Grizzly G0935 User manual

COPYRIGHT © SEPTEMBER, 2021 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.
#AICS21883 PRINTED IN CHINA V1.09.21
MODEL G0935
1-1/2 HP MILL/DRILL
w/POWER HEAD & STAND
OWNER'S MANUAL
(For models manufactured since 04/21)

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 compre-
hension, 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 equip-
ment, such as those dust masks that are specially designed to filter
out microscopic particles.

Table of Contents
INTRODUCTION............................................... 2
Contact Info.................................................... 2
Manual Accuracy ........................................... 2
Identification ................................................... 3
Controls & Components ................................. 4
Machine Data Sheet ...................................... 6
SECTION 1: SAFETY....................................... 9
Safety Instructions for Machinery .................. 9
Additional Safety for Mill/Drills ..................... 11
SECTION 2: POWER SUPPLY ...................... 12
SECTION 3: SETUP ....................................... 14
Needed for Setup ......................................... 14
Unpacking .................................................... 14
Inventory ...................................................... 15
Cleanup ........................................................ 16
Site Considerations ...................................... 17
Lifting & Placing ........................................... 18
Anchoring to Floor ....................................... 18
Assembly ..................................................... 19
Power Connection........................................ 19
Test Run ...................................................... 20
Spindle Bearing Break-In ............................. 23
SECTION 4: OPERATIONS ........................... 24
Operation Overview ..................................... 24
Using Spindle Downfeed ............................. 25
Controlling Table Travel ............................... 27
Adjusting Headstock .................................... 28
Joining New Drill Chuck & Arbor ................. 29
Removing/Installing Tooling ......................... 29
Setting Spindle Speed ................................. 31
SECTION 5: ACCESSORIES ......................... 33
SECTION 6: MAINTENANCE......................... 36
Schedule ...................................................... 36
Cleaning and Protecting .............................. 36
Lubrication ................................................... 37
Replacing Spindle Depth DRO Battery ........ 38
SECTION 7: SERVICE ................................... 39
Troubleshooting ........................................... 39
Adjusting Gibs .............................................. 43
Adjusting Leadscrew Backlash .................... 44
Replacing Brushes ....................................... 45
SECTION 8: WIRING...................................... 47
Wiring Safety Instructions ............................ 47
Main Wiring Overview .................................. 48
Control Panel Wiring .................................... 49
Column Wiring ............................................. 50
Z-Axis Motor & Limit Switch Wiring ............. 51
3-Axis DRO & Sensors Wiring ..................... 52
Headstock Cover Safety Switch
& LED Worklight Wiring ............................... 53
Power Feed Wiring Overview ...................... 54
Power Feed Wiring ...................................... 55
SECTION 9: PARTS....................................... 56
Headstock .................................................... 56
Column ......................................................... 58
Cabinet & Controls ....................................... 60
Table ............................................................ 61
Stand & Accessories .................................... 63
Labels & Cosmetics ..................................... 64
WARRANTY & RETURNS ............................. 65

-2- Model G0935 (Mfd. Since 04/21)
We stand behind our machines! If you have ques-
tions or need help, contact us with the information
below. Before contacting, make sure you get the
serial number
and manufacture date from the
machine ID label. This will help us help you faster.
Grizzly Technical Support
1815 W. Battlefield
Springfield, MO 65807
Phone: [phone]
Email: [email protected]
We want your feedback on this manual. What did
you like about it? Where could it be improved?
Please take a few minutes to give us feedback.
Grizzly Documentation Manager
P.O. Box 2069
Bellingham, WA 98227-2069
Email: [email protected]
Contact Info
We are proud to provide a high-quality owner’s
manual with your new machine!
We
made every effort to be exact with the
instruc-
tions, specifications, drawings, and photographs
in this manual. Sometimes we make mistakes, but
our policy of continuous improvement also means
that
sometimes the machine
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
e post
current
manuals and
manual updates for free
on our web-
site at
www.grizzly.com.
Alternatively, you can call our Technical Support
for help. Before calling, make sure you write
down the
manufacture date and
serial number
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.
Manufacture Date
Serial Number
Manual Accuracy
INTRODUCTION
Like all machinery there is potential danger
when operating this machine. Accidents
are frequently caused by lack of familiarity
or failure to pay attention. Use this machine
with respect and caution to decrease the
risk of operator injury. If normal safety pre-
cautions are overlooked or ignored, seri-
ous personal injury may occur.
No list of safety guidelines can be com-
plete. Every shop environment is different.
Always consider safety first, as it applies
to your individual working conditions. Use
this and other machinery with caution and
respect. Failure to do so could result in
serious personal injury, damage to equip-
ment, or poor work results.

Model G0935 (Mfd. Since 04/21) -3-
Identification
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.
A. Z-Axis Lock Handle
B. Z-Axis Controls
C. Spindle Control Panel
D. Drawbar Cover
E. 3-Axis DRO
F. Fine Downfeed Knob
G. Coarse Downfeed Handle
H. Downfeed Selector Handle
I. Chuck
J. Spindle Depth DRO
K. Spindle
L. Table
M. X-Axis Handwheel
N. X-Axis Adjustable Travel Limit Stops
O. Y-Axis Lock Handle
P. Y-Axis Handwheel
Q. X-Axis Lock Handle
R. Power Feed Limit Switch
S. Leadscrew Selector Knob
T. X-Axis Power Feed and Controls
U. LED Worklight
V. Quill Lock
D
C
B
M
P
S
V
L
Q
U
E
F
A
G
H
I
N
R
N
T
J
K
O

-4- Model G0935 (Mfd. