. Loosen cap screws shown in Figure 44.

x 2

Figure 44. Compound rest angle adjustments.

2. Rotate rest to desired angle, as indicated by

scale at base, then retighten cap screws.

Tip: The first time you set the compound rest

angle for cutting threads, mark the location
on the cross slide as a quick reference point.
This will allow you to quickly return the com­pound rest to that exact angle the next time
you need to cut threads.

. Adjust tool post bolts so cutting tool can fit

Tool Post

Bolt

Cutting

Tool ½"

Figure 45. Example of tool mounted in tool post.

Over-extending a cutting tool from the post
will increase risk of tool chatter, breakage,
or tool loosening during operation, which
could cause metal pieces to be thrown at
the operator or bystanders with great force.
DO NOT extend a cutting tool more than 2.5
times the width of its cross-section (e.g.,

2.5 x 0.5" = 1.25").

-38-

tool post bolts.

Check and adjust cutting tool to spindle cen-

Model G0773 (Mfd. Since 12/14)

Aligning Cutting Tool with Spindle

For most operations, the cutting tool tip should be
aligned with the

centerline, as illustrated

below.

There are a number of ways to check and align
the cutting tool to the spindle centerline. If nec­essary, you can raise the cutting tool by placing
steel shims underneath it. The shims should be
as long and as wide as the cutting tool to properly
support it.

Below are two common methods:

• Move the tailstock center over the cross slide

to measure the distance

cutting tool height so

•

tailstock

Aligning Tailstock To Spindle Centerline
in this manual for detailed instructions).

To align cutting tool with tailstock center:

1.

2.

3.

4.

aligned vertically with center tip, as illustrated
below.

Centerline

spindle

Tools Needed Qty

Tool Post T-Wrench ........................................... 1

Steel Shims ....................................... As Needed

Cutting Tool ....................................................... 1

Tailstock Center ................................................. 1

Cutting

Tool

Figure 46. Cutting tool aligned with spindle

centerline (viewed from tailstock).

Spindle
Center

Line

Mount cutting tool in tool post, then secure

post so tool faces tailstock.

Install center in tailstock, and position center

tip near cutting tool tip.

Lock tailstock and quill in place.

Adjust height of cutting tool so tool tip is

(Top View)

Tailstock

Center

Cutting

Tool

and use a fine ruler
from the surface of the cross slide to the tip
of the center. Adjust the
it is the same distance above the cross slide
as the tailstock center.

Align the tip of the cutting tool with a

center, as instructed in the following pro­cedure. For this to work, the tailstock must
be aligned to the spindle centerline (refer to

Model G0773 (Mfd. Since 12/14)

Cutting

Tool

Figure 47. Cutting tool aligned to the tailstock

center.

Tailstock

Center

(Side View)

-39-

Manual Feed

The cutting tool can be manually fed into the
workpiece using the carriage, cross slide, and
compound rest handwheels shown below.

Carriage

Handwheel

Compound

Rest

Handwheel

Carriage Handwheel

Graduated Dial

Increments ...................................0.08" (2.03mm)

One Full Revolution ........................1. 5" (3 8.1mm)

Use the carriage handwheel to move the carriage
left or right along the bed. Adjust the position of
the graduated scale by holding the handwheel
with one hand and turning the dial with the other.

Cross Slide Handwheel

Graduated Dial

Increments ............................... 0.001" (0.025mm)

One Full Revolution .....................0.08" (2.03mm)

Cross Slide

Handwheel

Figure 48. Manual feeding controls.

Use this handwheel to move the tool toward and
away from the work. The cross slide handwheel
has an indirect-read graduated dial, which shows
the actual distance the table moves.

Compound Rest Handwheel

Graduated Dial

Increments .............................. 0.001" (0.025mm)

One Full Revolution .....................0.08" (2.03mm)

Use this handwheel to move the cutting tool lin­early along the set angle of the compound rest.
Set the compound rest angle by hand-rotating
it and securing it with the two cap screws (see
Figure 44 on Page 38). The compound rest has
an indirect-read graduated dial, which shows the
actual distance the tool moves.

-40-

Model G0773 (Mfd. Since 12/14)

Spindle Speed

Using the correct spindle speed is important for
getting
maximizing tool life.

To set the spindle speed for your operation, you
will need to: 1) Determine the

spindle speed

for the cutting task, and 2)

lathe

controls to produce the required spindle speed.

Many variables affect the optimum spindle speed
to use for any given operation

but the two most
important are the recommended cutting speed for
the workpiece material and the diameter of the
workpiece, as noted in the formula shown below.

Cutting speed, typically defined in feet per minute
(FPM), is the speed at which the edge of a tool
moves across the material surface.

A recommended cutting speed is an ideal speed
for cutting a

in order to produce

the desired finish and optimize tool life.

The books

Machine

Shop Practice

vide excellent recommendations for which cutting
speeds to use when calculating the spindle speed.
The

also provide a wealth of additional
information about the variables that affect cutting
speed and

A
spindle speed calculators that can be found on
the internet.

take into
account the applicable variables in order to deter­mine the best spindle speed for the operation.

safe and satisfactory results, as well as

best

Configure the

Determining Spindle Speed

,

Setting Spindle Speed

Spindle speed is selected by positioning the
V-belt either between the spindle and motor pul­leys (see Figure 50), or between the spindle and
idler pulleys. Select the motor pulleys for high
(720-2100 RPM) or idler pulleys for low (150–470
RPM) speed ranges. The V-belt diagram below is
also found on the headstock.

Refer to Tensioning & Replacing V-Belts on
Page 70 for instructions on removing and re­installing V-belts.

Tool Needed Qty

Hex Wrench 4mm .............................................. 1

Idler

Pulleys

*Recommended

Cutting Speed (FPM) x 12

Dia. of Cut (in inches) x 3.14

Spindle

Speed

=

(RPM)

*Double if using carbide cutting tool

Figure 49. Spindle speed formula for lathes.

type of material

se sources

Machinery’s Handbook or

, and some internet sites, pro-

they are a good educational resource.

V-Belt

Spindle

Pulleys

Motor

Pulleys

Figure 50. Belt positioned for 720 RPM.

lso, there are a large number of easy-to-use

These sources will help you

Model G0773 (Mfd. Since 12/14)

-41-

Understanding Gear

Charts

This subsection explains how to understand the
feed and thread charts on the headstock. If you do
not understand lathe gear charts, or need a quick
refresher, read this before configuring the end
gears for power feeding or threading operations.

Feed & Thread Charts Label

The feed and thread charts label (see Figure 51)
provides information for setting up end gears for
threading or non-threading operations. The top
displays metric and inch thread charts, the bottom
displays a feed chart.

Feed & Thread

Charts Label

Thread Charts—Display headstock end gear
positions used for cutting various metric or inch
threads (see Figure 53).

Gearbox

Dials

Figure 51. Feed and thread charts label.

Feed Chart—Displays gearbox dial positions for

different speeds of automatic feed (power feed)
used with turning operations (see Figure 52).

Figure 53. Threading charts.

-42-

Figure 52. Feed chart.

Model G0773 (Mfd. Since 12/14)

How to Read the Feed Chart

Figure 54 identifies the fifteen available feed

rates each for longitudinal and transverse carriage
movement.

How to Read the Thread Charts

Figure 57 identifies the charts to use when set-

ting carriage feed movement for metric or inch
threading.

Indicates Threads

Per Inch (TPI)

Indicates Metric

Thread Pitch

Figure 54. G0773 feed rate chart.

Figure 55 indicates that for a longitudinal feed

rate of 0.0016 in/rev., the G position gear must be
30T, the numeric feed dial set to 1, and the alpha
feed dial set to A (see Figure 56).

Longitudinal

Feed Icon

30T Gear in

G Position

Numeric Feed

Dial Set to 1

Feed Rate

.0016 in/rev.

Alpha Feed

Dial Set to A

Figure 55. Reading feed chart.

Figure 57. Headings indicate inch or metric

threads.

Figure 58 shows the threads per inch (TPI) on the
applicable chart.

Threads

Per Inch

(TPI)

Figure 58. Numbers in dotted line indicate the

TPI or threads per inch.

Figure 59 identifies the end gears on the upper,
middle, and lower shafts. The gears are repre­sented by letters.

Numeric

Feed Dial

Figure 56. Feed dial and gear settings for

Model G0773 (Mfd. Since 12/14)

Alpha

Feed

Dial

0.0016 in/rev.

G Position

Gear 30T

Upper Shaft Gears

Middle Shaft Gears

Lower Shaft Gears

Figure 59. Identification of gears on shafts.

-43-

Figure 60 shows how the gearing illustration in
the thread chart relates to the end gears.

Figure 60. Power feed gearing setup.

Power Feed

The carriage has power feed (or automatic feed)
options for threading or non-threading operations.
This section describes how to use the power feed
option for non-threading operations. To learn how
to power the carriage for threading operations,
refer to Threading on Page 49.

To avoid damaging lathe, NEVER allow
cutting tool to run into chuck! ALWAYS
make sure spindle is completely stopped
BEFORE using headstock controls to make
changes.

Power Feed Controls

Use the following descriptions and figures to
understand the power feed controls.

Before using power feed, you may have to recon­figure the end gears, depending on how they are
set up (refer to Power Feed Configuration on
Page 45). The lathe comes from the factory with
the end gears set up in the power feed configura­tion.

A. Spindle Direction Switch: Enables forward

or reverse carriage travel when feed direction
dial and half nut lever are engaged. The car­riage will not move when the switch is in the
"0" position.

B

A

-44-

Figure 61. Spindle switch and feed rate chart.

Model G0773 (Mfd. Since 12/14)

B. Feed Rate Chart: Displays dial settings for

selected feed rate (see Figure 62).

Setting Power Feed Rate

Follow the example below to better understand
how to set the lathe power feed.

Tools Needed Qty

Hex Wrench 5mm .............................................. 1

Hex Wrench 8mm .............................................. 1

To set a feed rate of 0.0016 in/rev.:

1. DISCONNECT MACHINE FROM POWER!

2. Install 30T change gear in "G" position (see
Figure 64).

Figure 62. Feed chart.

C. Half Nut Lever: Engages/disengages half

nut for power feed operations.

C

Figure 63. Half nut lever.

To avoid potential carriage/chuck crash,
disengage half nut lever immediately after
completing power feed operations.

30T Change

Gear

0.0016 in/rev.

Figure 64. Reading feed chart for .0016 in/rev.

3. Set gearbox dials to positions "A" and "1", as
shown in Figure 65.

Model G0773 (Mfd. Since 12/14)

Figure 65. Gearbox dial settings for .0016 in/rev.

-45-

End Gears

This section explains how to configure end gears
for feeding and threading operations.

Power Feed Configuration

The end gears are preset by the factory for power
feeding (see Figure 66).

"G" Position

Gear 30T

(Upper Shaft)

Gear 91T

(Middle Shaft)

Gear 90T

(Lower Shaft)

Secondary Threading Configuration

This configuration is used for metric and 19TPI
threading. Mesh the "G" position gear with the
91T change gear, and mesh the 86T change gear
with the 90T gear on the lower shaft, as shown in

Figure 68.

Figure 66. Gearing configuration for power

feeding.

Primary Threading Configuration

This configuration is used for all inch threading
except for 19TPI. Mesh the "G" position gear with
the 91T change gear, and mesh the 91T change
gear with the 90T gear on the lower shaft, as
shown in Figure 67.

Figure 68. End gear configuration for metric and

19TPI threading.

Figure 67. End gear configuration for inch

threading.

-46-

Model G0773 (Mfd. Since 12/14)

End-Gear Configuration Example

Follow the example below to better understand
how to configure the end gears for inch threading.

Tools Needed Qty

Hex Wrench 5mm .............................................. 1

Hex Wrench 6mm .............................................. 1

Hex Wrench 8mm .............................................. 1

Open-End Wrench 19mm .................................. 1

5. Loosen 86T/91T gear support shaft and slide
middle gear away from lower position gear
(see Figure 71).

30T Gear

91T Gear

Gear-Support

Shaft

To configure end gears for threading 72 TPI:

1. Locate 72 on the metric thread chart, then
locate the 30 "G" position gear (see Figure

69), which corresponds to 1.5 metric thread

pitch.

30T Gear

72 TPI

Figure 69. Locating change gears for 72 TPI.

2. DISCONNECT LATHE FROM POWER!

3. Open headstock end gear cover.

86T Gear

Arm-Support

Cap Screw

Figure 71. End gear placement.

6. Remove cap screw and flat washer from "G"

position, position gear, then slide gears off of
shaft.

7. Slide 30T gear onto "G" position shaft, mak­ing sure to align the key and keyway.

Note: Position the flat, non-stepped face of

the gear away from the headstock so it will
mesh with the 91T gear in Step 11.

8. Secure 30T gear with flat washers and cap
screws removed earlier.

90T Gear

4. While holding 86T/91T gears, loosen arm
support cap screw shown in Figure 70, and
slowly let gears pivot down and away from
"G" position gear.

"G" Position

Gear

86T/91T

Gears

Arm

Support

Lower

Arm Support

Cap Screw

Figure 70. Arm support and end gears.

Model G0773 (Mfd. Since 12/14)

Position

Gear 90T

9. Slide 91T gear against lower 90T gear (see
Figure 72) until they mesh with 0.002" to

0.004" backlash, then tighten gear support
shaft

30T Gear

91T Gear

86T Gear

Arm-Support

Cap Screw

Figure 72. 30T gear installed.

