Grizzly g0746, g0749 User Manual
MODEL G0746 /G0749
GEAR-HEAD LATHE
OWNER'S MANUAL
(For models manufactured since 3/13)
COPYRIGHT © JUNE, 2013 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.
#BLTS15786 PRINTED IN CHINA
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 ................................................... 4
Controls & Components ................................. 5
Master Power Switch .......................................... 5
Headstock ........................................................... 5
Carriage .............................................................. 6
Tailstock .............................................................. 6
Control Panel ...................................................... 7
End Gears ........................................................... 7
Safety Foot Brake ............................................... 7
G0746 Data Sheet ......................................... 8
G0749 Data Sheet ....................................... 11
SECTION 1: SAFETY ..................................... 14
Safety Instructions for Machinery ................ 14
Additional Safety for Metal Lathes ............... 16
Additional Chuck Safety ............................... 17
SECTION 2: POWER SUPPLY ...................... 18
Availability ......................................................... 18
Full-Load Current Rating .................................. 18
Circuit Requirements for 220V .......................... 18
Connection Type ............................................... 19
Grounding Instructions ...................................... 19
Extension Cords ................................................ 19
Correcting Phase Polarity ............................ 19
SECTION 3: SETUP ....................................... 20
Preparation .................................................. 20
Unpacking .................................................... 20
Needed for Setup ......................................... 20
Inventory ...................................................... 21
Cleanup ........................................................ 22
Site Considerations ...................................... 23
Lifting & Placing ........................................... 24
Anchoring to Floor ....................................... 25
Anchoring to Concrete Floors ...........................25
Leveling ........................................................ 25
Assembly ..................................................... 26
Lubricating Lathe ......................................... 27
Adding Coolant ............................................ 27
Power Connection........................................ 27
Test Run ...................................................... 28
Spindle Break-In .......................................... 31
Recommended Adjustments ........................ 31
SECTION 4: OPERATIONS ........................... 32
Operation Overview ..................................... 32
Chuck & Plate Mounting .............................. 33
Camlock Stud Installation ............................ 33
Installation & Removal Devices ................... 34
Chuck Installation......................................... 34
Registration Marks ............................................ 35
Chuck Removal............................................ 36
Scroll Chuck Clamping ................................ 36
Changing Jaw Set ........................................ 37
4-Jaw Chuck ................................................ 38
Drive Plate ................................................... 39
Faceplate ..................................................... 39
Tailstock ....................................................... 40
Positioning Tailstock ......................................... 40
Using Quill ......................................................... 40
Installing Tooling ............................................... 40
Removing Tooling ............................................. 41
Offsetting Tailstock ...........................................41
Aligning Tailstock to Spindle Centerline ...........42
Centers ........................................................ 43
Dead Centers .................................................... 43
Live Centers ...................................................... 44
Mounting Dead Center in Spindle ..................... 44
Removing Center from Spindle ......................... 44
Mounting Center in Tailstock ............................ 44
Removing Center from Tailstock ......................45
Mounting Workpiece Between Centers ............45
Steady Rest ................................................. 46
Follow Rest .................................................. 47
Carriage & Slide Locks ................................ 47
Compound Rest ........................................... 48
Four-Way Tool Post ..................................... 48
Installing Tool .................................................... 48
Aligning Cutting Tool with Spindle Centerline ... 49
Micrometer Stop........................................... 50
Manual Feed ................................................ 50
Carriage Handwheel ......................................... 50
Cross Slide Handwheel .................................... 50
Compound Rest Handwheel ............................. 50
Spindle Speed.............................................. 51
Determining Spindle Speed .............................. 51
Setting Spindle Speed ......................................51
Configuration Example ......................................52
Power Feed.................................................. 52
Power Feed Controls ........................................ 53
Setting Power Feed Rate .................................. 54
End Gears .................................................... 55
Primary Configuration ....................................... 55
Secondary Configuration ..................................55
Alternate Configuration ..................................... 55
End-Gear Configuration Example ..................... 56
Threading ..................................................... 57
Headstock Threading Controls .........................57
Apron Threading Controls ................................. 58
Thread Dial .......................................................58
Thread Dial Chart ............................................. 59
Pitch Turning ................................................ 60
Headstock Pitch Turning Controls .................... 60
Coolant System............................................ 62
Chip Drawer ................................................. 63
SECTION 5: ACCESSORIES ......................... 64
SECTION 6: MAINTENANCE ......................... 66
Schedule ...................................................... 66
Ongoing ............................................................66
Daily, Before Operations ................................... 66
Daily, After Operations ...................................... 66
Every 50 Hours ................................................. 66
Every 1000 Operating Hours ............................ 66
Annually ............................................................ 66
Cleaning/Protecting ...................................... 66
Lubrication ................................................... 67
Lubrication Frequency ......................................67
Lubrication Amount & Type ..............................67
Headstock ......................................................... 67
Quick-Change Gearbox .................................... 68
Apron ................................................................69
One-Shot Oiler .................................................. 69
Longitudinal Leadscrew .................................... 69
Ball Oilers .......................................................... 70
End Gears ......................................................... 71
Coolant System Service .............................. 72
Hazards ............................................................. 72
Adding Coolant .................................................73
Changing Coolant ............................................. 73
Machine Storage .......................................... 74
Preparing Lathe for Storage .............................74
Bringing Lathe Out of Storage .......................... 74
Replacing V-Belts .............................................82
Brake & Switch ............................................ 83
Adjusting Brake ................................................. 83
Replacing Brake ................................................ 84
Gap Insert Removal & Installation ............... 84
Gap Removal .................................................... 84
Gap Installation ................................................. 85
SECTION 8: WIRING ...................................... 86
Wiring Safety Instructions ............................ 86
Electrical Cabinet & Motors ......................... 87
Circuit Diagram ............................................ 88
SECTION 9: PARTS ....................................... 89
Control Rod & Brake .................................... 89
Bed & Body .................................................. 91
Headstock Gears ......................................... 93
Headstock Controls...................................... 95
Quick-Change Gearbox ............................... 97
End Gears .................................................. 100
Saddle ........................................................ 101
Slides ......................................................... 103
Apron ......................................................... 104
Steady Rest ............................................... 107
Follow Rest ................................................ 107
Tailstock ..................................................... 108
Electrical Cabinet ....................................... 109
Accessories ................................................ 110
Front Machine Labels ................................ 111
Rear Machine Labels ................................. 112
SECTION 10: APPENDIX ............................. 113
Threading and Feeding Chart .................... 113
Diametral & Modular Pitch Chart ............... 114
WARRANTY & RETURNS ........................... 117
SECTION 7: SERVICE ................................... 75
Troubleshooting ........................................... 75
Motor & Electrical .............................................. 75
Lathe Operation ................................................ 76
Backlash Adjustment ................................... 78
Compound Rest ................................................ 78
Cross Slide ........................................................ 78
Leadscrew End-Play Adjustment ................. 79
Gib Adjustment ............................................ 79
Cross Slide Gib ................................................. 79
Compound Slide Gib ......................................... 80
Saddle Gib ........................................................ 80
V-Belts ......................................................... 81
Tensioning V-Belts ............................................ 81
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,
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If you find this to be the case, and the difference
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Manufacture Date
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We stand behind our machines. If you have
any questions or need help, use the information
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Machine Description
The Model G0746 is a 20" x 60" lathe. The Model
G0749 is a 16" x 40" lathe. The main difference
between the two models is the G0746 has a
larger spindle bore, swing over bed, and distance
between centers than the G0749.
