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)