Grizzly G0768, G0769 User Manual
MODEL G0768/G0769
8" X 16" VARIABLE-SPEED
LATHE & LATHE/MILL
OWNER'S MANUAL
(For models manufactured since 8/15)
Model G0768 Model G0769
COPYRIGHT © AUGUST, 2014 BY GRIZZLY INDUSTRIAL, INC. REVISED AUGUST, 2015 (MN)
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
# BLTSDM16348 PRINTED IN CHINA
V2.08.15
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 ............................................... 3
Machine Description ...................................... 3
Contact Info.................................................... 3
Manual Accuracy ........................................... 3
Identification (G0768)..................................... 4
Identification (G0769)..................................... 5
Controls & Components ................................. 6
Headstock ...................................................................6
Carriage ....................................................................... 6
Tailstock ......................................................................7
End Gears, Pulleys, V-Belts ........................................ 7
Milling Headstock (G0769 Only) ................................. 8
G0768 Data Sheet ......................................... 9
G0769 Data Sheet ....................................... 11
SECTION 1: SAFETY ..................................... 13
Safety Instructions for Machinery ................ 13
Additional Safety for Metal Lathes ............... 15
Additional Safety for Mills/Drills ................... 16
Additional Lathe Chuck Safety..................... 17
SECTION 2: POWER SUPPLY ...................... 18
Availability .................................................................18
Full-Load Current Rating ...........................................18
110V Circuit Requirements .......................................18
Grounding & Plug Requirements ..............................19
Extension Cords ........................................................19
SECTION 3: SETUP ....................................... 20
Setup Overview............................................ 20
Unpacking .................................................... 20
Needed for Setup ......................................... 20
Inventory ...................................................... 21
Cleanup ........................................................ 22
Site Considerations ...................................... 23
Lifting & Placing ........................................... 24
Mounting ...................................................... 25
Leveling ........................................................ 26
Assembly ..................................................... 26
Test Run ...................................................... 27
Spindle Break-In .......................................... 29
Lathe Spindle Break-In ..............................................29
Mill Spindle Break-In (G0769 Only) ..........................29
Recommended Adjustments ........................ 30
SECTION 4: LATHE OPERATIONS .............. 31
Operation Overview ..................................... 31
Chuck & Faceplate Mounting....................... 32
Installation & Removal Device ..................... 32
Chuck Installation......................................... 32
Scroll Chuck Clamping ................................ 33
Changing Jaw Set ........................................ 34
4-Jaw Chuck ................................................ 35
Faceplate ..................................................... 36
Tailstock ....................................................... 37
Tailstock Quill Specs .................................................37
Positioning Tailstock .................................................37
Using Quill .................................................................37
Installing Tooling .......................................................38
Removing Tooling .....................................................38
Offsetting Tailstock ....................................................38
Aligning Tailstock to Spindle Centerline ....................39
Centers ........................................................ 41
Dead Centers ............................................................41
Mounting Dead Center in Spindle .............................41
Removing Center from Spindle .................................41
Mounting Center in Tailstock ....................................42
Removing Center from Tailstock ...............................42
Mounting Workpiece Between Centers .....................42
Steady Rest ................................................. 43
Follow Rest .................................................. 43
Compound Rest ........................................... 44
Four-Way Tool Post ..................................... 44
Installing Tool ............................................................44
Aligning Cutting Tool with Spindle Centerline ...........45
Manual Feed ................................................ 46
Carriage Handwheel .................................................46
Cross Slide Handwheel .............................................46
Compound Rest Handwheel .....................................46
Spindle Speed.............................................. 47
Determining Spindle Speed ......................................47
Setting Spindle Speed Range ...................................47
Setting Spindle Direction & Speed ............................47
Configuration Example ..............................................48
Understanding Gear Charts ......................... 49
Feed & Thread Charts Label .....................................49
How to Read the Feed Chart ....................................50
How to Read the Thread Charts ...............................51
End Gears .................................................... 52
Power Feed Configuration ........................................52
Primary Threading Configuration ..............................52
Secondary Threading Configuration .........................52
Configuring End Gears ..............................................53
Power Feed.................................................. 56
Power Feed Controls ................................................56
Setting Power Feed Rate ..........................................57
Threading ..................................................... 58
Headstock Threading Controls ..................................58
Apron Threading Controls .........................................59
Thread Dial ................................................................59
Thread Dial Chart ......................................................59
SECTION 5: MILL OPERATIONS .................. 60
Operation Overview ..................................... 60
Removing Compound Rest .......................... 61
Removing Compound Rest ......................................61