The Models G0746 and G0749 feature thick castings and super heavy-duty construction, making
them extremely rigid and solid. We equipped
both models with a 10 HP, 220V, 3-phase spindle
motor, massive tailstock, steady rest, and follow
rest—ensuring these lathes are a reliable workhorse in demanding machine shops that turn big
and heavy workpieces.
Contact Info
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: (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 G0746/G0749 (Mfg. Since 3/13)
-3-
Identification
E
A
U
T
C
B
D
F
G
H
I
J
K
L
M
N
S
R
Figure 1. Model G0746 identification.
A. Headstock
B. D1-8 Camlock MT#7 Spindle
C. 3-Jaw Chuck 10"
D. Steady Rest
E. Halogen Work Lamp
F. Follow Rest
G. 4-Way Tool Post
H. Compound Rest
I. Coolant Nozzle & Valve
J. Tailstock (see Page 6 for details)
K. Longitudinal Leadscrew
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.
Q
OP
L. Feed Rod
M. Control Rod
N. Coolant Reservoir & Pump Access
O. Chip Drawer
P. Safety Foot Brake
Q. Carriage (see Page 6 for details)
R. Micrometer Stop
S. Leadscrew Feed Rod Selection Lever
T. Quick-Change Gearbox Controls (see Page
5 for details)
U. Headstock Controls (see Page 5 for details)
Untrained users have an increased risk
of seriously injuring themselves with this
machine. Do not operate this machine until
you have understood this entire manual and
received proper training.
-4-
Model G0746/G0749 (Mfg. Since 3/13)
Controls &
To reduce your risk of
serious injury, read this
entire manual BEFORE
Components
Headstock
C
A
Refer to Figures 3–8 and the following descriptions to become familiar with the basic controls of
this lathe.
Many of the controls will be explained in greater
detail later in this manual.
Master Power Switch
The rotary switch shown in Figure 2 toggles
incoming power ON and OFF to the lathe controls.
As a safety feature, it also prevents the electrical
cabinet door from being opened when the switch
is ON.
Main Power
Switch
B
D
E
G
F
Figure 3. Headstock controls.
A. Spindle Speed Range Lever: Selects one of
three spindle speed ranges.
B. Headstock Feed Direction Lever: Controls
rotation direction of leadscrew and feed rod.
C. Spindle Speed Lever: Selects one of five
different spindle speeds within the selected
speed range.
Figure 2. Location of the main power switch.
using machine.
D. Spindle Speed Chart: Shows how to posi-
tion the spindle speed lever and spindle
range lever to set each of the 15 available
spindle speeds.
E. Thread and Feed Chart: Shows how to
arrange gearbox controls for different threading or feeding options.
F. Quick-Change Gearbox Levers and Dial:
Controls leadscrew and feed rod speed for
threading and feeding operations.
G. Leadscrew Feed Rod Selection Lever:
Enables leadscrew or feed rod.
Model G0746/G0749 (Mfg. Since 3/13)
-5-
Carriage
Tailstock
H
J
R
N
Q
H. 4-Way Tool Post: Holds up to four different
types of tooling, making it quick and easy to
switch tool type for different types of turning
operations.
I. Compound Rest Handwheel: Moves tool
toward and away from workpiece at preset
angle.
P
Figure 4. Carriage controls.
O
I
K
L
M
S
T
Figure 5. Additional tailstock controls.
X
U
V
W
Y
J. Carriage Lock: Secures carriage in place for
greater rigidity when it should not move.
K. Feed Selection Lever: Selects power feed
for carriage or cross slide.
L. Thread Dial: Indicates when to engage the
half nut during inch threading operations.
M. Spindle Lever: Starts, stops, and reverses
direction of spindle rotation.
N. Feed Lever: Enables carriage for power feed
or threading operations.
O. One-Shot Oiler: Pumps oil from apron res-
ervoir to lubricate carriage ways.
P. Half Nut Lever: Engages/disengages half
nut for threading operations.
Q. Carriage Handwheel: Moves carriage along
the bed.
R. Cross Slide Handwheel: Moves cross slide
toward and away from workpiece.
Figure 6. Tailstock controls.
S. Quill: Holds centers and tooling.
T. Quill Lock Lever: Secures quill in position.
U. Tailstock Lock Lever: Secures tailstock in
position along the bedway.
V. Graduated Scale: Indicates quill movement
in increments of 0.001" with one full revolution equaling 0.200" of quill travel.