Gear-Support

Shaft

90T Gear

-47-

10. Rotate the 91T gear up against the 30T gear
until they mesh with 0.002" to 0.004" back­lash and re-tighten arm support cap screw
(see Figure 73).

30T Gear

Gear-Support

Shaft

91T Gear

86T Gear

To configure end gears for reverse feed/
reverse threading operations:

1. DISCONNECT LATHE FROM POWER!

2. Open headstock end gear cover.

3. Loosen upper arm support cap screw shown
in Figure 74.

4. Pivot upper arm-support up so 2nd upper

arm gear and spindle gear mesh with 0.002"
to 0.004" backlash, then tighten upper arm­support cap screw (see Figure 75).

Arm-Support

Cap Screw

Figure 73. Inch threading gear configuration.

11. Re-install end-gear cover.

90T Gear

Reverse Feed & Threading
Configuration

For reverse feeding operations, the upper end­gear arm support (see Figure 74) must be repo­sitioned so the 2nd upper end-gear meshes with
the spindle gear.

Tools Needed Qty

Hex Wrench 6mm .............................................. 1

Spindle Gear

2nd Upper

1st Upper
End Gear

End Gear

Spindle Gear

(Behind Spindle

Pulley)

2nd Upper

End Gear

1st Upper
End Gear

Figure 75. Reverse threading gearing

configuration.

5. Re-install end gear cover.

Upper

Arm-Support

Upper

Arm-Support

Cap Screw

Upper

Arm-Support

Handle

Upper Arm

Support Cap

Screw

Upper Arm

Support

Handle

Figure 74. Reverse threading end gear

components.

-48-

Upper Arm

Support

Model G0773 (Mfd. Since 12/14)

Threading

When threading, use slowest speed pos­sible and avoid deep cuts, so you are able to
disengage half nut when required to prevent
a carriage crash!

The following subsections will describe how to
use the threading controls and charts to set up the
lathe for a threading operation. If you are unfamil­iar with the process of cutting threads on a lathe,
we strongly recommend that you read books,
review industry trade magazines, or get formal
training before attempting any threading projects.

Headstock Threading Controls

The threading charts on the headstock face dis­play the settings for inch and metric threading.

Using the controls on the lathe, follow the exam­ple below to understand how to set up the lathe
for the desired threading operation.

To set dials for 72 TPI:

1. Arrange gears in Primary Threading
Configuration, with 30T gear in "G" position,
as explained on Page 46.

3. Locate A above 72 TPI and find 1 to the left

of it.

Note: In the next step, use the chuck key to

rock the spindle back-and-forth to help mesh
the gears as you make adjustments.

4. Position gearbox dials, as shown in Figure

77.

Figure 77. Gearbox dial settings for 72 TPI.

The lathe is now setup to cut 72 TPI threads.

Apron Threading Controls

The half nut lever engages the carriage with the
leadscrew, which moves the carriage and cutting
tool along the length of the workpiece for thread­ing operations (see Figure 78).

2. Locate 72 TPI on the inch threading chart
below.

Numeric Dial

Figure 76. 72 TPI and corresponding dial

Model G0773 (Mfd. Since 12/14)

72 TPI

positions.

Alpha Dial

Thread Dial

Engaged Disengaged

Figure 78. Apron threading controls.

Half Nut

Lever

-49-

Thread Dial

When the number "0" on the thread dial (Figure

79) aligns with the scale mark, this indicates when

to engage the half nut during inch threading.

Scale Mark

x2

To change thread dial gears:

1. Loosen both cap screws shown in Figure 79

and remove thread dial.

2. Remove Phillips head screw shown in Figure
80, remove existing gear from thread dial,

and replace with correct gear for threading
operation.

3. Replace Phillips head screw and re-install
thread dial, making sure teeth of thread dial
gear mesh with lead screw.

Gear

Figure 79. Thread dial details.

Note: The thread dial is not used for metric

threading. For that type of operation, you must
leave the half nut engaged from the beginning
until turning is complete.

When the first cutting pass is complete, the opera­tor disengages the carriage from the leadscrew
using the half nut lever. The operator returns the
carriage for the next pass and re-engages the half
nut using the same thread dial setting to resume
the cut in the previous pass.

Thread Dial Gears

The G0773 thread dial comes with a 28T gear
installed on the thread dial for cutting standard
threads. A 30T gear is also included for cutting
some metric threads, but it must be installed in
place of the 28T thread dial gear before it can be
used (see Figure 80).

Gear 30T

For Metric

Threads

Thread Dial

Thread Dial Chart

To cut standard threads, only use the 28T gear.
To cut metric threads, consult the thread dial chart
in Figure 81 to determine which gear to use and
when to engage half nut.

Thread Pitch Gear Dial Mark

0.25 Z28 or Z30 Any

0.5 Z28 or Z30 Any

1.0 Z28 or Z30 Any

1.25 Z30 0

2.5 Z30 0

0.3 Z28 or Z30 Any

0.6 Z28 or Z30 Any

1.5 Z28 or Z30 Any

0.35 Z28 0

0.7 Z28 0

1.75 Z28 0

0.4 Z28 or Z30 0

0.8 Z28 0

2.0 Z28 or Z30 0

Figure 81. Thread dial chart.

Gear 28T For
Inch Threads

Figure 80. Thread-dial change gears can be

exchanged for cutting either inch or metric

threads.

-50-

Model G0773 (Mfd. Since 12/14)

SECTION 5: MILL OPERATIONS

The purpose of this overview is to provide the nov­ice machine operator with a basic understanding
of how the machine is used during operation, so
the

discussed later

in this manual

Due to the generic nature of this overview, it is
not intended to be an instructional guide. To learn
more about specific operations, read this entire
manual and
rienced
research outside of this manual by reading "how­to" books, trade magazines, or websites.

To reduce your risk of
serious injury, read this
entire manual BEFORE

Operation Overview

To reduce risk of injury and increase
longevity of machine, always start spindle
rotation with spindle speed dial set to low­est setting.

machine controls/components

are easier to understand.

To complete a typical milling operation, the
operator does the following:

1. Puts on personal protective equipment.

seek additional training from expe-

machine operators, and do additional

using machine.

To reduce risk of eye or face injury from
flying chips, always wear approved safety
glasses and face shield when operating this
machine.

2. Securely clamps workpiece to cross slide

table.

3. With machine disconnected from power,
installs correct tooling.

4. Adjusts mill headstock height.

5. Connects machine to power.

6. Rotates spindle speed dial to lowest setting,

and resets Emergency Stop button.

7. Presses ON button and rotates spindle speed
dial to correct spindle speed.

8. Uses carriage and cross slide controls to per­form operation.

9. Presses Emergency Stop button and waits
for spindle to completely stop before remov­ing workpiece, changing tooling, or changing
spindle speeds.

If you are not experienced with this type
of machine, WE STRONGLY RECOMMEND
that you seek additional training outside of
this manual. Read books/magazines or get
formal training before beginning any proj­ects. Regardless of the content in this sec­tion, Grizzly Industrial will not be held liable
for accidents caused by lack of training.

Model G0773 (Mfd. Since 12/14)

-51-

Removing

Headstock

Compound Rest

The compound rest and tool post must be removed
before milling operations so the cross-slide table
can be used as the milling table.

Tools Needed Qty

Hex Wrench 3mm .............................................. 1

Hex Wrench 4mm .............................................. 1

Removing Compound Rest

Remove both cap screws shown in Figure 82,
then remove compound rest.

Movement

The milling headstock moves in the following
ways:

• Travels up and down the column (Z-axis).

• Tilts 45° left or right relative to the table.

Raising/Lowering Headstock

1. Loosen Z-axis lock lever shown in Figure 84.

Z-Axis

Lock

Lever

x 2

Figure 82. Location of compound rest cap

screws.

Re-installing Compound Rest

Align compound rest with swivel base mounting
post and M8-1.25 T-nuts (see Figure 83), then
secure with cap screws previously removed.

Mounting Post

Figure 84. Location of Z-axis lock lever.

2. Use the coarse vertical handwheel shown

in Figure 85 to adjust headstock height and
relative position of cutting tool before cutting.

Vertical

Handwheel

Fine Vertical

Handwheel

Figure 85. Location of mill headstock vertical

controls.

-52-

x2

Figure 83. Swivel base components.

3. Use the fine vertical handwheel shown in
Figure 85 for precision vertical adjustment

during milling operations.

4. Retighten lock lever.

Model G0773 (Mfd. Since 12/14)

Tilting Headstock

Tool Needed Qty

Wrench 36mm ................................................... 1

To tilt headstock:

These movements are controlled by the car­riage handwheel and cross slide handwheel (see

Figure 88).

1. DISCONNECT MACHINE FROM POWER!

2. Support headstock with one hand, then loos-

en headstock center bolt and angle lock nut
(see Figure 86).

Angle Lock

Nut

Figure 86. Headstock tilt controls.

3. While viewing tilt scale, rotate headstock to

required angle, then retighten center bolt and
angle lock nut to secure headstock.

Cross Slide

Table

Cross Slide

Handwheel

(Y-Axis)

Carriage

Handwheel

(X-Axis)

Figure 88. Table travel controls.

Carriage Handwheel (X-Axis)

Graduated Dial

Increments ................................... 0.01" (0.25mm)

One Full Revolution .......................... 1" (25.4mm)

Use the carriage handwheel to move the carriage
left or right along the bed. Adjust the position of
the graduated scale by holding the handwheel
with one hand and turning the dial with the other.

Table Travel

The cross slide table travels in two directions, as
illustrated in Figure 87:

• X-axis (longitudinal)

• Y-axis (cross)

X-Axis or Longitudinal Travel (Left & Right)

Y-Axis or
Cross Travel
(In & Out)

Figure 87. Possible directions of cross slide

travel.

Cross Slide Handwheel (Y-Axis)

Graduated Dial

Increments ............................... 0.001" (0.025mm)

One Full Revolution .....................0.08" (2.03mm)

Use this handwheel to move the cross slide table
toward or away from the tooling. The cross slide
handwheel has an indirect-read graduated dial,
which shows the actual distance the table moves.

Model G0773 (Mfd. Since 12/14)

-53-

Installing/Removing

3. Insert tooling (not included) into spindle until

in contacts drawbar.

Tooling

Cutting tools are sharp and
can easily cause cutting
injuries. Always protect
your hands with leather
gloves or shop rags when
handling cutting tools.

Installing Tooling

Tools Needed Qty

Wrench 17mm.................................................... 1

Spindle Locking Pin ........................................... 1

To install tooling:

1. DISCONNECT MACHINE FROM POWER!

2. Remove drawbar cap (see Figure 89).

4. Working from the top, thread drawbar by
hand into tooling until snug (see Figure 90).

Figure 90. Threading drawbar into tooling.

5. Insert spindle locking pin into hole in spindle,

and tighten drawbar, as shown in Figure 91.

Note: Do not overtighten drawbar.

Overtightening makes tool removal difficult
and may damage arbor and threads.

-54-

Drawbar Cap

Figure 89. Location of drawbar cap.

Spindle

Locking Pin

Figure 91. Tightening drawbar lock nut.

6. Re-install drawbar cap.

Model G0773 (Mfd. Since 12/14)

Removing Tooling

Tools Needed Qty

Wrench 17mm.................................................... 1

Spindle Locking Pin ........................................... 1

Brass Hammer .................................................. 1

To remove tooling:

1. DISCONNECT MACHINE FROM POWER!

2. Remove drawbar cap.

3. Insert spindle locking pin into spindle, and
loosen drawbar (see Figure 91 on Page 54).

5. Tap top of drawbar with hammer to unseat
taper (see Figure 92).

4. Unthread drawbar from tooling one full rota-

tion.

Note: Do not fully unthread tooling from

drawbar or the drawbar and tool threads
could be damaged in the next step.

Figure 92. Example of tapping drawbar to

unseat tool taper.

6. Hold onto tooling with one hand and fully
unthread drawbar with the other hand.

Model G0773 (Mfd. Since 12/14)

-55-

Spindle Speed

Using the correct spindle speed is important for
safe and satisfactory results, as well as maximiz­ing tool life.

To set the mill spindle speed for operation, you
will need to: 1) Determine the best spindle speed
for the cutting/drilling task, and 2) use the spindle
speed dial to obtain the spindle speed.

Determining Spindle Speed

Many variables affect the optimum spindle speed
to use for any given operation, but the two most
important are the recommended cutting speed
for the workpiece material and the diameter of
the cutting tool, as noted in the formula shown in
Figure 93.

*Recommended

Cutting Speed (FPM) x 12

Tool Dia. (in inches) x 3.14

Spindle

=

Speed
(RPM)

Setting Spindle Speed

1. Set Lathe/Mill selector switch to 2 for milling

operations (see Figure 94).

Lathe/Mill

Selector Switch

Figure 94. Location of lathe/mill selector switch.

2. Rotate variable-speed dial (see Figure 95)

clockwise to select mill speed from 100–
2500 RPM. Rotate dial further clockwise
to increase speed or counterclockwise to
decrease speed.

*Double if using carbide cutting tool

Figure 93. Spindle speed formula for mill/drills.

Cutting speed, typically defined in feet per minute
(FPM), is the speed at which the edge of a tool
moves across the material surface.

A recommended cutting speed is an ideal speed
for cutting a type of material in order to produce
the desired finish and optimize tool life.

The books Machinery’s Handbook or Machine
Shop Practice, and some internet sites, pro­vide excellent recommendations for which cutting
speeds to use when calculating the spindle speed.
These sources also provide a wealth of additional
information about the variables that affect cutting
speed and they are a good educational resource.

Also, there are a large number of easy-to-use
spindle speed calculators that can be found on
the internet. These sources will help you take into
account the applicable variables in order to deter­mine the best spindle speed for the operation.

Variable-Speed Dial

Figure 95. Location of milling head variable-

speed dial.

-56-

Model G0773 (Mfd. Since 12/14)

ACCESSORIES

Installing unapproved accessories may

order online at www.grizzly.com or call 1-800-523-4777

SECTION 6: ACCESSORIES

cause machine to malfunction, resulting in
serious personal injury or machine damage.
To reduce this risk, only install accessories
recommended for this machine by Grizzly.

NOTICE

Refer to our website or latest catalog for
additional recommended accessories.

T10294—11 Pc. Carbide Bit Set 1⁄2"

1

⁄2" shank, 7-piece turning tool set is ideal

This
for a wide variety of projects. Supplied with right
hand and left hand turning/facing tool holders, the
set is complimented with one threading and one
cut-off tool, too. Indexable inserts ensure cutting
surfaces stay sharp.

H2987—½" Bent Lathe Dog
H2988—1" Bent Lathe Dog
H2989 —1½" Bent Lathe Dog
H2990—2" Bent Lathe Dog
H2991—3" Bent Lathe Dog

1

Figure 97. Model H2990

SB1365 —South Bend Lathe Way Oil, 12 oz.
T23962—ISO 68 Moly-D Way Oil, 5 gal.
T23963—ISO 32 Moly-D Machine Oil, 5 gal.
T23964—Moly-D NLGI#2 Grease.

Moly-D oils are some of the best we've found for
maintaining the critical components of machinery
because they tend to resist run-off and maintain
their lubricity under a variety of conditions—as
well as reduce chatter or slip. Buy in bulk and
save with 5-gallon quantities.

⁄2" Bent Lathe Dog.

Figure 96. Model T10294 7-Pc. carbide-tipped

tool set.

SB1235 T23963

Figure 98. 12 oz. way oil & 5 gallon machine oil.

Model G0773 (Mfd. Since 12/14)

T23964

-57-

order online at www.grizzly.com or call 1-800-523-4777

G1070—MT3 Live Center Set

A super blend of quality and convenience, this
live center set offers seven interchangeable tips.
High-quality needle bearings prolong tool life
and special tool steel body and tips are precision
ground. Supplied in wooden box.

Figure 99. G1070 Live Center Set.

H5930—4-Pc. Center Drill Set 60°
H5931—4-Pc. Center Drill Set 82°

Double-ended HSS Center Drills are precision
ground. Each set includes sizes 1–4.

SIZE

1

2

3

4

BODY

DIA.

1

⁄8"

3

⁄16"

1

⁄4"

5

⁄16"

DRILL

DIA.

3

⁄64" 11⁄4"

5

⁄64" 17⁄8"

7

⁄64"

1

⁄8" 21⁄8"

OVERALL

LENGTH

2"

H6202—1/2" x JT3 High-Precision Drill Chuck
H6204—5/8" x JT3 High-Precision Drill Chuck
G1675—Drill Chuck Arbor - R-8/JT3
G1677—Drill Chuck Arbor - MT3/JT3

Unlike most keyed drill chucks, Models H6202
and H6204 are made to very tight tolerances on
CNC equipment and are some of the finest drill
chucks on the market today. They have very high
gripping strength and are suitable for heavy-duty,
high speed drilling. Each chuck includes a high
visibility chuck key. Drill chuck arbors are used to
adapt drill chucks to your milling machine or lathe.

G1677 H6204

Figure 101. High-precision drill chuck and drill

chuck arbor.

G9788—4-Pc. Measuring Tool Set

This is the set you need for accurate measure­ments. Includes a stainless steel 6" dial caliper, a
6" scale with inch scale on one side and a metric
scale on the other, a 1" carbide-tipped microm­eter with vernier scale, and a 4" precision square
with beveled edge. Comes with molded case and
micrometer adjustment wrench.

Figure 102. Model G9788 4-Pc. Measuring Tool

Figure 100. HSS ground center-drill sets.

-58-

Set.

Model G0773 (Mfd. Since 12/14)

order online at www.grizzly.com or call 1-800-523-4777

T10253—2" Mini Self-Centering Swivel Vise
T10254—2" Mini Self-Centering Vise

Ideal for holding small parts and model making.
Both models feature self-centering jaws, adjust-

1

able gib on a dovetailed way, 2

⁄16" jaw opening,

and 2" jaw width. T10253 base swivels 360°, and

3

overall size is 6
removed. T10254 overall size is 6

3

⁄8" H with handle removed.

2

⁄4" L x 4" W x 33⁄8" H with handle

1

⁄2" L x 31⁄2" W x

H6195—3" Rotary Table w/ Clamps

For horizontal or vertical use. 3" diameter table

5

rotates 360°. Low profile—only 1.670" tall. 4

⁄16"
T-slots. 1:36 ratio or 10° per handwheel revolution.
Scale reads to 15 minutes. Has brass lock knob.

5

Table height in horizontal position: 1

1

in vertical position: 3

⁄4".

⁄8";

T10253 T10254

Figure 103. Mini Self-Centering Vises.

4-Flute C-2 Grade Carbide End Mills

These American-made 4-flute Carbide End Mills
feature standard cutting lengths and nominal
minus diameter tolerances. Recommended for
profiling and finishing non-ferrous materials.

Model

H3649

H3650

H3651

H3652

H3653

H3654

H3655

H3656

H3657

H3658

H3659

H3660

Cutting

Diameter

1

⁄16"

3

⁄32"

1

⁄8"

5

⁄32"

3

⁄16"

7

⁄32"

1

⁄4"

9

⁄32"

5

⁄16"

3

⁄8"

7

⁄16" 1" 23⁄4"

1

⁄2 " 1" 3"

Flute

Length

3

⁄16" 11⁄2 "

3

⁄8" 11⁄2 "

1

⁄2 " 11⁄2 "

9

⁄16" 2"

5

⁄8" 2"

5

⁄8" 21⁄2 "

3

⁄4" 2

3

⁄4" 21⁄2 "

13

⁄16" 21⁄2 "

7

⁄8" 21⁄2 "

OA Length

1

⁄2 "

Figure 105. Model H6195 3" Rotary Table w/

Clamps.

R-8 End Mill Holders

Hold your end mills in the Model G0773 spindle
with these quality end mill holders. Sized for vari­ous end mill shanks.

Model Ta per Size

T25697 R-8

T25698 R-8

T25699 R-8

T25700 R-8

T25701 R-8

3

3

5

⁄16"

1

3

⁄8"

⁄2 "

⁄8"

⁄4"

T25697

T25700

Figure 106. R-8 end mill holders.

Figure 104. 4-Flute C-2 grade carbide end mills.

Model G0773 (Mfd. Since 12/14)

-59-

G9274—6" Stainless Steel Outside Calipers
G9275—8” Stainless Steel Outside Calipers
G9276—10” Stainless Steel Outside Calipers
G9277—12” Stainless Steel Outside Calipers
G9278—16” Stainless Steel Outside Calipers

Spring Calipers with quick adjustment nut provide
fast determination of external measurements.
Ideal for physically transferring dimensions from
originals. Five different sizes allow you to match
the best caliper for your shop needs.

Figure 107. G9274 16" Stainless Steel Calipers.

T10255 —Mini Lathe Tool Kit

Includes right, left, and straight turning tool hold-

1

ers with
and
HSS blade and
with

⁄8" HSS tool bits, boring bar with holder

1

⁄8" HSS tool bit, cut off tool holder with 3⁄32"

1

⁄16" HSS blade and 5⁄16" shank, knurling tool

3

⁄8" shank, mini cut off tool holder

holder with pivoting head, single horizontal/verti­cal knurling tool holder and assorted hex wrench-

1

es. Maximum shank size is

⁄2 ".

H7616—Oil Can w/Plastic Nozzle

This high-pressure oil can is perfect for lubricating
the ball oilers found on your machine. Each can
holds 5 ounces of oil.

Figure 109. High-pressure oil can for ball oilers.

H6879—Lathe Operation & Maintenance Book

This detailed metal lathe book provides extensive
coverage of a wide variety of metalworking opera­tions. Special emphasis is placed on lathe com­ponents, accessories, and operating procedures,
including basic machine setup and routine main­tenance. A "must have" reference for all metal
lathe owners. 260 pages.

Figure 108. T10255 Mini Lathe Tool Kit.

-60-

Figure 110. H6879 Lathe Operation &

Maintenance Book.

Model G0773 (Mfd. Since 12/14)

SECTION 7: MAINTENANCE

Daily, After Operations

• Press the Emergency Stop button (to prevent

Always disconnect power
to the machine before
performing maintenance.
Failure to do this may
result in serious person­al injury.

Schedule

accidental startup).

• Vacuum/clean all chips and swarf from bed,

slides.

• Wipe down all unpainted or machined sur-

faces with an oiled rag.

Annually

• Lubricate end gears (Page 65).

Ongoing

To maintain a low risk of injury and proper
machine operation, if you ever observe any of the
items below, shut down the machine immediately
and fix the problem before continuing operations:

• Loose mounting bolts or fasteners.

• Worn, frayed, cracked, or damaged wires.

• Guards or covers removed.

• Emergency Stop button not working correctly
or not requiring you to reset it before starting
the machine again.

• Damaged or malfunctioning components.

Daily, Before Operations

• Add oil to the ball oilers (Page 62).

• Lubricate the leadscrew and carriage rack
(Page 63).

• Lubricate the bedways (Page 63).

• Clean/lubricate the cross slide and com­pound slide (Page 63).

• Disengage the half nut on the carriage (to
prevent crashes upon startup).

• Lubricate column ways (Page 66).

Cleaning/Protecting

Because of its importance, we recommend that
the cleaning routine be planned into the workflow
schedule.

Typically, the easiest way to clean swarf from the
machine is to use a brush and wet/dry shop vacu­um that are dedicated for this purpose. The small
chips left over after vacuuming can be wiped up
with a slightly oiled rag. Avoid using compressed
air to blow off chips, as this may drive them deep­er into the moving surfaces or cause sharp chips
to fly into your face or hands.

All unpainted and machined surfaces should be
wiped down daily to keep them rust free and in top
condition. This includes any surface that is vulner­able to rust if left unprotected. Use a quality ISO
68 way oil (see Page 57 for offerings from Grizzly)
to prevent corrosion.

Model G0773 (Mfd. Since 12/14)

-61-

Lubrication

The lathe has metal-to-metal sliding surfaces that
require regular lubrication to maintain smooth
movement and ensure long-lasting precision.

Other than the lubrication points covered in this
section, all other bearings are internally lubricated
and sealed at the factory. Simply leave them
alone unless they need to be replaced.

Before performing any lubrication task,
DISCONNECT MACHINE FROM POWER!

We recommend using Model SB1365 Way Oil,
T23963 Machine Oil, and T23964 Multi-Purpose
Grease or equivalents (see Page 57) for most
lubrication tasks.

Items Needed Qty

Clean Rags ........................................ As Needed

Mineral Spirits .................................... As Needed

Stiff Brush .......................................................... 1

Pump-Type Oil Can w/Plastic Cone Tip ............ 1

Ball Oilers

Lube Type ............................... ISO 32 Equivalent

Lube Amount ............................ 1 or 2 Squirts/Fill

Lubrication Frequency ................................. Daily

This lathe has four ball oilers that should be oiled
on a daily basis before beginning operation.

Proper lubrication of ball oilers is done with a
pump-type oil can that has a plastic or rubber­ized cone tip. We do not recommend using metal
needle or lance tips, as they can push the ball too
far into the oiler, break the spring seat, and lodge
the ball in the oil galley.

Lubrication Frequency

Lubrication Task Frequency Page

Ball Oilers Daily

Leadscrew & Carriage
Rack

Bedways Daily

Feed Gearbox Annually

Cross Slide & Compound
Slide

End Gears Annually

Mill Column Ways Daily

Daily

Daily

This

Page

63

63

64

64

65

66

NOTICE

The recommended lubrication is based on
light-to-medium usage. Since lubrication
helps to protect value and operation of
machine, these lubrication tasks may need
to be performed more frequently than rec­ommended, depending on usage.

Lubricate the ball oilers before and after machine
use, and more frequently under heavy use. When
lubricating ball oilers, first clean the outside sur­face to remove any dust or grime. Push the tip of
the oil can nozzle against the ball oiler to create
a hydraulic seal, then pump the oil can once or
twice. If you see sludge and contaminants coming
out of the lubrication area, keep pumping the oil
can until the oil runs clear. When finished, wipe
away any excess oil.

Failure to follow reasonable lubrication
practices as instructed in this manual could
lead to premature failure of machine com­ponents and will void the warranty.

-62-

Model G0773 (Mfd. Since 12/14)

Refer to Figures 111–113 to find the location of
each ball oiler.

Figure 111. Apron ball oilers.

Leadscrew & Carriage Rack

Lube Type . . Model SB1365 or ISO 68 Equivalent

Lube Amount ..................................... As Needed

Lubrication Frequency ................................. Daily

Before lubricating the leadscrew and carriage
rack (see Figure 114), clean them first with min­eral spirits. Use a stiff brush to help remove any
debris or grime. Apply a thin coat of oil along the
entire length of the carriage rack. Use a stiff brush
to make sure oil is applied into the leadscrew
threads.

Note: In some environments, abrasive material
can become caught in the leadscrew lubricant and
drawn into the half nut. In this case, lubricate the
leadscrew with a quality dry lubricant.

Bedways

Figure 112. Tailstock and leadscrew end ball

oilers.

Figure 113. End gear ball oilers.

RackLeadscrew

Figure 114. Identification of leadscrew, rack, and

bedways for lubrication.

Bedways

Lube Type . . Model SB1365 or ISO 68 Equivalent

Lube Amount ..................................... As Needed

Lubrication Frequency ................................. Daily

Before lubricating the bedways (see Figure 114),
clean them with mineral spirits. Apply a thin coat
of oil along the length of the bedways. Move the
steady rest, carriage, and tailstock to access the
entire length of the bedways.

Model G0773 (Mfd. Since 12/14)

-63-

Feed Gearbox Cross Slide & Compound Slide

Oil Type .... Grizzly T23963 or ISO 32 Equivalent

Oil Amount ............................................... 1 Quart

Check/Add Frequency ................................. Daily

Change Frequency ................................ Annually

Checking Oil Level

The gearbox reservoir has the proper amount of
oil when the oil level in the sight glass is approxi­mately halfway. The oil sight glass is located on
the front of the gearbox, as shown in Figure 115.

Lube Type . . Model SB1365 or ISO 68 Equivalent

Lube Amount ........................................Thin Coat

Lubrication Frequency ................................. Daily

Use the handwheels to separately move the
cross slide and compound rest as far forward as
possible (see Figure 116). Clean the slides with
mineral spirits and wipe down with a rag. Apply
lubricant and move the slides back and forth to
distribute the oil.

Fill Plug

Drain Plug

Gearbox Oil

Sight Glass

Figure 115. Location of quick-change oil sight

glass and fill plug.

Changing Oil

Place a catch pan under the quick-change gear­box drain plug (see Figure 115). Use an 8mm
hex wrench to remove the gearbox fill plug, then
remove the drain plug and allow the gearbox res­ervoir to empty. Re-install the drain plug and add
oil until the level is approximately halfway in the
gearbox oil sight glass, then re-install the fill plug.

Compound

Bottom Slide

Cross Slide

Bottom Slide

Figure 116. Example of bottom slides.

-64-

Model G0773 (Mfd. Since 12/14)

End Gears

Lube Type . . Model T23964 or NLGI#2 Equivalent

Frequency ............... Annually or When Changing

The end gears, shown in Figure 117, should
always have a thin coat of heavy grease to
minimize corrosion, noise, and wear. Wipe away
excess grease that could be thrown onto the
V-belts and reduce optimal power transmission
from the motor.

Figure 117. End gears.

Handling & Care

Make sure to clean and lubricate any gears you
install or change. Be very careful during handling
and storage—the grease coating on the gears will
easily pickup dirt or debris, which can then spread
to the other gears and increase the rate of wear.

Lubricating

1. DISCONNECT MACHINE FROM POWER!

2. Remove end gear cover and all end gears
shown in Figure 117.

3. Clean end gears thoroughly with mineral spir-

its to remove old grease. Use a small brush if
necessary to clean between teeth.

4. Clean shafts, and wipe away any grease
splatters in vicinity and on inside of end
cover.

5. Using a clean brush, apply a thin layer of
white lithium grease on the gears. Make sure
to get grease between gear teeth, but do not
fill teeth valleys.

6. Apply a small dab of grease to each gear
shaft.

7. Install end gears and mesh them together
with an approximate 0.002"–0.004" backlash.
Once gears are meshed together, apply a
small dab of grease between them where
they mesh together—this grease will be dis­tributed when gears rotate and re-coat any
areas scraped off during installation.

8. Re-install end cover before re-connecting
machine to power.

Make sure the end cover remains installed when­ever possible to keep the gears free of dust or
debris from the outside environment.

Model G0773 (Mfd. Since 12/14)

-65-

Column Rack

Lube Type . . Model SB1365 or ISO 68 Equivalent

Lube Amount ........................................Thin Coat

Lubrication Frequency ................................. Daily

Regular lubrication will ensure your milling head­stock performs at its highest potential. Regularly
wipe table and column rack with recommended
lubrication, then move components back and
forth several times to ensure smooth movements
(see Figure 118).

Machine Storage

To prevent the development of rust and corrosion,
the lathe must be properly prepared if it will be
stored for a long period of time. Doing this will
ensure the lathe remains in good condition for
later use.

Preparing Machine for Storage

1. DISCONNECT MACHINE FROM POWER!

2. Thoroughly clean all unpainted, bare metal

surfaces, then apply a liberal coat of way
oil, heavy grease, or rust preventative. Take
care to ensure these surfaces are completely
covered and that rust preventative or grease
is kept off of painted surfaces.

3. Lubricate machine as outlined in lubrication
section. Be sure to use an oil can to purge all
ball oilers and oil passages with fresh oil.

Figure 118. Column Rack lubrication location.

4. Place a few moisture absorbing desiccant

packs inside electrical box.

5. Cover machine and place it in a dry area that
is out of direct sunlight and away from haz­ardous fumes, paint, solvents, or gas. Fumes
and sunlight can bleach or discolor paint.

6. Every few months, rotate by hand all gear­driven components a few times in several
gear selections. This will keep bearings,
bushings, gears, and shafts well lubricated
and protected from corrosion—especially
during winter months.

Slide carriage, tailstock, and steady rest

down lathe bed to make sure that way spot­ting is not beginning to occur. Move mill
headstock up and down column.

Bringing Machine Out of Storage

1. Remove moisture-absorbing desiccant packs

from electrical box.

-66-

2. Repeat Test Run and Spindle Break-In pro­cedures, beginning on Page 24.

Model G0773 (Mfd. Since 12/14)

Review the troubleshooting and procedures in this section if a problem develops with your machine. If you
need replacement parts or additional help with a procedure, call our Technical Support at [phone].

Note: Please gather the serial number and manufacture date of your machine before calling.

SECTION 8: SERVICE

Troubleshooting

Motor & Electrical

Symptom Possible Cause Possible Solution

Machine does not
start or a circuit
breaker trips.

Machine stalls or is
underpowered.

Machine has
vibration or noisy
operation.

1. Improper switch position at startup.

2. Incorrect power supply voltage.

3. Power supply circuit breaker tripped or fuse
blown.

4. Wiring open/has high resistance.

5. On/Off switch at fault.

6. Emergency stop button engaged or at fault.

7. Spindle speed dial at fault.

8. Spindle direction switch at fault.

9. Lathe/mill selector switch at fault.

10. Spindle rotation switch at fault.

11. Motor at fault.

1. Machine undersized for task.

2. Belts slipping or contaminated with oil or
grease.

3. Wrong workpiece material.

4. Feed rate/cutting speed too fast.

5. Motor overheated.

6. Computer board at fault.

7. Motor speed dial at fault.

8. Pulley/sprocket slipping on shaft.

9. Motor bearings at fault.

10. Motor at fault.

1. Motor or component loose.

2. Bit chattering.

3. V-belt(s) worn or loose.

4. Motor fan rubbing on fan cover.

5. Motor mount loose/broken.

1. DISCONNECT MACHINE FROM POWER; follow
proper procedure for startup (see Page 24).

2. Ensure correct power supply voltage.

3. Ensure circuit is sized correctly and free of shorts.
Reset circuit breaker or replace fuse.

4. Check/fix broken, disconnected, or corroded wires.

5. Test/replace switch.

6. Test/replace Emergency Stop button.

7. Test/replace dial.

8. Test/replace switch.

9. Test/replace switch.

10. Test/replace switch.

11. Test/repair/replace.

1. Use sharp bits/chisels at correct angle; reduce feed
rate/depth of cut; use coolant if possible.

2. Tension/replace belts; ensure belts and pulleys are
clean and dry.

3. Use correct type/size of metal.

4. Decrease feed rate/cutting speed.

5. Use sharp bits; reduce feed rate/depth of cut.

6. Clean motor, let cool, and reduce workload.

7. Test and replace if at fault.

8. Replace loose pulley/shaft.

9. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.

10. Test/repair/replace.

1. Inspect/replace damaged bolts/nuts, and retighten
with thread locking fluid.

2. Replace/sharpen bit; index bit to workpiece; use
correct feed rate and cutting RPM; retract tool
holder and position workpiece closer.

3. Inspect/replace belts with a new matched set.

4. Fix/replace fan cover; replace loose/damaged fan.

5. Tighten/replace.

Model G0773 (Mfd. Since 12/14)

-67-

Lathe Operation

Symptom Possible Cause Possible Solution

Bad surface finish. 1. Wrong spindle speed or feed rate.

2. Dull tooling or poor tool selection.

3. Tool height not at spindle centerline.

4. Too much play in gibs.

Tapered tool difficult
to remove from
tailstock quill.

Cross slide,
compound rest, or
carriage feed has
sloppy operation.

Cross slide,
compound,
or carriage
handwheels hard to
move.

Cutting tool
or machine
components vibrate
excessively during
cutting.

Workpiece is
tapered.

Chuck jaws will
not move or do not
move easily.

1. Quill not fully retracted into tailstock.

2. Contaminants not removed from taper
before inserting into quill.

1. Ways loaded with shavings, dust, or grime.

2. Gibs are out of adjustment.

3. Handwheel loose or excessive backlash.

4. Leadscrew mechanism worn or out of
adjustment.

1. Ways loaded with chips, dust, or grime.

2. Gibs are too tight.

3. Backlash setting too tight.

4. Bedways are dry.

5. Half nut lever engaged.

1. Tool holder not tight enough.

2. Cutting tool sticks too far out of tool holder;
lack of support.

3. Gibs are out of adjustment.

4. Dull cutting tool.

5. Incorrect spindle speed or feed rate.

1. Headstock and tailstock not properly
aligned.

1. Chips lodged in jaws or scroll plate. 1. Remove jaws, clean and lubricate scroll plate, then

1. Adjust for appropriate spindle speed and feed rate.

2. Sharpen tooling or select a better tool for the
intended operation.

3. Adjust tool height to spindle centerline (see Page

39).

4. Tighten gibs (see Page 72).

1. Turn quill handwheel until tapered tool is forced out
of quill.

2. Clean taper and bore, then re-install tool.

1. Clean ways and relubricate.

2. Adjust gibs (see Page 72).

3. Tighten handwheel fasteners, adjust handwheel
backlash to a minimum (see Page 71).

4. Adjust leadscrew to remove end play (see Page

71).

1. Clean ways and lubricate.

2. Loosen gibs slightly (see Page 72).

3. Slightly loosen backlash setting (see Page 71).

4. Lubricate bedways.

5. Disengage half nut lever for manual feeding.

1. Check for debris, clean, and retighten.

2. Re-install cutting tool so no more than
length is sticking out of tool holder.

3. Adjust gibs at affected component (see Page 72).

4. Replace or resharpen cutting tool.

5. Use the recommended spindle speed and feed rate.

1. Re-align tailstock to headstock spindle centerline
(see Page 34).

replace jaws.

1

⁄3 of the total

-68-

Model G0773 (Mfd. Since 12/14)

Mill Operation

Symptom Possible Cause Possible Solution

Tool slips in spindle. 1. Tool is not fully drawn up into spindle taper.

2. Debris on tool or in spindle taper.

3. Taking too big of cut.

Breaking tools or
cutters.

Workpiece vibrates
or chatters during
operation.

Cross slide table is
hard to move.

Bad surface finish. 1. Spindle speed/feed rate is too fast.

1. Spindle speed/feed rate is too fast.

2. Cutting tool too small.

3. Cutting tool getting too hot.

4. Taking too big of a cut.

5. Spindle extended too far down.

1. Workpiece not secure.

2. Spindle speed/feed rate is too fast.

3. Spindle extended too far down.

1. Chips have loaded up on ways.

2. Ways are dry and need lubrication.

3. Gibs are too tight.

2. Using dull or incorrect cutting tool.

3. Wrong rotation of cutting tool.

4. Workpiece not secure.

5. Spindle extended too far down.

1. Tighten drawbar (Do not overtighten).

2. Clean collet and spindle taper.

3. Lessen depth of cut and allow chips to clear.

1. Set spindle speed correctly (Page 56) or use slower
feed rate.

2. Use larger cutting tool and slower feed rate.

3. Use coolant fluid or oil for appropriate application if
possible.

4. Lessen depth of cut and allow chips to clear.

5. Fully retract spindle and lower headstock. This
increases rigidity.

1. Properly clamp workpiece on table or in vise.

2. Set spindle speed correctly (Page 56) or use slower
feed rate.

3. Fully retract spindle and lower headstock. This
increases rigidity.

1. Frequently clean away chips that load up during
milling operations.

2. Lubricate ways (Page 64).

3. Adjust gibs (see Page 72

1. Set spindle speed correctly (Page 56) or use a
slower feed rate.

2. Sharpen cutting tool or select one that better suits
operation.

3. Check for proper cutting rotation for cutting tool.

4. Properly clamp workpiece on table or in vise.

5. Fully retract spindle and lower headstock. This
increases rigidity.

).