Re-installing Compound Rest ..................................61
Headstock Movement .................................. 62
Raising/Lowering Headstock .....................................62
Tilting Headstock .......................................................62
Table Travel ................................................. 63
Carriage Handwheel (X-Axis) ....................................63
Cross Slide Handwheel (Y-Axis) ...............................63
Using Spindle Downfeed Controls ............... 64
Coarse Downfeed .....................................................64
Fine Downfeed ..........................................................64
Engaging Fine Downfeed Controls ...........................64
Installing/Removing Tooling ......................... 65
Installing Tooling .......................................................65
Removing Tooling .....................................................66
Spindle Speed.............................................. 67
Determining Spindle Speed ......................................67
Setting Spindle Speed ...............................................67
SECTION 6: ACCESSORIES ......................... 68
SECTION 7: MAINTENANCE ......................... 71
Schedule ...................................................... 71
Ongoing .....................................................................71
Daily, Before Operations ...........................................71
Daily, After Operations ..............................................71
Every 90 Hours of Operation ....................................71
Every 120 Hours of Operation ..................................71
Annually .....................................................................71
Cleaning/Protecting ...................................... 71
Lubrication ................................................... 72
Lubrication Frequency ...............................................72
Ball Oilers ..................................................................72
Leadscrew & Carriage Rack .....................................73
Bedways ....................................................................73
Feed Gearbox ...........................................................73
Cross Slide & Compound Slide .................................73
End Gears .................................................................74
Column Ways (G0769) ..............................................75
Quill Outside Surface ................................................75
Quill Rack .................................................................75
Z-Axis Leadscrew (G0769) .......................................76
Headstock Gears (G0769) ........................................76
Machine Storage .......................................... 77
Preparing Machine for Storage .................................77
Bringing Machine Out of Storage ..............................77
SECTION 8: SERVICE ................................... 78
Troubleshooting ........................................... 78
Motor & Electrical ......................................................78
Lathe Operation ........................................................79
Mill Operation ............................................................80
Tensioning & Replacing V-Belts .................. 81
Adjusting Backlash....................................... 82
Cross Slide ................................................................82
Adjusting Leadscrew End Play .................... 82
Adjusting Gibs .............................................. 83
Adjusting Cross Slide and Compound Slide Gibs .....83
Adjusting Z-Axis Way Gib .........................................84
Adjusting Half Nut ........................................ 84
Replacing Leadscrew Shear Pin.................. 85
Replacing Fuse ............................................ 85
Replacing Brushes ....................................... 86
Replacing Lathe Motor Brushes ................................86
Replacing Mill Motor Brushes (G0769) .....................87
SECTION 9: WIRING ...................................... 88
Wiring Safety Instructions ............................ 88
G0768 Wiring Overview ............................... 89
G0768 Wiring ............................................... 90
G0768 Wiring Photos ................................... 91
G0769 Wiring Overview ............................... 92
G0769 Wiring ............................................... 93
G0769 Wiring Photos ................................... 94
SECTION 10: PARTS ..................................... 95
Headstock .................................................... 95
Carriage Components & Accessories .......... 96
Apron ........................................................... 99
Gearbox ..................................................... 100
Bed & End Gears ....................................... 101
Tailstock ..................................................... 102
G0769 Mill Column .................................... 103
G0769 Mill Headstock ................................ 104
G0768 Labels & Cosmetics ....................... 106
G0769 Labels & Cosmetics ....................... 107
G0768 Electrical Component Diagram ...... 108
G0769 Electrical Component Diagram ...... 109
SECTION 11: APPENDIX ............................. 110
Threading & Feeding Chart ....................... 110
Thread Dial Chart ...................................... 110
WARRANTY & RETURNS ........................... 113
INTRODUCTION
We are proud to provide a high-quality owner’s
manual with your new machine!
We
instructions, specifications, drawings, and photographs
in this manual. Sometimes we make mistakes, but
our policy of continuous improvement also means
that
you receive is
slightly different than shown in the manual
If you find this to be the case, and the difference
between the manual and machine leaves you
confused or unsure about something
check our
website for an updated version. W
current
manuals and
on our web-
site at
Alternatively, you can call our Technical Support
for help. Before calling, make sure you write down
the
from
the machine ID label (see below). This information
is required for us to provide proper tech support,
and it helps us determine if updated documentation is available for your machine.
We stand behind our machines! If you have questions or need help, contact us with the information
below. Before contacting, make sure you get the
serial number
machine ID label. This will help us help you faster.
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Machine Description
The Model G0768 and G0769 share lathe features such as a 600 Watt (
variable-speed controls with digital RPM display,
high/low spindle speed ranges, 4" 3-jaw and
4-jaw chucks, a convenient quick-lock tailstock, a
4-way turret toolpost, steady and follow rests, and
reverse feed for cutting left-hand threads.