W. Quill Handwheel: Moves quill toward or
away from spindle.
X. Tailstock Offset Screws: Adjusts tailstock
offset left or right from spindle centerline (1 of
2).
Y. Offset Scale: Indicates relative distance of
tailstock offset from spindle centerline.
-6-
Model G0746/G0749 (Mfg. Since 3/13)
Control Panel Safety Foot Brake
This lathe is equipped with a foot brake (see
Figure 9) to quickly stop the spindle instead of
allowing the spindle to coast to a stop on its own.
Z
AC
AB
AA
Pushing the foot brake while the spindle is ON
cuts power to the motor and stops the spindle.
After the foot brake is used, the spindle lever
must be returned to the OFF (middle) position
to reset the spindle switches before re-starting
spindle rotation.
Figure 7. Control panel.
Z. Coolant Pump Switch: Controls coolant
pump motor.
AA. EMERGENCY STOP Button: Stops all
machine functions. Twist clockwise to reset.
AB. Power Lamp: Illuminates when main power
switch is turned ON and EMERGENCY STOP
button is reset.
AC. Jog/Inching Button: Powers forward spindle
rotation as long as it is pressed.
End Gears
Spindle Lever
Foot Brake
Figure 9. Foot brake and spindle lever.
End
Gears
Figure 8. End gear components.
Configuring the end gears (shown in Figure)
8 controls the speed of the leadscrew for threading or the feed rod for power feed operations.
Model G0746/G0749 (Mfg. Since 3/13)
-7-
MACHINE DATA
SHEET
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901
MODEL G0746 20" X 60" LATHE
Product Dimensions:
Weight............................................................................................................................................................ 4145 lbs.
Width (side-to-side) x Depth (front-to-back) x Height............................................................. 108-1/4 x 42-1/2 x 59 in.
Footprint (Length x Width)............................................................................................................. 102-3/4 x 20-7/8 in.
Shipping Dimensions:
Type.......................................................................................................................................................... Wood Crate
Content........................................................................................................................................................... Machine
Weight............................................................................................................................................................ 5445 lbs.
Length x Width x Height..................................................................................................................... 115 x 45 x 69 in.
Must Ship Upright................................................................................................................................................... Yes
Electrical:
Power Requirement................................................................................................................... 220V, 3-Phase, 60 Hz
Prewired Voltage.................................................................................................................................................. 220V
Full-Load Current Rating................................................................................................................................... 30.35A
Minimum Circuit Size.............................................................................................................................................. 40A
Connection Type....................................................................................................................... Permanent (Hardwire)
Switch Type............................................................................................ Control Panel w/Magnetic Switch Protection
Recommended Phase Converter....................................................................................................................... H3741
Motors:
Main
Coolant Pump
Type........................................................................................................................................... TEFC Induction
Horsepower.............................................................................................................................................. 10 HP
Phase.................................................................................................................................................... 3-Phase
Amps............................................................................................................................................................ 30A
Speed................................................................................................................................................ 1725 RPM
Power Transfer ..................................................................................................................... Triple V-Belt Drive
Bearings..................................................................................................... Shielded & Permanently Lubricated
Type........................................................................................................................................... TEFC Induction
Horsepower............................................................................................................................................. 1/8 HP
Phase.................................................................................................................................................... 3-Phase
Amps......................................................................................................................................................... 0.35A
Speed................................................................................................................................................ 3450 RPM
Power Transfer ............................................................................................................................... Direct Drive
Bearings..................................................................................................... Shielded & Permanently Lubricated
-8-
Model G0746/G0749 (Mfg. Since 3/13)
Main Specifications:
Operation Info
Swing Over Bed......................................................................................................................................... 20 in.
Distance Between Centers........................................................................................................................ 60 in.
Max Weight Between Centers............................................................................................................. 1300 lbs.
Swing Over Cross Slide............................................................................................................................. 13 in.
Swing Over Saddle.................................................................................................................................... 13 in.
Swing Over Gap........................................................................................................................................ 25 in.
Maximum Tool Bit Size................................................................................................................................ 1 in.
Compound Travel........................................................................................................................................ 5 in.
Carriage Travel.......................................................................................................................................... 60 in.
Cross Slide Travel..................................................................................................................................... 13 in.
Headstock Info
Spindle Bore........................................................................................................................................... 3.15 in.
Spindle Taper............................................................................................................................................ MT#7
Number of Spindle Speeds............................................................................................................................. 15
Spindle Speeds......................................................................................................................... 24 – 1600 RPM
Spindle Type................................................................................................................................ D1-8 Camlock
Spindle Bearings........................................................................................................................ Tapered Roller
Spindle Length..................................................................................................................................... 28-1/8 in.
Spindle Length with 3-Jaw Chuck.............................................................................................................. 33 in.
Spindle Length with 4-Jaw Chuck....................................................................................................... 32-7/8 in.
Spindle Length with Faceplate............................................................................................................ 29-7/8 in.
Tailstock Info
Tailstock Quill Travel............................................................................................................................. 4-3/4 in.
Tailstock Taper.......................................................................................................................................... MT#5
Tailstock Barrel Diameter......................................................................................................................... 2.6 in.
Threading Info
Number of Longitudinal Feeds....................................................................................................................... 66
Range of Longitudinal Feeds........................................................................................ 0.0027 – 0.1500 in./rev.
Number of Cross Feeds................................................................................................................................. 66
Range of Cross Feeds................................................................................................... 0.0013 – 0.0750 in./rev
Number of Inch Threads................................................................................................................................. 66
Range of Inch Threads...................................................................................................................... 1 – 56 TPI
Number of Metric Threads.............................................................................................................................. 66
Range of Metric Threads................................................................................................................ 0.5 – 28 mm
Number of Modular Pitches............................................................................................................................ 33
Range of Modular Pitches.............................................................................................................. 0.5 – 3.5 MP
Number of Diametral Pitches.......................................................................................................................... 33
Range of Diametral Pitches................................................................................................................ 8 – 56 DP
Dimensions
Bed Width.................................................................................................................................................. 13 in.