Model G0773 (Mfd. Since 12/14)

-69-

Tensioning &

Replacing V-Belts

V-belts stretch and wear with use, so it is impor­tant that tension is routinely checked and adjusted
as needed. Improperly tensioned V-belts will slip
or poorly transmit power from the motor. We rec­ommend checking the tension on a monthly basis
to ensure optimal power transmission. Replace
the V-belt if it becomes cracked, frayed, or glazed.
Keep belts and pulleys clear of exposure to oil,
grease, or cutting fluids that will cause them to
slip.

The V-belt is correctly tensioned when there

is approximately
with moderate pressure between the pulleys,
as shown in Figure 120.

Deflection

1

⁄8" deflection when pushed

Pulley

1

⁄8"

Pulley

Tool Needed Qty

Hex Wrench 4mm .............................................. 1

Tensioning V-Belts

1. DISCONNECT MACHINE FROM POWER!

2. Open end cover.

3. Loosen tensioner hex bolt (see Figure 119).

V-Belt

Tensioner

Figure 120. Correct V-belt deflection.

1

—If there is more than

tension until it is correct.

5. Close end cover.

⁄8" deflection, adjust

Replacing V-Belts

1. DISCONNECT MACHINE FROM POWER!

2. Open end cover.

3. Loosen tensioner bolt (see Figure 119) to

relieve tension on V-belt.

4. Carefully roll V-belt off of pulleys.

5. Install new V-belt, then tension as described
in Tensioning V-Belts.

Figure 119. Tensioner bolt and V-belt.

4. Pivot tensioner (see Figure 119) against

V-belt to increase belt tension, then re-tighten
tensioner hex bolt.

-70 -

Model G0773 (Mfd. Since 12/14)

Adjusting Backlash

Backlash is the amount of free play felt while
changing rotation directions with the handwheel.
This can be adjusted on the cross slide leadscrew.
Before beginning any adjustment, make sure all
associated components are cleaned and lubri­cated and locks are loose.

When adjusting backlash, tighten the components
enough to remove backlash, but not so much that
the components bind the leadscrew, making it
hard to turn. Overtightening will cause excessive
wear to the nut and leadscrew.

Adjusting Leadscrew

End Play

A small amount of end play is normal, however
after a long period of time, you may find that the
leadscrew develops excessive end play. This can
be removed with a simple adjustment of the nuts
at the end of the leadscrew.

Tools Needed Qty

Hex Wrench 6mm .............................................. 1

Open-End Wrench 19mm .................................. 1

To remove leadscrew end play:

1. DISCONNECT MACHINE FROM POWER!

Reducing backlash to less than 0.002" is
impractical and can lead to accelerated
wear in leadscrew and other components.
Avoid temptation to overtighten leadscrew
nut or set screw while adjusting.

Cross Slide

Tool Needed: Qty

Hex Wrench 4mm ............................................. 1

The cross slide backlash is adjusted by tightening
and loosening the set screw shown in Figure 121.

Set Screw

2. Loosen jam nut shown in Figure 122.

Leadscrew

End Bracket

Flat Washer

Figure 122. Leadscrew end play adjustments.

3. Using your fingers, tighten retaining nut until

it firmly pushes flat washer against end
bracket, then back retaining nut off

4. Hold retaining nut in position and tighten jam
nut against it until snug.

Retaining Nut

Jam Nut

1

⁄8 turn.

Figure 121. Example of cross slide backlash

adjustment.

Move the cross slide handwheel back and forth
while adjusting set screw until backlash is approx­imately 0.002"–0.003", as indicated on the gradu­ated dial.

Model G0773 (Mfd. Since 12/14)

-71-

Adjusting Gibs

The goal of adjusting the gib screws is to remove
sloppiness or "play" from the ways without over­adjusting them to the point where they become
stiff and difficult to move.

In general, loose gibs cause poor finishes and
tool chatter; however, over-tightened gibs cause
premature wear and make it difficult to turn the
handwheels.

The cross-slide and compound slide both use a
straight gib, which is adjusted with cap screws
and hex nuts along its length. The screws push
the gib in to create more contact with the slid­ing surfaces. The Z-axis ways use a tapered gib,
which is adjusted with screws on each end.

Adjusting Cross Slide & Compound
Slide Gibs

1. DISCONNECT MACHINE FROM POWER!

2. Loosen hex nuts on side of cross slide or

compound slide (see Figures 123).

The gib adjustment process usually requires some
trial-and-error. Repeat the process as necessary
until you find the best balance between loose and
stiff movement. Most machinists find that the ideal
gib adjustment is one where a small amount of
drag or resistance is present, yet the handwheels
are still somewhat easy to move.

Clean and lubricate the ways before beginning
any adjustments. Refer to Lubrication on Page

62 for instructions and lubricant specifications.

Tools Needed Qty

Open-End Wrench 10mm .................................. 1

Hex Wrench 3mm .............................................. 1

Flat Head Screwdriver #2 .................................. 1

Figure 123. Gib adjustment hex nuts and cap

screws.

3. Adjust all corresponding cap screws in small
and equal increments while testing move­ment of slide by rotating handwheel.

Note: Turn cap screws clockwise to tighten

the gib, or counterclockwise to loosen the gib.

4. When satisfied with gib adjustment, use hex
wrench to prevent set screws from moving,
then retighten hex nuts to secure settings.

5. Re-check movement of slide and, if neces­sary, repeat Steps 2–4.

-72-

Model G0773 (Mfd. Since 12/14)

Adjusting Half Nut

The rigidity of the half nut engagement is adjusted
by tightening or loosening the half nut gib screws.
Adjust the half nut if it feels too loose or too tight
when being engaged. Movement that is too stiff
will accelerate wear. Movement that is too slop­py will produce inaccurate turning or threading
results.

Tools Needed Qty

Open-End Wrench 7mm .................................... 1

Hex Wrench 3mm .............................................. 1

3. Loosen gib nuts and adjust screws in small,
even increments so one end of the gib
does not become tighter than the other (see
Figure 124).

Gib Nuts &

Screws

To adjust half nut:

1. DISCONNECT MACHINE FROM POWER!

2. Disengage half nut.

Figure 124. Half nut gib adjustment set screws.

4. Engage/disengage half nut several times and

notice how it feels. The adjustment is cor­rect when half nut firmly and easily engages
leadscrew while opening and closing.

5. Repeat Steps 3–4, if necessary, until satis­fied with feel of half nut engagement.

6. Re-tighten gib nuts to secure position of
adjustment screws.

Model G0773 (Mfd. Since 12/14)

-73 -

These pages are current at the time of printing. However, in the spirit of improvement, we may make chang­es to the electrical systems of future machines. Compare the manufacture date of your machine to the one

number and manufacture date of your

machine before calling. This information can be found on the main machine label.

machine

SECTION 9: WIRING

stated in this manual, and study this section carefully.

If there are differences between your machine and what is shown in this section, call Technical Support at
[phone] for assistance BEFORE making any changes to the wiring on your machine. An updated
wiring diagram may be available. Note: Please gather the serial

Wiring Safety Instructions

SHOCK HAZARD. Working on wiring that is con-

nected to a power source is extremely dangerous.
Touching electrified parts will result in personal
injury including but not limited to severe burns,
electrocution, or death. Disconnect the power
from the machine before servicing electrical com­ponents!

MODIFICATIONS. Modifying the wiring beyond
what is shown in the diagram may lead to unpre­dictable results, including serious injury or fire.
This includes the installation of unapproved after­market parts.

WIRE CONNECTIONS. All connections must
be tight to prevent wires from loosening during
machine operation. Double-check all wires dis­connected or connected during any wiring task to
ensure tight connections.

CIRCUIT REQUIREMENTS. You MUST follow
the requirements at the beginning of this manual
when connecting your machine to a power source.

WIRE/COMPONENT DAMAGE. Damaged wires
or components increase the risk of serious per­sonal injury, fire, or machine damage. If you notice
that any wires or components are damaged while
performing a wiring task, replace those wires or
components.

MOTOR WIRING. The motor wiring shown in
these diagrams is current at the time of printing
but may not match your machine. If you find this
to be the case, use the wiring diagram inside the
motor junction box.

CAPACITORS/INVERTERS. Some capacitors
and power inverters store an electrical charge for
up to 10 minutes after being disconnected from
the power source. To reduce the risk of being
shocked, wait at least this long before working on
capacitors.

EXPERIENCING DIFFICULTIES. If you are expe­riencing difficulties understanding the information
included in this section, contact our Technical
Support at [phone].

The photos and diagrams
included in this section are
best viewed in color. You
can view these pages in
color at www.grizzly.com.

-74 -

Model G0773 (Mfd. Since 12/14)

Wiring Overview

Emergency Stop

Mill

Safety Guard

Limit Switch

Circuit Breaker

(Back Panel)

Chint NB1-63 D16

400V 16A

Limit Switches

(Inside)

Mill Rear

Electrical Box

Selector Switch

Lathe/Mill

BLDC Mill Motor

230V 2.8A

5

⁄8 HP 5000 RPM

LED Fault

Indicator

Halogen Power

Indicator

Variable-Speed Dial

Lathe Motor

(Inside)

110V 11.6A

Single-Phase

1 HP 1700 RPM

Model G0773 (Mfd. Since 12/14)

Spindle Direction

Switch

Emergency Stop

Halogen Power

Indicator

READ ELECTRICAL SAFETY

ON PAGE 74!

-75 -

Wiring Diagram

Rd

Yl

Br

Br

Rd

Yl

Or

Mill Speed

Control

Circuit Board

Pu

Rd

Yl

Or

Gn

Br

Wt

Gy

CN103

XMT_CON

ZM 3405

N U V M

L

F1

15AL
250V

Rd

M

Pu

V
U
N

L

Br

Fault Indicator

Pu

Rd

Yl

Or

Gn

Br

Wt

Gy

DRO

Connector

LED (Yellow)

Rd

CN3

ZZQ

CN2

Rd

Or

Br

X-1

101225A

Tq

Pk

CN4

CN1

Gy

Halogen

Power Indicator

Halogen

Lamp

Power Indicator

Lamp (Green)

232413

14

A1

KEDU

KJD17B

120V

Fuse

F10al250V

Mill Switch Box

(Viewed from Front)

Br

Or

Rd

Pu

Mill/Drill

230V 2.8A

5000 RPM

KEDU QKS7

AC-15 250VAC

Mill Shield

Limit Switch

BLDC

Motor

5/8 HP

Mill Electrical Box

(Viewed from Rear)

Neutral

Hot

Ground

Motor Cabinet

(Viewed from Rear)

Circuit Breaker

Chint NB1-63 D16

400V 16A

110V

MOTOR

Start

Capacitor

300MFD
125VAC

Run

Capacitor

25MFD

450VAC

110 VAC
5-15 Plug

N

L

ON

OFFONOFF

L

Bk

Bk

Bk

GND

GND

KEDU QKS7

GND

GND

GND

N

Gn

V1

U1

GND

3

W2

Z2

Wt

Br

AC-15 250VAC

Change Gear Cabinet

1

7

6

7

6

5

5

5

8

CC

2

1

3

4

KEDU ZH-B

5E4

(Top)

V1

U2

U1

Z2

CC

5

6

7

8

KEDU ZH-B

5E4

(Bottom)

5

6

A1

Bk

U2

KEDU

KJD17B

120V

KEDU QKS7

Limit Switch

Halogen

Power Indicator

Lamp (Green)

2

23

24

14

13

4

Br

3

1

L

N

2

B1

A1

4

AC-15 250VAC

Lathe Chuck Guard

Limit Switch

3

1

L

N

N

1

2

1

L

KEDU

ZHHCZA

EN609471

(Top)

Headstock Casting

(Viewed from Front)

B2

3

A2

KEDU

ZHHCZA

EN609471

(Bottom)

8

-76 -

READ ELECTRICAL SAFETY

ON PAGE 74!

Model G0773 (Mfd. Since 12/14)

Wiring Photos

Figure 125. Control panel. Figure 128. Headstock casting.

Figure 126. Mill rear electrical box and switch

box.

Figure 127. Mill/drill motor.

Model G0773 (Mfd. Since 12/14)

Figure 129. Back panel.

Figure 130. Start and run capacitors.

READ ELECTRICAL SAFETY

ON PAGE 74!

-77-

SECTION 10: PARTS

Please Note: We do our best to stock replacement parts whenever possible, but we cannot guarantee that all parts shown here

are available for purchase. Call (800) 523 - 4777 or visit our online parts store at www.grizzly.com to check for availability.