The Model G0769 additionally features a 600
Watt (
right head tilt, coarse and fine downfeed controls, Z-axis dovetailed ways for maximum precision, and a
table features T-slots for mounting a vise. The
lathe/mill selector switch also makes changing between lathe and milling modes easy.
Both machines can be mounted on a sturdy workbench, or the optional Model T26599 stand—with
cabinet space for storing tooling and accessories.
3
⁄4 HP) milling headstock motor, 45° left/
1
⁄2 " drill chuck. The cross slide
3
⁄4 HP) 110V DC motor,
Manual Accuracy
made every effort to be exact with the
sometimes the machine
.
,
e post
manual updates for free
www.grizzly.com.
Manufacture Date and Serial Number
Contact Info
and manufacture date from the
Grizzly Technical Support
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Email: techsupport@grizzly.com
Grizzly Documentation Manager
P.O. Box 2069
Bellingham, WA 98227-2069
Email: manuals@grizzly.com
Manufacture Date
Serial Number
Model G0768/G0769 (Mfd. Since 8/15)
-3-
Identification (G0768)
To reduce your risk of
serious injury, read this
entire manual BEFORE
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.
On/Off Switch w/
Emergency Stop
Spindle Direction
Switch
Spindle
Speed
RPM
Display
Button
3-Jaw
Chuck
Steady
Rest
4-Way
Tool Post
Compound Rest
Handwheel
Tailstock
Spindle
Speed Dial
-4-
Feed
Direction
Dial
Carriage
Handwheel
Figure 1. Model G0768 identification.
Cross Slide
Handwheel
using machine.
Half Nut
Lever
Thread
Carriage
Lock
Model G0768/G0769 (Mfd. Since 6/14)
Dial
Identification (G0769)
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.
Fine Downfeed
Handwheel
Vertical Travel
Lathe/Mill Selector
Switch
Spindle
Lock
Handwheel
On/Off Switch w/
Emergency Stop
Button
Spindle Direction
Switch
Spindle
Speed
RPM
Display
Spindle
Speed Dial
3-Jaw
Chuck
Steady
Rest
Vertical Travel
Lock Levers
Downfeed
Selector
Knob
Coarse
Downfeed
Handle
4-Way
Tool Post
Tailstock
Feed
Direction
Dial
Cross Slide
Handwheel
Carriage
Handwheel
Figure 2. Model G0769 identification.
Model G0768/G0769 (Mfd. Since 6/14)
Half Nut
Lever
Carriage
Lock
Thread
Dial
Compound Rest
Handwheel
-5-
Controls &
To reduce your risk of
serious injury, read this
entire manual BEFORE
Components
E. 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.
F. Lathe/Mill Selector Switch (G0769 Only):
Used to select between lathe mode (1), or
mill mode (2).
using machine.
Refer to Figures 3–8 and the following descriptions to become familiar with the basic controls of
this machine.
Headstock
E
D
C
B
A
Figure 3. Control panel.
F
Carriage
I
H
G
Figure 4. Carriage controls.
G. Carriage Handwheel: Manually moves car-
riage left or right along bedway.
H. Cross Slide Handwheel: Moves cross slide
toward and away from workpiece.
I. 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.
J
K
L
M
A. Feed Direction Dial: Used to select direction
of leadscrew rotation when spindle is rotating
in downward (F) direction. Used to switch
between right or left thread cutting.
B. Spindle Speed Dial: Controls spindle speed.
C. Spindle Speed RPM Display: Shows spin-
dle speed.
D. Spindle Direction Switch: Selects spindle
rotation direction.
-6-
J. Cross Slide Table (G0769 Only): Supports
workpieces for milling/drilling operations.
Includes T-slots for mounting milling vises or
other fixtures.
K. Compound Rest Handwheel: Moves tool
toward and away from workpiece at preset
compound angle.
L. Thread Dial: Indicates when to engage the
half nut during threading operations.
M. Half Nut Lever: Engages/disengages half
nut for power feeding and threading operations.
Model G0768/G0769 (Mfd. Since 8/15)
Tailstock End Gears, Pulleys, V-Belts
U. End Gears: The configuration of the end
O
N
T
P
Q
R
S
gears controls the leadscrew speed for power
feeding, and inch and metric threading.
V. V-Belts: Transfer power from motor to idler
and spindle pulleys. The position of the top
V-belt on idler and spindle pulleys controls
spindle speed.
U
Figure 5. Tailstock controls.
N. Tailstock Quill: Uses an MT#2 taper to hold
centers or other tooling, features a scale on
top.
O. Tailstock Quill Lock Lever: Secures quill
position.
P. Tailstock Lock Lever: Secures tailstock in
position along bedway.