Leadscrew Diameter.............................................................................................................................. 1-3/8 in.
Leadscrew TPI........................................................................................................................................... 4 TPI
Leadscrew Length............................................................................................................................... 79-1/2 in.
Steady Rest Capacity............................................................................................................................ 6-1/4 in.
Follow Rest Capacity......................................................................................................................... 3-15/16 in.
Faceplate Size........................................................................................................................................... 17 in.
Feed Rod Diameter.............................................................................................................................. 13/16 in.
Floor to Center Height......................................................................................................................... 45-1/4 in.
Height With Leveling Jacks........................................................................................................................ 63 in.
Model G0746/G0749 (Mfg. Since 3/13)
-9-
Construction
Base..................................................................................................................................................... Cast Iron
Headstock............................................................................................................................................ Cast Iron
Headstock Gears........................................................................................................................................ Steel
Bed.................................................................................................. Hardened and Precision-Ground Cast Iron
Body..................................................................................................................................................... Cast Iron
Stand.................................................................................................................................................... Cast Iron
Paint......................................................................................................................................................... Epoxy
Fluid Capacities
Headstock Capacity................................................................................................................................... 18 qt.
Headstock Fluid Type................................................................ ISO 32 (eg. Grizzly T23963, Mobil DTE Light)
Gearbox Capacity..................................................................................................................................... 9.5 qt.
Gearbox Fluid Type...................................................................... ISO 68 (eg. Grizzly T23962, Mobil Vactra 2)
Apron Capacity......................................................................................................................................... 6.5 qt.
Apron Fluid Type.......................................................................... ISO 68 (eg. Grizzly T23962, Mobil Vactra 2)
Coolant Capacity.................................................................................................................................. 21.25 qt.
Other Specifications:
Country Of Origin ............................................................................................................................................... China
Warranty ........................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time ............................................................................................................. 2 Hours
Serial Number Location ..................................................................................................... ID Label on Front of Lathe
Sound Rating ..................................................................................................................................................... 85 dB
ISO 9001 Factory .................................................................................................................................................. Yes
CSA Certified .......................................................................................................................................................... No
Features:
Full-length splash guard
Apron-mounted ON/OFF/reverse spindle lever
Chip tray slides out for easy cleaning
Cast iron stand
Foot brake
Coolant system
Halogen light
Headstock gears run in an oil bath
Jog button and emergency stop button
Quick-change tool post
Micrometer stop
Universal gearbox allows cutting of inch, metric threads, and modular and diametral pitches
Accessories Included:
Steady rest
Follow rest
2 MT#5 dead centers
Center sleeve
10" 3-Jaw chuck with 2 sets of jaws
12" 4-Jaw chuck with reversible jaws
Two change gears
8 leveling pads
Tool box
Service tools
Manual
-10 -
Model G0746/G0749 (Mfg. Since 3/13)
MACHINE DATA
SHEET
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901
MODEL G0749 16 X 40 HEAVY DUTY LATHE
Product Dimensions:
Weight............................................................................................................................................................ 3616 lbs.
Width (side-to-side) x Depth (front-to-back) x Height........................................................ 88-5/8 x 42-1/2 x 55-1/8 in.
Footprint (Length x Width)............................................................................................................................ 84 x 21 in.
Shipping Dimensions:
Type.......................................................................................................................................................... Wood Crate
Content........................................................................................................................................................... Machine
Weight............................................................................................................................................................ 5049 lbs.
Length x Width x Height....................................................................................................................... 96 x 45 x 69 in.
Must Ship Upright................................................................................................................................................... Yes
Electrical:
Power Requirement................................................................................................................... 220V, 3-Phase, 60 Hz
Prewired Voltage.................................................................................................................................................. 220V
Full-Load Current Rating..................................................................................................................................... 30.3A
Minimum Circuit Size.............................................................................................................................................. 40A
Connection Type....................................................................................................................... Permanent (Hardwire)
Switch Type............................................................................................ Control Panel w/Magnetic Switch Protection
Recommended Phase Converter....................................................................................................................... H3741
Motors:
Main
Coolant Pump
Type........................................................................................................................................... TEFC Induction
Horsepower.............................................................................................................................................. 10 HP
Phase.................................................................................................................................................... 3-Phase
Amps............................................................................................................................................................ 30A
Speed................................................................................................................................................ 1725 RPM
Power Transfer ............................................................................................................................... V-Belt Drive
Bearings..................................................................................................... Shielded & Permanently Lubricated
Type........................................................................................................................................... TEFC Induction
Horsepower............................................................................................................................................. 1/8 HP
Phase.................................................................................................................................................... 3-Phase
Amps........................................................................................................................................................... 0.3A
Speed................................................................................................................................................ 1725 RPM
Power Transfer ............................................................................................................................... Direct Drive
Bearings..................................................................................................... Shielded & Permanently Lubricated
Model G0746/G0749 (Mfg. Since 3/13)
-11-
Main Specifications:
Operation Info
Headstock Info
Tailstock Info
Swing Over Bed......................................................................................................................................... 16 in.
Distance Between Centers........................................................................................................................ 40 in.
Max Weight Between Centers............................................................................................................. 1300 lbs.
Swing Over Cross Slide............................................................................................................................... 9 in.
Swing Over Saddle.............................................................................................................................. 13-3/4 in.
Swing Over Gap........................................................................................................................................ 21 in.
Maximum Tool Bit Size................................................................................................................................ 1 in.
Compound Travel........................................................................................................................................ 5 in.
Carriage Travel.......................................................................................................................................... 40 in.
Cross Slide Travel..................................................................................................................................... 13 in.
Spindle Bore........................................................................................................................................... 3.15 in.
Spindle Taper............................................................................................................................................ MT#7
Number of Spindle Speeds............................................................................................................................. 15
Spindle Speeds......................................................................................................................... 24 – 1600 RPM
Spindle Type................................................................................................................................ D1-8 Camlock
Spindle Bearings........................................................................................................................ Tapered Roller
Spindle Length..................................................................................................................................... 28-1/8 in.