Accessories

24

23-2

23-1

24-1

23-3

23

2

3

4

5

6

12

17

16

18

26

22

7

8

9

20

15

13

10

11

REF PART # DESCRIPTION REF PART # DESCRIPTION

2 P07730002 HEX WRENCH 3MM 16 P07730016 CHANGE GEAR 50T
3 P07730003 HEX WRENCH 4MM 17 P07730017 CHANGE GEAR 35T
4 P07730004 HEX WRENCH 5MM 18 P07730018 CHANGE GEAR 60T
5 P07730005 HEX WRENCH 6MM 20 P07730020 WRENCH 36MM OPEN-END
6 P07730006 HEX WRENCH 8MM 22 P07730022 CAP SCREW M6-1 X 10
7 P07730007 WRENCH 8 X 10MM OPEN-ENDS 23 P07730023 3-JAW CHUCK 6"
8 P07730008 WRENCH 12 X 14MM OPEN-ENDS 23-1 P07730023-1 CHUCK 6" D1-5
9 P07730009 WRENCH 17 X 19MM OPEN-ENDS 23-2 P07730023-2 EXTERNAL JAW SET
10 P07730010 DEAD CENTER MT#3 23-3 P07730023-3 LATHE CHUCK KEY
11 P07730011 DEAD CENTER MT#5 24 P07730024 DRILL CHUCK B-16 1-13MM
12 P07730012 BOTTLE FOR OIL 24-1 P07730025 DRILL CHUCK KEY 5/16" AH 11T SD-5/8
13 P07730013 SPANNER WRENCH 45-52MM HOOK-TYPE 26 P07730026 CAMLOCK STUD D1-5
15 P07730015 SPANNER WRENCH 63MM PIN-TYPE

-78 -

Model G0773 (Mfd. Since 12/14)

Lathe Bed

101

122

119

125

124

104

118

119

122

119

112

105

121

125

122

102
103

111

110

113

120

108

114

106

109

115

108

107

117

113

124

116

REF PART # DESCRIPTION REF PART # DESCRIPTION

101 P07730101 SPLASH GUARD 113 P07730113 FLAT WASHER 10MM
102 P07730102 CAP SCREW M8-1.25 X 12 114 P07730114 DOWEL PIN 8 X 30
103 P07730103 FLAT WASHER 8MM 115 P07730115 BALL OILER 6MM PRESS-IN
104 P07730104 LATHE BED 116 P07730116 CAP SCREW M8-1.25 X 45
105 P07730105 LEADSCREW SHIELD 117 P07730117 HEX NUT M10-1.25 THIN
106 P07730106 LEADSCREW 118 P07730118 KEY 4 X 4 X 28
107 P07730107 HEX NUT M12-1.5 THIN 119 P07730119 CAP SCREW M6-1 X 12
108 P07730108 FLAT WASHER 12MM 120 P07730120 DOWEL PIN 8 X 16
109 P07730109 LEADSCREW BRACKET 121 P07730121 BED RACK
110 P07730110 PROTECTIVE SUPPORT 122 P07730122 FLAT WASHER 6MM
111 P07730111 CAP SCREW M4-.7 X 8 124 P07730124 LOCK WASHER 6MM
112 P07730112 FEED ROD 125 P07730125 HEX NUT M6-1

Model G0773 (Mfd. Since 12/14)

-79 -

Headstock

203

230

231

204

202

233

204

209

229

226

215

228

225

227

208

224

223

222

201

209

221

237

238

226

220

219

218

216

240

217

206

242

204

205

207

279

278

226

280

227

245

236

228

251

229

281

282

230

245

283

243

265

284

226

285

286

287

247

288

289

290

248

291

292

249

293

295

294

299

298

297
296

-80-

Model G0773 (Mfd. Since 12/14)

Headstock Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION

201 P07730201 HEADSTOCK COVER 242 P07730242 ROTARY SWITCH KEDU ZH-HC-2 1/0/2
202 P07730202 CAP SCREW M5-.8 X 12 243 P07730243 TERMINAL BLOCK 12P
203 P07730203 FLAT HD SCR M5-.8 X 30 245 P07730245 CAP SCREW M10-1.5 X 35
204 P07730204 FLAT WASHER 4MM 247 P07730247 HEADSTOCK SWITCH PANEL
205 P07730205 FLAT HD SCR M4-.7 X 8 248 P07730248 SWITCH PANEL FACEPLATE
206 P07730206 LATHE CHUCK GUARD 249 P07730249 TAP SCREW M4 X 16
207 P07730207 LATHE CHUCK GUARD WINDOW 251 P07730251 FLAT HD SCR M5-.8 X 20
208 P07730208 CAP SCREW M4-.7 X 16 265 P07730265 PHLP HD SCR M2.5-.45 X 14
209 P07730209 HEX NUT M4-.7 278 P07730278 ON/OFF SWITCH MOUNTING PLATE
215 P07730215 HEX NUT M5-.8 279 P07730279 ON/OFF SWITCH KEDU KJD17B 120V
216 P07730216 COMPRESSION SPRING 280 P07730280 FLAT HD SCR M4-.7 X 12
217 P07730217 CAP SCREW M5-.8 X 50 281 P07730281 SPINDLE LOCK NUT
218 P07730218 LATHE CHUCK GUARD MOUNTING BRACKET 282 P07730282 SPINDLE PULLEY
219 P07730219 LATHE CHUCK GUARD HARD STOP 283 P07730283 SPINDLE SPACER
220 P07730220 LATHE CHUCK GUARD SHIM 284 P07730284 SPINDLE GEAR
221 P07730221 LATHE CHUCK GUARD BRACE 285 P07730285 SPINDLE SPACER
222 P07730222 EXT TOOTH WASHER 4MM 286 P07730286 OIL SEAL
223 P07730223 FLAT WASHER 4MM 287 P07730287 BALL BEARING 6010ZZ
224 P07730224 LOCK WASHER 4MM 288 P07730288 INT RETAINING RING 80MM
225 P07730225 GROUND LUG 289 P07730289 OIL SEAL
226 P07730226 PHLP HD SCR M4-.7 X 12 290 P07730290 TAPERED ROLLER BEARING 32011
227 P07730227 PIN SHAFT 291 P07730291 OIL SEAL
228 P07730228 EXT RETAINING RING 8MM 292 P07730292 KEY 6 X 6 X 12
229 P07730229 CAP SCREW M4-.7 X 30 293 P07730293 KEY 6 X 6 X 8
230 P07730230 LIMIT SWITCH KEDU QKS7 AC15 250V 294 P07730294 SPINDLE
231 P07730231 CAP SCREW M4-.7 X 20 295 P07730295 SPINDLE CAM
233 P07730233 MICRO SWITCH MOUNTING PLATE 296 P07730296 REGISTER PIN
236 P07730236 HEADSTOCK CASTING 297 P07730297 COMPRESSION SPRING
237 P07730237 FLAT HD CAP SCR M5-.8 X 12 298 P07730298 LOCK WASHER 8MM
238 P07730238 ROTARY SWITCH KEDU ZH-B FOR/OFF/REV 299 P07730299 CAP SCREW M8-1.25 X 14
240 P07730240 POWER INDICATOR LIGHT ZD10

Model G0773 (Mfd. Since 12/14)

-81-

Tailstock

336

339

305

333

334

337

309

326

325

301

310

306

311

310

341

303

338

346

304

342

321

343

332

320

344

317

318

319

340

345

325

323

REF PART # DESCRIPTION REF PART # DESCRIPTION

301 P07730301 QUILL LOCK HANDLE M8-1.25 X 10 326 P07730326 TAILSTOCK T-NUT 30 X 16 X 32 M8-1.25
303 P07730303 TAILSTOCK LOCK HANDLE M10-1.5 X 14 332 P07730332 ROLL PIN 5 X 26
304 P07730304 TAILSTOCK LOCK HANDLE KNOB M10-1.5 333 P07730333 FLAT WASHER 5MM
305 P07730305 QUILL LOCK HANDLE BASE M8-1.25 X 30 334 P07730334 TUBULAR CLAMP M8-1.25
306 P07730306 TAILSTOCK HANDLE BASE M12-1.75 336 P07730336 TAILSTOCK QUILL
309 P07730309 T-TAP FLAT KEY 12 X 12 X 7 337 P07730337 TAILSTOCK BODY
310 P07730310 BALL OILER 6MM PRESS-IN 338 P07730338 SET SCREW M8-1.25 X 16 DOG-PT
311 P07730311 FLAT WASHER 12MM 339 P07730339 SQ HD BOLT M12-1.75 X 230
317 P07730317 QUILL HANDWHEEL HANDLE 340 P07730340 TAILSTOCK BASE
318 P07730318 SHOULDER SCREW M6-1 X 10, 10 X 45 341 P07730341 THRUST BEARING 51102
319 P07730319 HANDWHEEL 100MM DIA DISHED W/HANDLE 342 P07730342 TAILSTOCK END COVER
320 P07730320 HANDWHEEL CURVED PLATE SPRING 343 P07730343 CAP SCREW M8-1.25 X 16
321 P07730321 GRADUATED COLLAR 344 P07730344 TAILSTOCK LEADSCREW
323 P07730323 TAILSTOCK CLAMP PLATE 345 P07730345 CAP SCREW M6-1 X 25
325 P07730325 CAP SCREW M8-1.25 X 35 346 P07730346 HARD STOP

-82-

Model G0773 (Mfd. Since 12/14)

Tool Post

428

427

408

402

403

404

401

405

406

411

407

424

412

413

414

415

416

429

409

410

430

426

425

418

423

422

REF PART # DESCRIPTION REF PART # DESCRIPTION

401 P07730401 TOOL POST LEVER M10-1.5 416 P07730416 HANDWHEEL HANDLE M6-1 X 8
402 P07730402 TOOL POST LEVER BASE M12-1.75 418 P07730418 CAP SCREW M8-1.25 X 16
403 P07730403 TOOL POST LEVER SPACER 419 P07730419 COMPOUND REST GIB
404 P07730404 SQ HD BOLT M8-1.25 X 30 420 P07730420 SET SCREW M6-1 X 16 DOG-PT
405 P07730405 TURRET TOOL HOLDER 421 P07730421 COMPOUND REST BASE
406 P07730406 BALL OILER 6MM PRESS-IN 422 P07730422 SET SCREW M6-1 X 20 CONE-PT
407 P07730407 COMPOUND REST 423 P07730423 HEX NUT M6-1 THIN
408 P07730408 SET SCREW M6-1 X 10 CONE-PT 424 P07730424 LEADSCREW COLLAR 6MM
409 P07730409 COMPOUND REST LEADSCREW NUT 425 P07730425 TOOL POST SHAFT M12-1.75
410 P07730410 COMPOUND REST LEADSCREW 426 P07730426 COMPRESSION SPRING
411 P07730411 TOOL POST LEVER KNOB M10-1.5 427 P07730427 SET SCREW M4-.7 X 16 LONG DOG-PT
412 P07730412 LEADSCREW SUPPORT 428 P07730428 HEX NUT M4-.7 THIN
413 P07730413 CAP SCREW M6-1 X 16 429 P07730429 LOCKING PIN
414 P07730414 GRADUATED COLLAR 430 P07730430 HEX NUT M8-1.25
415 P07730415 HANDWHEEL 68MM DIA FLAT W/HANDLE

421

419

420

Model G0773 (Mfd. Since 12/14)

-83-

Cross Slide

518

533

532

537

534

517

535

536

504

519

530

543

529

531

527

528

519

529

526

544

510

501

549

503

527

517

519

505

506

537

507

518

520

519

508

509

507

511

512

513

514

515

516

518

518

539

541

542

543

544

540

545

538

547

546

522

523

524

525

548

-84-

Model G0773 (Mfd. Since 12/14)

Cross Slide Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION

501 P07730501 CAP SCREW M8-1.25 X 20 527 P07730527 CAP SCREW M8-1.25 X 40
503 P07730503 T-SLOT NUT 10MM, M8-1.25 528 P07730528 FLAT WASHER 8MM
504 P07730504 CROSS SLIDE CASTING 529 P07730529 CAP SCREW M8-1.25 X 35
505 P07730505 ROLL PIN 3 X 18 530 P07730530 T-SLOT NUT M8-1.25, ROUNDED
506 P07730506 GEAR 22T 531 P07730531 COMPOUND REST MOUNTING POST
507 P07730507 THRUST BEARING 51100 532 P07730532 CROSS SLIDE GIB
508 P07730508 LEADSCREW HUB 533 P07730533 HEX NUT M5-.8
509 P07730509 CAP SCREW M6-1 X 35 534 P07730534 CAP SCREW M6-1 X 18
510 P07730510 SET SCREW M8-1.25 X 16 CONE-PT 535 P07730535 SET SCREW M5-.8 X 30 CONE-PT
511 P07730511 GRADUATED COLLAR 536 P07730536 SET SCREW M8-1.25 X 8
512 P07730512 HANDWHEEL CURVED PLATE SPRING 537 P07730537 STRAIGHT WAY WIPER COVER
513 P07730513 HANDWHEEL 68MM DIA FLAT W/HANDLE 538 P07730538 SADDLE CASTING
514 P07730514 HEX NUT M10-1.5 539 P07730539 V-WAY WIPER COVER, LONG
515 P07730515 HANDWHEEL HANDLE 50MM 540 P07730540 V-WAY WIPER, LONG
516 P07730516 SHOULDER SCREW M6-1 X 8, 8 X 45 541 P07730541 SADDLE GIB
517 P07730517 STRAIGHT WAY WIPER 542 P07730542 SADDLE CLAMP SLIDE
518 P07730518 PHLP HD SCR M4-.7 X 12 543 P07730543 FLAT WASHER 6MM
519 P07730519 BALL OILER 6MM PRESS-IN 544 P07730544 CAP SCREW M6-1 X 20
520 P07730520 V-WAY WIPER COVER 545 P07730545 SET SCREW M4-.7 X 16 LONG DOG-PT
522 P07730522 V-WAY WIPER 546 P07730546 HEX NUT M4-.7 THIN
523 P07730523 CROSS SLIDE CLAMP, LARGE 547 P07730547 CROSS SLIDE CLAMP, MEDIUM
524 P07730524 CROSS SLIDE CLAMP, SMALL 548 P07730548 SADDLE LEADSCREW NUT
525 P07730525 CROSS SLIDE LEADSCREW 549 P07730549 COMPOUND REST MOUNTING PLATE
526 P07730526 CAP SCREW M8-1.25 X 45

Model G0773 (Mfd. Since 12/14)

-85-

658

666

667

658

659

660

661

662

663

664

668

642

643

644

671
672
673
674

613

669

670

635

637

646

636

638

609

634

640

Apron

604

641

645

641

647

648

649

639

606

650

629

647

651

655

601

657

652

656

653

654

607

602

603

604

605

603

608

616

617

622

641

614

610

618

623

615

611

625

624

619

626

612

620

613

621

629

630

631

632

627

633

628

-86-

Model G0773 (Mfd. Since 12/14)

Apron Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION

601 P07730601 CAP SCREW M5-.8 X 35 638 P07730638 SHAFT
602 P07730602 HEX NUT M5-.8 THIN 639 P07730639 HANDWHEEL 122MM DIA DISHED
603 P07730603 HALF NUT 640 P07730640 SET SCREW M6-1 X 6
604 P07730604 SET SCREW M8-1.25 X 10 641 P07730641 SET SCREW M6-1 X 6 CONE-PT
605 P07730605 CARRIAGE CLAMP 642 P07730642 GEARED SHAFT
606 P07730606 FENDER WASHER 6MM 643 P07730643 GEAR 67T
607 P07730607 HEX NUT M5-.8 644 P07730644 CARRIAGE SUPPORT, LEFT
608 P07730608 CAP SCREW M5-.8 X 16 645 P07730645 SET SCREW M6-1 X 8 CONE-PT
609 P07730609 ACORN NUT M6-1 646 P07730646 CARRIAGE CASTING
610 P07730610 RETAINING COLLAR 647 P07730647 EXT RETAINING RING 14MM
611 P07730611 WORM GEAR 648 P07730648 GEAR 60T
612 P07730612 CARRIAGE SUPPORT, RIGHT 649 P07730649 KEY 5 X 5 X 16
613 P07730613 CAP SCREW M5-.8 X 10 650 P07730650 HANDWHEEL HANDLE 75MM
614 P07730614 SET SCREW M6-1 X 12 DOG-PT 651 P07730651 KEY 4 X 4 X 16
615 P07730615 SET SCREW M6-1 X 8 652 P07730652 HANDWHEEL SHAFT
616 P07730616 ROCKER ARM 653 P07730653 GRADUATED COLLAR
617 P07730617 ROCKER SHAFT 654 P07730654 HANDWHEEL CURVED PLATE SPRING
618 P07730618 EXT RETAINING RING 35MM 655 P07730655 SHOULDER SCREW M8-1.25 X 10, 9 X 70
619 P07730619 FEED SELECTOR CAM SHAFT 656 P07730656 SET SCREW M6-1 X 12
620 P07730620 FEED SELECTOR SHAFT MOUNT 657 P07730657 COMPRESSION SPRING
621 P07730621 CAP SCREW M6-1 X 30 658 P07730658 PHLP HD SCR M4-.7 X 8
622 P07730622 EXT RETAINING RING 15MM 659 P07730659 FLAT WASHER 4MM
623 P07730623 BUSHING 660 P07730660 DIAL PIN
624 P07730624 GEARED SHAFT 661 P07730661 THREAD DIAL
625 P07730625 DOWEL PIN 5 X 12 662 P07730662 COMPRESSION SPRING
626 P07730626 DOWEL PIN 5 X 16 663 P07730663 E-CLIP 9MM
627 P07730627 HALF NUT CAM 664 P07730664 THREAD DIAL SHAFT
628 P07730628 HALF NUT LEVER M8-1.25 X 8 666 P07730666 THREAD DIAL GUARD
629 P07730629 STEEL BALL 6MM 667 P07730667 CAP SCREW M5-.8 X 45
630 P07730630 COMPRESSION SPRING 668 P07730668 FLAT WASHER 5MM
631 P07730631 FEED CONTROL SHAFT M12-1.75 X 18 669 P07730669 THREAD DIAL CASTING
632 P07730632 COMPRESSION SPRING 670 P07730670 KEY 4 X 4 X 8
633 P07730633 FEED CONTROL SHAFT KNOB M12-1.75 671 P07730671 GEAR 28T
634 P07730634 CAP SCREW M6-1 X 16 672 P07730672 LOCK WASHER 4MM
635 P07730635 GEAR 81T 673 P07730673 FENDER WASHER 4MM
636 P07730636 FLAT WASHER 6MM 674 P07730674 PHLP HD SCR M4-.7 X 10
637 P07730637 GEAR 22T

Model G0773 (Mfd. Since 12/14)

-87-

701

772

701

741

743

744

702

703

717

745

728

741

741

736

746

705

719

706

720

735

Gearbox

735

730

748

708

722

738

754

749

707

721

741

742

709

723

739

767

710

724

750

711

723

740

751

726

752

712

727

701

711

728

755

714

761

756

729

715

701

757

731

716

732

758

733

734

770

760

759

768

763

770

769

764

771

765

766

773

768

762

753

761

725

718

704

747

737

762

-88-

Model G0773 (Mfd. Since 12/14)

Gearbox Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION

701 P07730701 CAP SCREW M5-.8 X 12 738 P07730738 COMBO GEAR 13T/40T
702 P07730702 OIL SEAL 22 X 35 X 7 739 P07730739 O-RING 12.5 X 1.8
703 P07730703 GASKET HOUSING 740 P07730740 SHAFT
704 P07730704 INDICATOR PLATE 741 P07730741 SET SCREW M5-.8 X 8 CONE-PT
705 P07730705 KEY 4 X 4 X 16 742 P07730742 SIGHT GLASS M16-2 X 1.5
706 P07730706 SHAFT 743 P07730743 SHAFT END CAP
707 P07730707 KEY 5 X 5 X 80 744 P07730744 SPACER, SMALL
708 P07730708 SPACER 745 P07730745 COMBO GEAR 24T/16T/38T/35T/24T
709 P07730709 GEAR 30T 746 P07730746 SHAFT
710 P07730710 GEAR 28T 747 P07730747 STEEL BALL 5MM
711 P07730711 SPACER 748 P07730748 COMBO GEAR 24T/16T/38T
712 P07730712 GEAR 25T 749 P07730749 GEAR 42T
714 P07730714 GEAR 24T 750 P07730750 SPACER, LARGE
715 P07730715 GEAR 28T 751 P07730751 OIL SEAL 25 X 32 X 4
716 P07730716 EXT RETAINING RING 16MM 752 P07730752 GASKET HOUSING
717 P07730717 GEARBOX CASTING 753 P07730753 SELECTOR KNOB
718 P07730718 KEY 5 X 5 X 12 754 P07730754 CLUTCH COUPLER
719 P07730719 SPACER 755 P07730755 O-RING 15 X 1.8
720 P07730720 SHAFT 756 P07730756 CLUTCH, DRIVE SIDE
721 P07730721 KEY 5 X 5 X 60 757 P07730757 CLUTCH, FOLLOW SIDE
722 P07730722 GEAR 30T 758 P07730758 CLUTCH HOUSING
723 P07730723 SPACER 759 P07730759 COMPRESSION SPRING
724 P07730724 GEAR 19T 760 P07730760 FEED ROD COUPLING
725 P07730725 SELECTOR KNOB SHAFT 761 P07730761 O-RING 8.75 X 1
726 P07730726 GEAR 40T 762 P07730762 SET SCREW M6-1 X 12 CONE-PT
727 P07730727 GEAR 14T 763 P07730763 RETAINING PIN
728 P07730728 O-RING 30 X 2.65 764 P07730764 CAP SCREW M8-1.25 X 80
729 P07730729 SHAFT HUB 765 P07730765 KEY 5 X 5 X 50
730 P07730730 EXT RETAINING RING 10MM 766 P07730766 KEY 5 X 5 X 32
731 P07730731 OIL SEAL 18 X 30 X 7 767 P07730767 ROLL PIN 4 X 24
732 P07730732 LEADSCREW SUPPORT 768 P07730768 FLT HD SCR M3-.5 X 6
733 P07730733 CAP SCREW M4-.7 X 8 769 P07730769 DRIVING LEVER
734 P07730734 CONNECTING COLLAR 770 P07730770 ROLL PIN 4 X 18
735 P07730735 OIL PLUG M16-2 X 1.5 771 P07730771 GEARBOX COVER
736 P07730736 O-RING 16 X 2.65 772 P07730772 CAP SCREW M5-.8 X 30
737 P07730737 COMPRESSION SPRING 0.7 X 4 X 25 773 P07730773 GEARBOX FACEPLATE

Model G0773 (Mfd. Since 12/14)

-89-

859

Change Gears

801

802

811

813

812

806

807

807

808

808

856

810

803

854

804

805

845

851

816

817

818

819

826

838

820

836

827

839

856

821

828

842

855

837

810

829

840

823

830

824

841

846

831

811

825

812

843

832

844

847

833

849

848

850

834

835

841

845

851

857

851

853

845

-90-

Model G0773 (Mfd. Since 12/14)

Change Gears Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION

801 P07730801 PHLP HD SCR M4-.7 X 10 832 P07730832 GEAR 91T
802 P07730802 FLAT WASHER 4MM 833 P07730833 END GEAR SUPPORT SHAFT M30-1.5
803 P07730803 HEX NUT M4-.7 834 P07730834 FENDER WASHER 10MM
804 P07730804 CHANGE GEAR ENCLOSURE HINGE 835 P07730835 SQUARE NUT M10-1.5
805 P07730805 CHANGE GEAR ENCLOSURE MOUNT 836 P07730836 BALL OILER 6MM PRESS-IN
806 P07730806 GREASE FITTING 1/8PT 65-DEG 837 P07730837 COMPRESSION SPRING
807 P07730807 SHAFT 838 P07730838 E-CLIP 12MM
808 P07730808 BUSHING 839 P07730839 HEX NUT M12-1.75 THIN
810 P07730810 SPACER 840 P07730840 LOCKING PIN
811 P07730811 CAP SCREW M8-1.25 X 25 841 P07730841 FLAT WASHER 12MM
812 P07730812 FLAT WASHER 8MM 842 P07730842 BUSHING
813 P07730813 SET SCREW M5-.8 X 10 CONE-PT 843 P07730843 ROLL PIN 3 X 30
816 P07730816 PHLP HD SCR M5-.8 X 10 844 P07730844 CHANGE GEAR CABINET KNOB
817 P07730817 ACCESS PORT COVER 845 P07730845 FLAT WASHER 6MM
818 P07730818 CAP SCREW M6-1 X 14 846 P07730846 SUPPORT ARM HANDLE M5-.8 X 8
819 P07730819 FENDER WASHER 6MM 847 P07730847 FENDER WASHER 8MM
820 P07730820 KEY 4 X 4 X 22 848 P07730848 SPACER
821 P07730821 GEAR 30T 849 P07730849 GEAR 90T
823 P07730823 SPACER 850 P07730850 CAP SCREW M12-1.75 X 45
824 P07730824 UPPER GEAR SUPPORT SHAFT 851 P07730851 CAP SCREW M6-1 X 12
825 P07730825 UPPER GEAR AXLE 853 P07730853 SPACER
826 P07730826 HEX NUT M6-1 854 P07730854 UPPER SUPPORT ARM
827 P07730827 HEX BOLT M6-1 X 35 855 P07730855 GEAR 65T
828 P07730828 END GEAR AXLE M10-1.5 X 19 856 P07730856 GEAR 48T
829 P07730829 KEY 8 X 7 X 14 857 P07730857 END GEAR SUPPORT ARM
830 P07730830 SPANNER NUT M30-1.5 859 P07730859 CHANGE GEAR CABINET DOOR
831 P07730831 GEAR 86T

Model G0773 (Mfd. Since 12/14)

-91-

Motor & Drive

929

908

930

909

931

910

932

936

921

933

932

922

934

923

929

911

913

924

912

925

937

970

901

902

925

926

938

903

927

904

939

905

928

927

940

943

906

941

944

914

907

915

916

917

918

935

920

919

969

947

948

949

950

945

946

945

935-1

935-2

935-6

935-4

935-7

935-3

935-8

935-5

935-9

-92-

Model G0773 (Mfd. Since 12/14)