Q. Graduated Scale: Indicates quill movement
in increments of 0.001", with one full revolution equaling 0.04" of quill travel.
R. Quill Handwheel: Moves quill toward or
away from spindle.
S. Offset Scale: Indicates relative distance of
tailstock offset from spindle centerline.
T. Tailstock Offset Screws: Adjusts tailstock
offset left or right from spindle centerline (1 of
2).
V
Figure 6. End gears, V-belts, and pulleys.
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 G0768/G0769 (Mfd. Since 8/15)
-7-
Milling Headstock (G0769 Only)
X
AB
Y
AC
Z
AD
AA
Figure 7. Right side milling headstock controls.
X. Fine Downfeed Handwheel: Provides fine
control over vertical spindle travel to provide
Z-axis control when milling.
Y. Vertical Travel Lock Levers: Locks position
of headstock to column.
Z. Downfeed Selector Knob: Selects between
fine and coarse downfeed modes. Tighten to
engage fine downfeed. Loosen to use coarse
downfeed.
AA. Coarse Downfeed Handles: Moves spindle
down quickly when rotated and automatic
spring return brings spindle back up to top
when you release downward pressure on
handles. Typically used for drilling holes or
checking spindle positioning during setups.
Figure 8. Left side milling headstock controls.
AB. Vertical Handwheel: Raises and lowers
headstock for Z-axis control over spindle
positioning during setups.
AC. High/Low Gearbox Knob: Selects low range
"L" or high range "H" for spindle speed.
AD. Quill Lock Lever: Locks vertical position
of quill (or Z-axis) when tightened. Typically
used in conjunction with spindle downfeed
controls when milling.
-8-
Model G0768/G0769 (Mfd. Since 8/15)
MACHINE DATA
SHEET
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901
MODEL G0768 8" X 16" VARIABLE‐SPEED LATHE
Product Dimensions:
Weight.............................................................................................................................................................. 144 lbs.
Width (side-to-side) x Depth (front-to-back) x Height........................................................................... 36 x 16 x 14 in.
Footprint (Length x Width)............................................................................................................... 31-1/2 x 10-1/2 in.
Shipping Dimensions:
Type.......................................................................................................................................................... Wood Crate
Content........................................................................................................................................................... Machine
Weight.............................................................................................................................................................. 166 lbs.
Length x Width x Height....................................................................................................................... 36 x 19 x 17 in.
Must Ship Upright................................................................................................................................................... Yes
Electrical:
Power Requirement........................................................................................................... 110V, Single-Phase, 60 Hz
Full-Load Current Rating........................................................................................................................................ 10A
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................................................................................................................................................ 5-15
Switch Type........................................................................................... ON/OFF Push Button Switch w/Safety Cover
Motors:
Main
Type................................................................................................................................. Universal Brush-Type
Horsepower................................................................................................................................ 600W (3/4 HP)
Phase............................................................................................................................................ Single-Phase
Amps............................................................................................................................................................ 10A
Speed................................................................................................................................................ 5250 RPM
Power Transfer .................................................................................................................................. Belt Drive
Bearings..................................................................................................... Shielded & Permanently Lubricated
Main Specifications:
Operation Info
Swing Over Bed..................................................................................................................................... 8-1/4 in.
Distance Between Centers.................................................................................................................. 15-3/4 in.
Swing Over Cross Slide......................................................................................................................... 4-5/8 in.
Swing Over Saddle................................................................................................................................ 6-7/8 in.
Maximum Tool Bit Size............................................................................................................................. 1/2 in.
Compound Travel.................................................................................................................................. 2-1/8 in.
Carriage Travel.................................................................................................................................... 15-3/4 in.
Cross Slide Travel....................................................................................................................................... 3 in.
Model G0768/G0769 (Mfd. Since 8/15)
-9-
Headstock Info
Spindle Bore.........................................................................................................................................
Spindle Taper............................................................................................................................................
Number of Spindle Speeds................................................................................................................... Variable
Spindle Speeds..................................................................................................... 50 – 1000, 100 – 2000 RPM
Spindle Type........................................................................................................................ Intrinsic Back Plate
Spindle Bearings......................................................................................................................... Tapered Roller
Spindle Length....................................................................................................................................... 8-5/8 in.
Spindle Length with 3-Jaw Chuck....................................................................................................... 10-5/8 in.
Spindle Length with 4-Jaw Chuck....................................................................................................... 10-5/8 in.
Spindle Length with Faceplate.............................................................................................................. 9-3/4 in.
Tailstock Info
Tailstock Quill Travel................................................................................................................................... 2 in.
Tailstock Taper.......................................................................................................................................... MT#2
Tailstock Barrel Diameter....................................................................................................................... 0.87 in.
Threading Info
Number of Longitudinal Feeds......................................................................................................................... 3
Range of Longitudinal Feeds............................................................................. 0.0037, 0.0068, 0.0071 in./rev.
Number of Inch Threads................................................................................................................................. 15
Range of Inch Threads...................................................................................................................... 9 – 44 TPI
Number of Metric Threads.............................................................................................................................. 12
Range of Metric Threads............................................................................................................... 0.4 – 3.0 mm
Dimensions
Bed Width.................................................................................................................................................... 4 in.
Carriage Leadscrew Diameter.................................................................................................................. 5/8 in.
Leadscrew TPI......................................................................................................................................... 12 TPI
Carriage Leadscrew Length....................................................................................................................... 22 in.
Steady Rest Capacity................................................................................................................... 1/4 – 1-1/4 in.
Follow Rest Capacity.................................................................................................................... 1/4 – 1-1/4 in.
Floor to Center Height........................................................................................................................... 8-1/2 in.
0.787 in.
MT#3
Other
Optional Stand............................................................................................................................. Model T26599
Construction
Base..................................................................................................................................................... Cast Iron
Headstock............................................................................................................................................ Cast Iron
End Gears.................................................................................................................................................. Steel
Bed.......................................................................................................................... Precision-Ground Cast Iron
Paint Type/Finish...................................................................................................................................... Epoxy
Other Specifications:
Country of Origin ................................................................................................................................................ China
Warranty ........................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time .............................................................................................................. 1 Hour
Serial Number Location .................................................................................................................................. ID Label
ISO 9001 Factory .................................................................................................................................................. Yes
CSA, ETL, or UL Certified/Listed ............................................................................................................................ No
-10 -
Model G0768/G0769 (Mfd. Since 8/15)
MACHINE DATA
SHEET
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901
MODEL G0769 8" X 16" LATHE WITH MILLING HEAD
Product Dimensions:
Weight.............................................................................................................................................................. 234 lbs.
Width (side-to-side) x Depth (front-to-back) x Height........................................................................... 36 x 20 x 28 in.
Footprint (Length x Width)............................................................................................................... 31-1/2 x 10-1/2 in.
Shipping Dimensions:
Type.......................................................................................................................................................... Wood Crate
Content........................................................................................................................................................... Machine
Weight.............................................................................................................................................................. 287 lbs.
Length x Width x Height....................................................................................................................... 36 x 23 x 35 in.
Must Ship Upright................................................................................................................................................... Yes
Electrical:
Power Requirement........................................................................................................... 110V, Single-Phase, 60 Hz
Full-Load Current Rating........................................................................................................................................ 10A
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................................................................................................................................................ 5-15
Switch Type........................................................................................... ON/OFF Push Button Switch w/Safety Cover
Motors:
Lathe Spindle
Type................................................................................................................................. Universal Brush-Type
Horsepower................................................................................................................................ 600W (3/4 HP)
Phase............................................................................................................................................ Single-Phase
Amps............................................................................................................................................................ 10A
Speed................................................................................................................................................ 5250 RPM
Power Transfer .................................................................................................................................. Belt Drive
Bearings........................................................................................................... Shielded & Permanently Sealed
Mill Spindle
Type................................................................................................................................. Universal Brush-Type
Horsepower................................................................................................................................ 600W (3/4 HP)
Phase............................................................................................................................................ Single-Phase
Amps............................................................................................................................................................ 10A
Speed................................................................................................................................................ 4800 RPM
Power Transfer ................................................................................................................................. Gear Drive
Bearings........................................................................................................... Shielded & Permanently Sealed
Model G0768/G0769 (Mfd. Since 8/15)
-11-
Main Specifications:
Lathe Info
Swing Over Bed.....................................................................................................................................
Distance Between Centers..................................................................................................................
Swing Over Cross Slide......................................................................................................................... 4-5/8 in.
Swing Over Saddle................................................................................................................................ 6-7/8 in.
Maximum Tool Bit Size............................................................................................................................. 1/2 in.
Compound Travel.................................................................................................................................. 2-1/8 in.
Carriage Travel.................................................................................................................................... 15-3/4 in.
Cross Slide Travel....................................................................................................................................... 3 in.
Spindle Bore............................................................................................................................ 0.787 in. (20mm)
Spindle Taper............................................................................................................................................ MT#3
Number Of Spindle Speeds................................................................................................................... Variable
Spindle Speeds..................................................................................................... 50 – 1000, 100 – 2000 RPM
Spindle Type........................................................................................................................ Intrinsic Back Plate
Tailstock Quill Travel................................................................................................................................... 2 in.
Tailstock Taper.......................................................................................................................................... MT#2
Number of Longitudinal Feeds......................................................................................................................... 3
Range of Longitudinal Feeds......................................................................... 0.0037", 0.0068", 0.0071" in./rev.
Number of Inch Threads................................................................................................................................. 15
Range of Inch Threads...................................................................................................................... 9 – 44 TPI
Number of Metric Threads.............................................................................................................................. 12
Range of Metric Threads............................................................................................................... 0.4 – 3.0 mm
Mill Info
Mill Taper................................................................................................................................................... MT#2
Mill Spindle Travel................................................................................................................................. 1-3/4 in.
Mill Swing................................................................................................................................................... 13 in.
Distance Spindle To Work Table.......................................................................................................... 9-7/8 in.
Distance Spindle To Bed..................................................................................................................... 11-1/2 in.
Distance Spindle To Center Line........................................................................................................... 7-3/4 in.
Mill Head Vertical Travel...................................................................................................................... 6-5/16 in.
Mill Head Tilt (Left/Right).................................................................................................. Left 45, Right 45 deg.
Maximum Tool Bit Size............................................................................................................................. 1/2 in.
Drilling Capacity For Steel........................................................................................................................ 1/2 in.
Drilling Capacity For Cast Iron.................................................................................................................. 1/2 in.
Table Size Length.................................................................................................................................. 7-1/4 in.
Table Size Width................................................................................................................................... 3-1/8 in.
Table Size Thickness............................................................................................................................ 1-1/8 in.
Number of T-Slots............................................................................................................................................ 2
T-Slot Size................................................................................................................................................ 1/4 in.
T-Slot Centers....................................................................................................................................... 1-1/2 in.
Drawbar Diameter..................................................................................................................................... 3/8 in.
Drawbar TPI............................................................................................................................................. 16 TPI
Drawbar Length..................................................................................................................................... 8-1/2 in.
Number of Mill Drill Speeds.............................................................................................................................. 2
Mill Speed Range...................................................................................................................... 50 – 2000 RPM
8-1/4 in.
15-3/4 in.
-12-
Construction
Bed....................................................................................................................................................... Cast Iron
Headstock............................................................................................................................................ Cast Iron
Body..................................................................................................................................................... Cast Iron
End Gears.................................................................................................................................................. Steel
Paint Type/Finish...................................................................................................................................... Epoxy
Model G0768/G0769 (Mfd. Since 8/15)
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-
Model G0768/G0769 (Mfd. Since 8/15)
-13-
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 reduce
risk of slipping and losing control or accidentally
contacting cutting tool or moving parts.
HAZARDOUS DUST. Dust created by machinery
operations may cause cancer, birth defects, or
long-term respiratory damage. Be aware of dust
hazards associated with each workpiece material. 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.
GUARDS & COVERS. Guards and covers reduce
accidental contact with moving parts or flying
debris. Make sure they are properly installed,
undamaged, and working correctly BEFORE
operating machine.
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.
DAMAGED PARTS. Regularly inspect machine
for damaged, loose, or mis-adjusted parts—or
any condition that could affect safe operation.
Immediately repair/replace BEFORE operating
machine. For your own safety, DO NOT operate
machine with damaged parts!
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.
EXPERIENCING DIFFICULTIES. If at any time
you experience difficulties performing the intended operation, stop using the machine! Contact our
Technical Support at (570) 546-9663.
-14-
Model G0768/G0769 (Mfd. Since 8/15)
Additional Safety for Metal Lathes
The primary risks of operating a Metal Lathe are as follows: You can be seriously injured or
killed by getting entangled in, crushed between, or struck by rotating parts on a lathe. You can
be struck with deadly force by unsecured tools or workpieces attached to rotating objects. To
reduce your risk of serious injury when operating this machine, completely heed and understand
the following:
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.
ROTAT I N G PAR T S. 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.
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.
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.
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.
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.
Model G0768/G0769 (Mfd. Since 8/15)
-15-
Additional Safety for Mills/Drills
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.
-16 -
Model G0768/G0769 (Mfd. Since 8/15)
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.
Model G0768/G0769 (Mfd. Since 8/15)
-17-
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
machine to power before completing 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 .......................................... 10A
-18-
property, consult an electrician if you are
unsure about wiring practices or electrical
codes in your area.
Model G0768/G0769 (Mfd. Since 8/15)
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 9. 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.
Model G0768/G0769 (Mfd. Since 8/15)
Minimum Gauge Size ...........................14 AWG
Maximum Length (Shorter is Better).......50 ft.
-19 -
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 (570) 546-9663
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.
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.
-20-
Needed for Setup
The following are needed to complete the setup
process, but are not included with your machine.