Spindle Length with 3-Jaw Chuck.............................................................................................................. 33 in.
Spindle Length with 4-Jaw Chuck....................................................................................................... 32-7/8 in.
Spindle Length with Faceplate............................................................................................................ 29-7/8 in.
Tailstock Quill Travel............................................................................................................................. 4-3/4 in.
Tailstock Taper.......................................................................................................................................... MT#5
Tailstock Barrel Diameter......................................................................................................................... 2.6 in.
Threading Info
Number of Longitudinal Feeds....................................................................................................................... 66
Range of Longitudinal Feeds........................................................................................ 0.0027 – 0.1500 in./rev.
Number of Cross Feeds................................................................................................................................. 66
Range of Cross Feeds................................................................................................... 0.0013 – 0.0750 in./rev
Number of Inch Threads................................................................................................................................. 66
Range of Inch Threads...................................................................................................................... 1 – 56 TPI
Number of Metric Threads.............................................................................................................................. 66
Range of Metric Threads................................................................................................................ 0.5 – 28 mm
Number of Modular Pitches............................................................................................................................ 33
Range of Modular Pitches.............................................................................................................. 0.5 – 3.5 MP
Number of Diametral Pitches.......................................................................................................................... 33
Range of Diametral Pitches................................................................................................................ 8 – 56 DP
Dimensions
Bed Width.................................................................................................................................................. 13 in.
Leadscrew Diameter.............................................................................................................................. 1-3/8 in.
Leadscrew TPI........................................................................................................................................... 4 TPI
Leadscrew Length............................................................................................................................... 59-7/8 in.
Steady Rest Capacity............................................................................................................................ 6-1/4 in.
Follow Rest Capacity............................................................................................................................. 3-7/8 in.
Faceplate Size........................................................................................................................................... 15 in.
Feed Rod Diameter.................................................................................................................................. 7/8 in.
Floor to Center Height....................................................................................................................... 41-5/16 in.
-12-
Model G0746/G0749 (Mfg. Since 3/13)
Construction
Fluid Capacities
Other Specifications:
Country Of Origin ............................................................................................................................................... China
Warranty ........................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time ............................................................................................................. 2 Hours
Serial Number Location ........................................................................................................... ID Label on Headstock
ISO 9001 Factory .................................................................................................................................................. Yes
CSA Certified .......................................................................................................................................................... No
Features:
Full length splash guard
Apron-mounted ON/OFF/reverse spindle lever
Chip tray slides out for easy cleaning
Cast iron stand
Foot brake
Coolant system
Halogen light
Headstock gears run in an oil bath
Jog button and emergency stop
Quick-change tool post
Micrometer stop
Universal gearbox allows cutting of inch, metric threads, and modular and diametral pitches
Base..................................................................................................................................................... Cast Iron
Headstock............................................................................................................................................ Cast Iron
Headstock Gears........................................................................................................................................ Steel
Bed.................................................................................................. Hardened and Precision-Ground Cast Iron
Body..................................................................................................................................................... Cast Iron
Stand.................................................................................................................................................... Cast Iron
Paint......................................................................................................................................................... Epoxy
Headstock Capacity.............................................................................................................................. 12.75 qt.
Headstock Fluid Type................................................................ ISO 32 (eg. Grizzly T23963, Mobil DTE Light)
Gearbox Capacity..................................................................................................................................... 9.5 qt.
Gearbox Fluid Type...................................................................... ISO 68 (eg. Grizzly T23962, Mobil Vactra 2)
Apron Capacity......................................................................................................................................... 6.5 qt.
Apron Fluid Type.......................................................................... ISO 68 (eg. Grizzly T23962, Mobil Vactra 2)
Coolant Capacity.................................................................................................................................. 21.25 qt.
Accessories Included:
Steady rest
Follow rest
15" faceplate
MT#5 dead center
MT#7 to MT#5 sleeve
10" 3-Jaw chuck with 2 sets of jaws
12-1/2" 4-Jaw chuck with reversible jaws
Two change gears
8 leveling pads
4-Way tool post
Tool box
Service tools
Oil gun
Manual
Model G0746/G0749 (Mfg. Since 3/13)
-13-
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-
-14-
Model G0746/G0749 (Mfg. Since 3/13)
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 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 G0746/G0749 (Mfg. Since 3/13)
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.
-15-
Additional Safety for Metal Lathes
Never attempt to slow or stop the lathe spindle with
SPEED RATES. Operating the lathe at the wrong
speed can cause nearby parts to break or the
workpiece to come loose, which will result in dangerous projectiles that could cause severe impact
injuries. Large or non-concentric workpieces must
be turned at slow speeds. Always use the appropriate feed and speed rates.
CHUCK KEY SAFETY. A chuck key left in the
chuck can become a deadly projectile when the
spindle is started. Always remove the chuck key
after using it. Develop a habit of not taking your
hand off of a chuck key unless it is away from the
machine.
SAFE CLEARANCES. Workpieces that crash
into other components on the lathe may throw
dangerous projectiles in all directions, leading to
impact injury and damaged equipment. Before
starting the spindle, make sure the workpiece has
adequate clearance by hand-rotating it through its
entire range of motion. Also, check the tool and
tool post clearance, chuck clearance, and saddle
clearance.
LONG STOCK SAFETY. Long stock can whip
violently if not properly supported, causing serious
impact injury and damage to the lathe. Reduce this
risk by supporting any stock that extends from the
chuck/headstock more than three times its own
diameter. Always turn long stock at slow speeds.
SECURING WORKPIECE. An improperly secured
workpiece can fly off the lathe spindle with deadly
force, which can result in a severe impact injury.
Make sure the workpiece is properly secured in the
chuck or faceplate before starting the lathe.