Motor & Drive Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION

901 P07730901 POWER CORD 16G 3W 72" 5-15P 931 P07730931 TENSIONER PULLEY MANDREL
902 P07730902 STRAIN RELIEF M12-1.75 TYPE-3 932 P07730932 BALL BEARING 6001-2RS
903 P07730903 PHLP HD SCR M4-.7 X 8 933 P07730933 SPACER
904 P07730904 MOTOR ENCLOSURE COVER, BACK 934 P07730934 INT RETAINING RING 28MM
905 P07730905 CIRCUIT BREAKER CHINT NB1-63 D16 400V 935 P07730935 MOTOR 1HP 110V 1-PH
906 P07730906 FLAT HD SCR M4-.7 X 8 935-1 P07730935-1 MOTOR FAN COVER
907 P07730907 DIN RAIL 935-2 P07730935-2 MOTOR FAN
908 P07730908 BALL OILER 6MM PRESS-IN 935-3 P07730935-3 S CAPACITOR 150M 250V 1-5/8 X 3-1/8
909 P07730909 EXT RETAINING RING 13MM 935-4 P07730935-4 R CAPACITOR 20M 450V 1-1/2 X 2-3/4
910 P07730910 TIMING BELT PULLEY 935-5 P07730935-5 MOTOR JUNCTION BOX
911 P07730911 TIMING BELT PULLEY SHAFT M12-1.5 X 30 935-6 P07730935-6 CONTACT PLATE
912 P07730912 FENDER WASHER 12MM 935-7 P07730935-7 CENTRIFUGAL SWITCH
913 P07730913 TIMING BELT 1.5 X 15 X 124 935-8 P07730935-8 BALL BEARING 6204-2RS
914 P07730914 CAP SCREW M5-.8 X 12 935-9 P07730935-9 BALL BEARING 6204-2RS
915 P07730915 MOTOR ENCLOSURE COVER, TOP 936 P07730936 TENSIONER SUPPORT ARM SHAFT
916 P07730916 FLAT HD SCR M3-.5 X 10 937 P07730937 SPACER
917 P07730917 SOCKET IEC 320 C14 110V 938 P07730938 FLAT WASHER 10MM
918 P07730918 HEX NUT M3-.5 939 P07730939 HEX NUT M10-1.5
919 P07730919 MOUNTING BRACKET 940 P07730940 FENDER WASHER 12MM
920 P07730920 CAP SCREW M4-.7 X 8 941 P07730941 CIRCUIT BREAKER MOUNTING PLATE
921 P07730921 CAP SCREW M8-1.25 X 25 943 P07730943 CAP SCREW M8-1.25 X 20
922 P07730922 FLAT WASHER 8MM 944 P07730944 FENDER WASHER 8MM
923 P07730923 TENSIONER SUPPORT ARM 945 P07730945 SPACER
924 P07730924 SPACER 946 P07730946 MOTOR TIMING BELT PULLEY
925 P07730925 CAP SCREW M10-1.5 X 40 947 P07730947 CAP SCREW M6-1 X 16
926 P07730926 TIMING BELT SUPPORT ARM 948 P07730948 FENDER WASHER 6MM
927 P07730927 SPACER 949 P07730949 MOTOR V-BELT PULLEY
928 P07730928 HEX NUT M12-1.75 THIN 950 P07730950 KEY 5 X 5 X 50
929 P07730929 EXT RETAINING RING 12MM 969 P07730969 MOTOR ENCLOSURE
930 P07730930 TENSIONER PULLEY 970 P07730970 V-BELT 10X838

Model G0773 (Mfd. Since 12/14)

-93-

1065

1066

1004

1071

1157

1166
1167
1168
1169

1170

1171

1172

1174
1175

1064

1063

1061

1148

1149

1176

1062

1041

1040

1082

1083

1164
1165

1057

1058

1055

1031
1045
1044
1043

1150

1147

1146

1145-1

1060

1028

1145

1156

1178

1179

1180

1056

1094

1092
1090

1140
1088

1089

1173

1058

1059

1028

1046

1093

1091

1160

1081

1099

1177

1081

1085

1182
1183
1181

1053
1054

1028

1096

1048

1047
1042

Mill

1095

1185
1151

1083
1082

1009

1138

1084

1080

1052

1046
1050

1049

1074

1104

1136

1051

1039
1014

1010

1097
1098
1100

1010

1015

1103

1133

1137

1075

1101
1102

1106

1129

1130

1135

1105

1130

1132

1134

1162

1184

1073

1072

1068

1015

1131

1128

1176

1158

1159

1070

1069

1107

1114

1113

1078

1067

1014
1018

1115

1126

1127

1158

1108

1116

1142

1184

1076

1117

1118

1141

1125

1122

1078

1077

1079

1123

1124

1143

1142-1

1120

1119

1121

1149

-94-

1153
1154

1155

1018

1045

1044

1043

1152

Model G0773 (Mfd. Since 12/14)

Mill Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION

1004 P07731004 FLAT WASHER 8MM 1084 P07731084 SPINDLE R-8
1009 P07731009 HANDWHEEL CURVED PLATE SPRING 1085 P07731085 KEY 6 X 6 X 18
1010 P07731010 CAP SCREW M6-1 X 12 1088 P07731088 MILL SWITCH BOX
1014 P07731014 SET SCREW M6-1 X 20 DOG-PT 1089 P07731089 PHLP HD SCR M5-.8 X 8
1015 P07731015 HEX NUT M6-1 THIN 1090 P07731090 SPINDLE PULLEY
1018 P07731018 LOCKING HANDLE 1091 P07731091 RETAINING COLLAR
1028 P07731028 RIVET 2 X 3 FLUTED 1092 P07731092 SPANNER NUT
1031 P07731031 POSITION MARKER 1093 P07731093 DRAWBAR 7/16-20 X 6-3/4
1039 P07731039 MILL TILT CLAMP 1094 P07731094 DRAWBAR CAP
1040 P07731040 KEY 8 X 8 X 12 1095 P07731095 MOTOR BLDC 230V W80-500WC
1041 P07731041 TILT SHAFT M24-3.0 1096 P07731096 KEY 5 X 5 X 20
1042 P07731042 MILL MOUNTING BRACKET 1097 P07731097 MOTOR PULLEY
1043 P07731043 FLAT WASHER 10MM 1098 P07731098 FENDER WASHER 6MM
1044 P07731044 LOCK WASHER 10MM 1099 P07731099 TIMING BELT HTD 350-SM
1045 P07731045 CAP SCREW M10-1.5 X 30 1100 P07731100 FLAT HD SCR M6-1 X 18
1046 P07731046 CAP SCREW M6-1 X 16 1101 P07731101 MOTOR MOUNTING PLATE
1047 P07731047 TILT HUB 1102 P07731102 GEARBOX
1048 P07731048 GRADUATED PLATE 1103 P07731103 SPINDLE BOX
1049 P07731049 FLAT HD SCR M6-1 X 12 1104 P07731104 SET SCREW M6-1 X 25 CONE-PT
1050 P07731050 COLUMN RACK 1105 P07731105 GROUND INDICATOR PLATE
1051 P07731051 HARD STOP 1106 P07731106 MILL BODY
1052 P07731052 FLAT HD SCR M3-.5 X 8 1107 P07731107 MILL GIB
1053 P07731053 COLUMN RACK BRACKET 1108 P07731108 CAP SCREW M8-1.25 X 80
1054 P07731054 GRADUATED DEPTH GAUGE 1113 P07731113 WORM GEAR
1055 P07731055 SHAFT 1114 P07731114 KEY 4 X 4 X 20
1056 P07731056 KEY 4 X 4 X 8 1115 P07731115 GEARED SHAFT 14T
1057 P07731057 TORSION SPRING 1116 P07731116 GEAR 29T
1058 P07731058 SPACER 1117 P07731117 WORM SUPPORT
1059 P07731059 SPRING HOUSING 1118 P07731118 DOWEL PIN 4 X 16
1060 P07731060 FLAT HD SCR M5-.8 X 8 1119 P07731119 COMPRESSION SPRING
1061 P07731061 SPRING SHROUD 1120 P07731120 SET SCREW M6-1 X 8
1062 P07731062 SUPPORT BRACE 1121 P07731121 STEEL BALL 5MM
1063 P07731063 FLAT WASHER 12MM 1122 P07731122 HANDLE LEVER M8-1.25 X 10
1064 P07731064 END CAP 1123 P07731123 HANDLE KNOB M8-1.25
1065 P07731065 ACORN NUT M8-1.25 1124 P07731124 EXT RETAINING RING 12MM
1066 P07731066 SHOULDER SCREW M8-1.25 X 12, 10 X 12 1125 P07731125 DOWN-FEED HANDLE HUB M8-1.25
1067 P07731067 HEX NUT M24-3 1126 P07731126 CAP SCREW M5-.8 X 20
1068 P07731068 DEPTH STOP 1127 P07731127 FINE DOWN-FEED CONTROL COVER
1069 P07731069 DEPTH STOP GIB 1128 P07731128 PHLP HD SCR M4-.7 X 6
1070 P07731070 COLUMN TILT WASHER 24MM 1129 P07731129 FINE DOWN-FEED LINKAGE (WORMGEAR)
1071 P07731071 STANDOFF M10-1.5 X 8 1130 P07731130 TAPER PIN 3 X 12
1072 P07731072 SET SCREW M5-.8 X 6 CONE-PT 1131 P07731131 DOWEL PIN 3 X 12
1073 P07731073 RETAINING COLLAR 1132 P07731132 FINE DOWN-FEED LINKAGE (MIDDLE)
1074 P07731074 MILL COLUMN 1133 P07731133 FINE DOWN FEED LINKAGE (KNOB)
1075 P07731075 COLUMN CAP 1134 P07731134 CAP SCREW M5-.8 X 25
1076 P07731076 POWER CORD 18G 3W 72" 1135 P07731135 FINE DOWN-FEED CONTROL BRACKET
1077 P07731077 MILL ELECTRICAL BOX 1136 P07731136 GRADUATED COLLAR
1078 P07731078 PHLP HD SCR M4-.7 X 8 1137 P07731137 SET SCREW M4-.7 X 12 DOG-PT
1079 P07731079 PLUG IEC 320 C14 1138 P07731138 FINE DOWN-FEED KNOB
1080 P07731080 ARBOR R-8 X B-16 1140 P07731140 CAP SCREW M6-1 X 35
1081 P07731081 CAP SCREW M5-.8 X 10 1141 P07731141 TAP SCREW M4 X 10
1082 P07731082 BEARING RETAINER 1142 P07731142 MILL CIRCUIT BOARD ZM3405
1083 P07731083 BALL BEARING 6206ZZ

Model G0773 (Mfd. Since 12/14)

-95-

Mill Parts Cont.

REF PART # DESCRIPTION REF PART # DESCRIPTION

1142-1 P07731142-1 MILL CIRCUIT BOARD XMT-COM 1165 P07731165 CAP SCREW M4-.7 X 20
1143 P07731143 ELECTRICAL BOX COVER 1166 P07731166 HEX NUT M6-1
1145 P07731145 VARIABLE-SPEED CIRCUIT BOARD X-1 1167 P07731167 FLAT WASHER 6MM
1145-1 P07731145-1 VARIABLE-SPEED DIAL 1168 P07731168 LIMIT SWITCH MOUNTING PLATE
1146 P07731146 POWER INDICATOR LIGHT 1169 P07731169 CAP SCREW M4-.7 X 12
1147 P07731147 FAULT INDICATOR LIGHT 1170 P07731170 MILL SAFETY SHIELD CAM
1148 P07731148 SWITCH BOX COVER 1171 P07731171 SET SCREW M4-.7 X 6
1149 P07731149 TAP SCREW M6 X 10 1172 P07731172 SAFETY SHIELD MOUNT
1150 P07731150 POWER SWITCH KEDU KJD17B 120V 1173 P07731173 FLAT WASHER 5MM
1151 P07731151 FUSE ENCLOSURE 1174 P07731174 THUMB SCREW M5-.8 X 20
1152 P07731152 MILL MOUNTING BRACKET 1175 P07731175 MILL SAFETY SHIELD
1153 P07731153 CONNECTING ROD M14-2 X 20 1176 P07731176 MILL SAFETY SHIELD EXTENSION
1154 P07731154 HEX NUT M14-2 1177 P07731177 BRACKET
1155 P07731155 ADJUSTABLE FOOT M14-2 1178 P07731178 LIMIT SWITCH KEDU QKS7 AC15 250V
1156 P07731156 SWITCHBOX FACEPLATE 1179 P07731179 CAP SCREW M4-.7 X 30
1157 P07731157 FLAT HD SCR M4-.7 X 16 1180 P07731180 FLAT HD SCR M4-.7 X 10
1158 P07731158 STRAIN RELIEF TYPE-5 1181 P07731181 MAGNET
1159 P07731159 CONDUIT 1182 P07731182 SAFETY WINDOW LATCH
1160 P07731160 SET SCREW M6-1 X 8 CONE-PT 1183 P07731183 CAP SCREW M4-.7 X 16
1162 P07731162 COLUMN COVER 1184 P07731184 STRAIN RELIEF M12-1.75 TYPE-3
1164 P07731164 SAFETY SHIELD MOUNTING BRACKET 1185 P07731185 DRO CONNECTOR

-96-

Model G0773 (Mfd. Since 12/14)

Labels & Cosmetics

1201

1209

1202

1203

1204

1205

1206

1207

1208

REF PART # DESCRIPTION REF PART # DESCRIPTION

1201 P07731201 PINCH/ENTANGLEMENT LABEL 1206 P07731206 ENTANGLEMENT HAZARD LABEL
1202 P07731202 ELECTRICITY LABEL 1207 P07731207 SPINDLE SPEED WARNING LABEL
1203 P07731203 DISCONNECT 110V LABEL 1208 P07731208 MACHINE ID LABEL
1204 P07731204 READ MANUAL LABEL 1209 P07731209 GRIZZLY GREEN TOUCH-UP PAINT
1205 P07731205 FACE SHIELD & SAFETY GLASSES LABEL

Safety labels help reduce the risk of serious injury caused by machine hazards. If any label comes
off or becomes unreadable, the owner of this machine MUST replace it in the original location
before resuming operations. For replacements, contact [phone] or www.grizzly.com.

Model G0773 (Mfd. Since 12/14)

-97-

SECTION 11: APPENDIX

Threading & Feeding

Chart

Thread Dial Chart

-98-

Model G0773 (Mfd. Since 12/14)