Description
• Additional People
• Safety Glasses
• Cleaner/Degreaser (Page 22)
• Quality Metal Protectant
• Disposable Shop Rags
• Forklift
• Lifting Slings (rated for at least 300 lbs.)
• Mounting Hardware (Page 25)
Model G0768/G0769 (Mfd. Since 8/15)
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 10) Qty.
A. 3-Jaw Chuck 4" w/Internal Jaw Set ............ 1
B. Steady Rest ................................................ 1
C. 4-Way Tool Post ......................................... 1
D. Drill Chuck
E. Milling Headstock (G0769) ......................... 1
F. Backsplash ................................................. 1
G. Tails t o c k ...................................................... 1
H. Follow Rest (Not Shown) ............................ 1
1
⁄2 " w/Chuck Key (G0769) ........ 1
E
V. Fuse Set ..................................................... 1
— 10A (G0768) ........................................... 1
— 15A (G0768) ........................................... 1
— 10A (G0769) ........................................... 2
— 15A (G0769) ........................................... 1
W. Dead Center MT#2 .................................... 1
X. Dead Center MT#3 ..................................... 1
Y. Change Gear Set ....................................... 1
— Change Gear (20-tooth, Installed) ......... 2
— Change Gear (30-tooth, Installed) ......... 2
— Change Gear (33-tooth) ......................... 1
— Change Gear (40-tooth) ......................... 1
— Change Gear (50-tooth) ......................... 1
— Change Gear (53-tooth) ......................... 1
— Change Gear (55-tooth) ......................... 1
— Change Gear (57-tooth) ......................... 1
— Change Gear (60-tooth) ......................... 1
— Change Gear (63-tooth) ......................... 1
— Change Gear (65-tooth) ......................... 1
— Change Gear (70-tooth) ......................... 1
— Change Gear (71-tooth) ......................... 1
— Change Gear (72-tooth) ......................... 1
— Change Gear (80-tooth, Installed) ......... 2
— Change Gear (84-tooth, Installed) ......... 1
Z. 4-Jaw Universal Chuck 4" (Not Shown) ..... 1
D
C
B
A
Figure 10. Installed components (G0769 shown).
Loose Components (Figure 11) Qty.
I. Chip Pan (Not Shown) ................................ 1
J. Toolbox ....................................................... 1
K. Oil Bottle for Oil .......................................... 1
L. Faceplate 6
M. 3-Jaw Chuck External Jaw Set .................. 1
N. Hex Wrench Set (2.5, 3, 4, 5, 6mm) ......1 Ea
O. Flat Head Screwdriver #2 ........................... 1
P. Phillips Head Screwdriver #2 ..................... 1
Q. Spanner Wrench ........................................ 1
R. Wrench Set (6/7, 8/10, 14/16mm) ............... 1
S. Lathe Chuck Key ........................................ 1
T. Square Socket T-Wrench ........................... 1
U. Handwheel Handles ................................... 2
Model G0768/G0769 (Mfd. Since 8/15)
3
⁄4" ........................................... 1
F
G
K
J
W
U
V
U
S
T
Figure 11. Packaged components.
X
R
S
Y
Q
L
M
P
O
N
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.
-21-
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. Avo i 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 12. T23692 Orange Power Degreaser.
Repeat Steps 2–3 as necessary until clean,
then coat all unpainted surfaces with a quality
-22-
Model G0768/G0769 (Mfd. Since 8/15)
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
Keep
Workpiece
Loading
Area
Unobstructed
Children or untrained people
may be seriously injured by
this machine. Only install in an
access restricted location.
Model G0768 Model G0769
36"
Figure 13. 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
16"
Lighting around the machine must be adequate
enough that operations can be performed safely.
36"
Keep
Workpiece
Loading
Area
Unobstructed
20"
Model G0768/G0769 (Mfd. Since 8/15)
-23-
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 20 for details.
4. To balance load for lifting, move tailstock and
carriage to extreme 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
14, 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 selected mounting surface and use it as a template to mark hole
locations for mounting hardware (refer to
Leveling & Mounting on Page 25).
— If mounting machine to optional T26599
stand (see Accessories on Page 68),
align holes in chip pan with pre-drilled
mounting holes in stand.
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 14. Example of lifting sling positions.
6. Attach lifting slings to forklift forks (or other
power lifting equipment).
Note: To balance the load when lifting, the
lifting strap closest to the headstock must be
slightly shorter than the lifting strap on the
tailstock side. If you are using lifting straps of
equal length, this can be achieved by wrapping the lifting strap on the headstock side
one or more times around the forklift fork, or
by placing a block of wood on the fork to raise
up the ends of the lifting strap.
7. Have an assistant hold mill headstock to
steady load, then lift machine just enough to
clear any obstacles and move it to its mounting position.