CHUCKS. Chucks are very heavy and difficult to
grasp, which can lead to crushed fingers or hands
if mishandled. Get assistance when handling
chucks to reduce this risk. Protect your hands and
the precision-ground ways by using a chuck cradle
or piece of plywood over the ways of the lathe
when servicing chucks. Use lifting devices when
necessary.
CLEARING CHIPS. Metal chips can easily cut
bare skin—even through a piece of cloth. Avoid
clearing chips by hand or with a rag. Use a brush
or vacuum to clear metal chips.
STOPPING SPINDLE BY HAND. Stopping the
spindle by putting your hand on the workpiece
or chuck creates an extreme risk of entanglement, impact, crushing, friction, or cutting hazards.
your hand. Allow the spindle to come to a stop on
its own or use the brake.
CRASHES. Aggressively driving the cutting tool or
other lathe components into the chuck may cause
an explosion of metal fragments, which can result
in severe impact injuries and major damage to
the lathe. Reduce this risk by releasing automatic
feeds after use, not leaving lathe unattended, and
checking clearances before starting the lathe.
Make sure no part of the tool, tool holder, compound rest, cross slide, or carriage will contact the
chuck during operation.
COOLANT SAFETY. Coolant is a very poisonous biohazard that can cause personal injury from
skin contact alone. Incorrectly positioned coolant
nozzles can splash on the operator or the floor,
resulting in an exposure or slipping hazard. To
decrease your risk, change coolant regularly and
position the nozzle where it will not splash or end
up on the floor.
TOOL SELECTION. Cutting with an incorrect or
dull tool increases the risk of accidental injury due
to the extra force required for the operation, which
increases the risk of breaking or dislodging components that can cause small shards of metal to
become dangerous projectiles. Always select the
right cutter for the job and make sure it is sharp. A
correct, sharp tool decreases strain and provides
a better finish.
-16 -
Model G0746/G0749 (Mfg. Since 3/13)
Additional 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 G0746/G0749 (Mfg. Since 3/13)
-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 electrican 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 requirements in the following section.
This machine is prewired to operate on a 220V
power supply circuit that has a verified ground and
meets the following requirements:
For your own safety and protection of
Note: The circuit requirements listed in this manual apply to a dedicated circuit—where only one
machine will be running at a time. If this machine
will be connected to a shared circuit where multiple machines will be running at the same time,
consult a qualified electrician to ensure that the
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.)
Availability
supply.
Full-Load Current Rating
Circuit Requirements for 220V
Nominal Voltage ........................................220V
Cycle ..........................................................60 Hz
Phase .................................................... 3-Phase
Power Supply Circuit ......................... 40 Amps
Connection Type ............................... Hardwire
Full-Load Current Rating .............. 30.35 Amps
-18-
property, consult an electrician if you are
unsure about wiring practices or electrical
codes in your area.
Model G0746/G0749 (Mfg. Since 3/13)
Connection Type
A permanently connected (hardwired) power supply is typically installed with wires running through
mounted and secured conduit. A disconnecting
means, such as a locking switch (see following
figure), must be provided to allow the machine
to be disconnected (isolated) from the power
supply when required. This installation must be
performed by an electrician in accordance with all
applicable electrical codes and ordinances.
In the event of a malfunction or breakdown,
grounding provides a path of least resistance
for electrical current to reduce the risk of electric
shock. A permanently connected machine must
be connected to a grounded metal permanent wir
ing system; or to a system having an equipmentgrounding conductor. All grounds must be verified
and rated for the electrical requirements of the
machine. Improper grounding can increase the
risk of electric shock!
Since this machine must be permanently connected to the power supply, an extension cord
cannot be used.
Locking
Disconnect Switch
Power
Source
Ground
Correcting Phase
Polarity
This sub-section is only provided for troubleshooting. If you discover that the lathe will not operate,
or that the spindle runs backwards, the lathe may
be wired out of phase.
Correcting phase polarity requires reversing the
positions where two incoming power source wires
are connected. Due to the high voltage and risk of
serious shock involved, we strongly recommend
Machine
ConduitConduit
Ground
this procedure only be done by an electrician or
qualified service personnel.
To correct the phase polarity of the incoming
power supply:
1. DISCONNECT MACHINE FROM POWER!
Figure 10. Typical setup of a permanently
connected machine.
Grounding Instructions
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.
2. Open electrical box located at back of
machine.
3. Swap the incoming L1 and L2 wire positions
on the terminals shown in Figure 11.
-
Swap Any Two
Wires Here
Figure 11. Swapping power connections to
correct out-of-phase wiring.
3. Close and latch electrical box.
4. Reconnect machine to power supply.
Extension Cords
Model G0746/G0749 (Mfg. Since 3/13)
-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
Preparation
The list below outlines the basic process of preparing your machine for operation. Specific steps
are covered later in this section.
The typical preparation process is as follows:
SUFFOCATION HAZARD!
machine. Discard immediately.
1. Unpack the lathe and inventory the contents
of the box/crate.
2. Clean the lathe and its components.
3. Identify an acceptable location for the lathe
and move it to that location.
4. Level the lathe and bolt it to the floor, or place
it on leveling pads.
5. Assemble the loose components and make
any necessary adjustments or inspections to
ensure the lathe is ready for operation.
6. Check lathe for proper lubrication.
7. Connect the lathe to the power source.
8. Test run lathe to ensure it functions properly.
9. Perform the spindle break-in procedure to
prepare the lathe for operation.
Unpacking
for advice.
Needed for Setup
The following are needed to complete the setup
process, but are not included with your machine.
• For Lifting and Moving:
— A forklift or other power lifting device rated
for at least 6800 lbs.
— Two lifting straps rated for at least 6800 lbs.
each
—1" diameter x 49" long steel barstock
— Two people to guide machine
• For Power Connection:
— A power source that meets the minimum cir-
cuit requirements for this machine (review
Power Supply on Page 18 for details)
— An electrician or qualified service person-
nel to ensure a safe and code-compliant
connection to the power source
• For Assembly:
— Shop rags
— Cleaner/degreaser (see Page 22)
— Quality metal protectant lubricant
— Safety glasses for each person
— Floor mounting hardware as needed (see
Page 25)
— Precision level at least 1" long
-20-
Model G0746/G0749 (Mfg. Since 3/13)
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.