8. Properly mount machine as instructed in
Mounting subsection on Page 25.
-24-
Model G0768/G0769 (Mfd. Since 8/15)
Mounting
Follow these guidelines when mounting your
machine to ensure safe and accurate cutting
results:
Number of Mounting Holes ............................ 2
5
Diameter of Mounting Hardware ................
⁄16"
The chip pan and lathe base have holes that allow
the machine to be mounted to the optional Model
T26599 Stand (see Figure 15) or a workbench.
Figure 15. T26599 Stand for G0768/G0769.
The T26599 Stand is specifically designed for
the G0768/G0769 and comes with pre-drilled
mounting holes that match the base of these
machines. You MUST mount your machine
to a stand or workbench to prevent it from
unexpectedly moving during operation, which
could lead to personal injury or property damage.
• 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, 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).
Hex Nut
Lock Washer
Flat Washer
Lathe
Silicon
Chip Pan
Workbench
Flat Washer
Model G0768/G0769 (Mfd. Since 8/15)
Hex Bolt
Figure 16. Example of a "Through Mount" setup.
-25-
Leveling
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.
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.
Assembly
With the exception of the handwheel handles, the
lathe is shipped fully assembled.
Use a flat head screwdriver to attach the handwheel
handles shown in Figure 18.
Cross Slide
Handle
Carriage
Handle
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 17 for an example of a high-precision
level.
Figure 17. Grizzly Model H2683 12" Master
Machinist's Level.
Figure 18. Handwheel handles installed.
-26-
Model G0768/G0769 (Mfd. Since 8/15)
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
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.
3. Set spindle direction switch to neutral ("0"
position), and rotate spindle speed dial all the
way counterclockwise.
G0769 Only: Set lathe/mill selector switch to
"0" (see Figure 19 on Page on this page).
4. Shift feed direction dial to neutral (see Figure
20).
Feed
Direction
Lever
Feed Direction Dial
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 19) to prevent unexpected start up.
Spindle Direction
Switch Set to "O"
Lathe/Mill
Selector Switch
Emergency
Stop Button
LEFT
(Clockwise Rotation)
Figure 20. Neutral feed direction dial setting.
5. Make sure chuck and jaws, if installed, are
secure (see Chuck Installation on Page 32).
Note: If a chuck is not installed on the lathe,
you do not need to install one for this test run.
6. Disengage half nut with lever shown in
Figure 21.
CENTER
(Neutral)
Half Nut
Lever
Disengaged
RIGHT
(CCW Rotation)
Figure 19. Headstock controls (G0769 shown).
Model G0768/G0769 (Mfd. Since 8/15)
Spindle Speed
Dial
Half Nut
Lever
Engaged
Figure 21. Half nut lever disengaged.
-27-
7. Connect machine to power. The spindle
speed RPM display will illuminate.
13. Rotate spindle speed dial all the way counterclockwise.
8. Press tab in on side of Emergency Stop button and lift switch cover to reset it.
9. Turn spindle direction switch to "F" position.
G0769 Only: Set lathe/mill selector switch to
"1" for lathe mode.
10. Press green ON button, leaving switch cover
open.
11. Slowly rotate spindle speed dial clockwise
until spindle speed display shows 100 RPM.
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.
14. Set lathe/mill selector switch to "2" for mill
mode.
15. Rotate high/low gearbox knob to low "L" (see
Figure 22).
Note: It may be necessary to rotate spindle
by hand so gears will mesh.
Gearbox
Knob
Gearbox Knob
12. Press Emergency Stop button to turn lathe
OFF. Then, without resetting Emergency
Stop button, try to restart spindle rotation by
rotating spindle speed dial all the way counterclockwise and then clockwise. The spindle
should not start.
—If the spindle does start with Emergency
Stop button pressed in, the button is not
operating correctly. This safety feature
must operate properly before continuing
operation. Turn spindle speed dial all the
way counterclockwise to stop lathe, disconnect it from power, and call Tech Support
for help.
Model G0768: Congratulations! Test Run is
complete! Now perform the Spindle Break-
In procedure beginning on Page 29.
Model G0769: Continue with remaining test
run instructions.
L
(Low)
Figure 22. High/low gearbox knob set to low "L".
16. Reset Emergency Stop button.
17. Press green ON button.
18. Rotate spindle speed dial clockwise until
spindle speed display shows 50 RPM.
19. Mill spindle should begin clockwise rotation
(as viewed from top).
20. Press Emergency Stop button.
Congratulations! Model G0769 test run is
complete. Now perform the Spindle Break-
In procedure.
CENTER
(Neutral)
H
(High)
-28-
Model G0768/G0769 (Mfd. Since 8/15)
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