Main Components (Figure 12) Qty.
A. Three-Jaw Chuck 10" (Installed) ................ 1
B. Steady Rest ................................................ 1
C. Follow Rest ................................................. 1
D. 4-Way Tool Post ......................................... 1
E. Backsplash ................................................. 1
F. Ta ils tock ...................................................... 1
Packaged Components (Figure 13)
G. Faceplate 17" ............................................. 1
H. Four-Jaw Chuck 12" ................................... 1
I. Drive Plate .................................................. 1
J. 4-Jaw Chuck Wrench ................................. 1
K. Camlock Studs (6 Installed) ..................... 18
L. Cap Screws M6-1 x 14 (6 Installed) ......... 18
M. Three-Jaw Chuck Outside Jaws ................ 3
N. Spanner Wrenches ..................................... 2
O. Tapered Spindle Sleeve MT-7-#5 ............... 1
P. Standard Dead Centers MT#5 ................... 2
Q. To o l Box ...................................................... 1
R. Spindle Wrench .......................................... 1
S. 3-Jaw Chuck Wrench ................................ 1
T. Tool Post T-Wrench .................................... 1
U. Spare Change Gear 72T ............................ 1
V. Spare Change Gear 36T ............................ 1
W. Wrenches 10/13, 17, 19/24, 36 mm ....... 1 ea
X. Cast Iron Leveling Pads ............................. 8
Y. Hex Wrenches 5, 6, 8, 10 mm ............... 1 ea
Z. Oil Gun ....................................................... 1
AA. Spare Brake Belts ...................................... 2
AB. Leveling Bolts M16-2 x 45 .......................... 8
AC. Hex Nuts M16-2 .......................................... 8
AD. Carriage Handwheel Handle ...................... 1
AE. Cross Slide Handwheel .............................. 1
A
Figure 12. Main components.
G
J
M
N
W
X
AB
AC
Figure 13. Packaged components.
B
O
V
Y
C D E F
H
K
P
TU
Z
AA
AD
I
L
Q
R
S
AE
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.
Model G0746/G0749 (Mfg. Since 3/13)
-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. Avoid
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 14. T23692 Orange Power Degreaser.
Repeat Steps 2–3 as necessary until clean,
then coat all unpainted surfaces with a quality
-22-
Model G0746/G0749 (Mfg. Since 3/13)
Site Considerations
Weight Load
Physical Environment
Place this machine near an existing power source.
Shadows, glare, or strobe effects that may distract
Refer to the Machine Data Sheet for the weight
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.
Children or untrained people
may be seriously injured by
this machine. Only install in an
access restricted location.
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.
Extreme conditions for this type of machinery are
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 other hazards. Make sure to leave access to
a means of disconnecting the power source or
engaging a lockout/tagout device, if required.
Lighting
Lighting around the machine must be adequate
enough that operations can be performed safely.
or impede the operator must be eliminated.
Electrical
Min. 30"
Keep
Workpiece
Loading Area
Unobstructed
= Electrical Connection
Model G0746/G0749 (Mfg. Since 3/13)
Cabinet
Lathe
Figure 15. Minimum working clearances.
Wall
B
A
B
A
Illustration Not To Scale
G0746
112 " 92
1
15
⁄2 " 151⁄2 "
G0749
1
⁄2 "
-23-
Use Blocks to Space Straps Away
from Control Rod, Feed Rod, Leadscrew &
Prevent Bending During Lifting
Lifting & Placing
HEAVY LIF T!
Straining or crushing injury
may occur from improperly
lifting machine or some of
its parts. To reduce this risk,
get help from other people
and use a fork lift (or other
lifting equipment) rated for
weight of this machine.
Do not attempt to lift or move this lathe without
using the proper lifting equipment (such as forklift
or crane) or the necessary assistance from other
people. Each piece of lifting equipment must be
rated for at least 6800 lbs to support dynamic
loads that may be applied while lifting. Refer to
Needed for Setup on Page 20 for details.
6. Insert round steel bar stock through the four
lifting holes (see Figure 16).
Note: To properly support the lathe and
avoid damaging lathe components, bar stock
should be at least 1" diameter thick and 49"
long, so it projects 14" from both sides of the
lathe when installed.
Power Lifting
Equipment
Rear
Lifting
Strap
Front
Lifting
Strap
Bar Stock
To lift and move the lathe:
1. Remove the shipping crate top and sides,
then remove the small components from the
shipping pallet.
2. Move the lathe to its prepared location while
it is still attached to the shipping pallet.
3. Unbolt the lathe from the shipping pallet.
4. To balance the load for lifting, move the
tailstock and carriage to the extreme right
end of the bedway, then lock them in place.
Note: Before attempting to move the car-
riage, make sure the carriage lock is loose,
the half nut is disengaged, and the power
feed is disengaged (feed selection lever).
5. Remove the splash guard so it does not get
damaged when the lathe is raised.
Figure 16. Example of lathe setup for lifting.
7. Attach the lifting straps to the bar stock and
the power lifting equipment (see Figure 16).
Make sure there is enough space between
the straps and the control rod, feed rod,
leadscrew and electrical cabinet to prevent
putting pressure on these components when
lifting.
8. Raise the lathe a couple of inches and check
the balance of the load. Have two other people carefully steady the lathe to help prevent
it from swinging.
— If the load is not safely balanced, immedi-
ately lower the lathe and resolve the issue
before attempting to lift it again.
9. Raise the lathe enough to clear the shipping
pallet and carefully remove the pallet.
— If you plan to use the included leveling
bolts and hex nuts to level the lathe, install
them now.
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10. Lower the lathe into position.
11. Re-install the splash guard.
Model G0746/G0749 (Mfg. Since 3/13)
Anchoring machinery to the floor prevents tipping
or shifting and reduces vibration that may occur
during operation, resulting in a machine that runs
slightly quieter and feels more solid.
If the machine will be installed in a commercial or
workplace setting, or if it is permanently connected (hardwired) to the power supply, local codes
may require that it be anchored to the floor.
If not required by any local codes, fastening the
machine to the floor is an optional step. If you
choose not to do this with your machine, we recommend placing it on machine mounts, as these
provide an easy method for leveling and they have
vibration-absorbing pads.
Anchoring to Floor 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.
Re-check 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. Components on a
machine that is not level may slowly twist due to
the dynamic loads placed on the machine during
Anchoring to Concrete Floors
operation.
Lag shield anchors with lag screws (see below)
are a popular way to anchor machinery to a concrete floor, because the anchors sit flush with the
floor surface, making it easy to unbolt and move
the machine later, if needed. However, anytime
local codes apply, you MUST follow the anchoring
methodology specified by the code.
Lag Screw
Flat Washer
Machine Base
Concrete
Figure 17. Popular method for anchoring
machinery to a concrete floor.
Lag Shield Anchor
Drilled Hole
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 the figure below for an example of a high
precision level offered by Grizzly.
Figure 18. Model H2683 precision level.
Model G0746/G0749 (Mfg. Since 3/13)
-25-
—If using the included leveling pads (see
Figure 19), thread the leveling bolts with
the hex nuts into the bottom of the stand,
place the pads under the bolts, then adjust
them to level the machine.
Assembly
With the exception of the carriage handle and
cross slide handwheel, the lathe is shipped fully
assembled.
Leveling Bolts
x 8
Pads
Figure 19. Leveling pads, bolts (hex nuts not
shown).
For additional leveling, use the jack screws under
the headstock and tailstock (see Figures 20 and
21). To access the tailstock-end jack screws,
remove the coolant motor cover.
Use a 5mm hex wrench to thread the carriage
handle into the carriage handwheel.
Slide the cross slide handwheel onto the shaft
and secure it with the included tapered pin, as
shown in Figure 22.
Cross Slide
Handwheel
Tapered Pin
Carriage Handle
Figure 22. Handwheel handles installed.
Jack Screws
Figure 20. Location of headstock jack screws.
Jack Screws
Figure 21. Tailstock-end jack screws.
— If using mounting hardware that does not
allow for adjustment, level the lathe by
placing metal shims between the lathe
base and the floor before anchoring it.
-26-
Model G0746/G0749 (Mfg. Since 3/13)
Lubricating Lathe
GEARBOXES MUST
BE FILLED WITH OIL!
MACHINE MAY NOT BE
SHIPPED WITH OIL!
Requires Oil
Before Operation
or Warranty Will
Be Void.
Power Connection
Electrocution or fire
may occur if machine is
ungrounded, incorrectly
connected to power, or
connected to an undersized
circuit. Use an electrician
or a qualified service
personnel to ensure a safe
power connection.
The headstock, gearbox, and apron oil reservoirs
must have the proper amount of oil in them before
the lathe can be operated.
Damage caused to the bearings and gears from
running the lathe without oil in the reservoirs
will not be covered under warranty. Refer to the
Lubrication section, beginning on Page 67, for
checking and adding oil.
In addition to the reservoirs, we also recommend
that you lubricate all other points on the machine
at this time. To do this, follow the steps provided in
the maintenance schedule on Page 66.
Note: If this lathe was shipped with oil in the res-
ervoirs, do not change that oil until after the Test
Run and Spindle Break-In procedures.
Adding Coolant
Add the coolant of your choice now. For detailed
instructions on where the coolant tank is located
and how to add fluid, refer to Coolant System
Service on Page 72.
Before the machine can be connected to the
power source, an electrical circuit and connection
device must be prepared according to the circuit
requirements on the Page 18, and the machine
must be completely setup and installed in its permanent location.
Once the lathe is connected to the power supply,
the disconnect switch that is installed by the electrician (as recommended) is the primary means
for disconnecting or connecting the machine to
the power source.
Note About Phase Converters: Due to the
startup load from this machine, we do not recommend using a static phase converter to create
3-phase power—as it can quickly decrease the
life of electrical components on this machine. If
you must use a phase converter, only use a rotary
phase converter. Only connect the manufactured
leg or "wild wire" to the L3 terminal (see location in Figure 24 on Page 28). The L3 terminal
can handle power fluctuation because it is wired
directly to the motor.
Model G0746/G0749 (Mfg. Since 3/13)
-27-
To connect lathe to power:
1. Make sure the main power switch on the
lathe electrical cabinet is turned to the OFF
position, then open the door.
2. Insert the incoming power wires through the
opening shown in Figure 23.
Opening for
Incoming Power
Test Run
Once the assembly is complete, test run your
machine to make sure it runs properly and is
ready for regular operation.
The test run consists of verifying:
• The motor powers up and runs correctly.
• The motor turns in the correct direction
(machine is not wired out of phase).
• The safety features work correctly.
• The brake system works correctly.
Figure 23. Location of opening in electrical
cabinet for incoming power.
3. Connect the incoming hot wires to the L1,
L2, and L3 terminals, shown in Figure 24.
Connect the incoming ground to the grounding terminal (PE).
L3 L2 L1 PE
Figure 24. Location to connect incoming hot
wires and ground wire.
• The coolant system works correctly.
If you notice an unusual noise or vibration, stop
using the machine immediately, and remedy
before operating it further.
Before starting the lathe, make sure you
have performed the preceding assembly
and adjustment instructions, and you have
read all the documentation provided with the
lathe and are familiar with the various functions and safety features on this machine.
Failure to follow this warning could result in
serious personal injury or even death!
To test run your machine:
1. Make sure the main power switch (see
Figure 25) is turned OFF.
4. Make sure the wires have enough slack so
they are not pulled tight or stretched.
5. Close the main electrical cabinet door.
-28-
Main Power
Switch
Figure 25. Location of the main power switch.
Model G0746/G0749 (Mfg. Since 3/13)
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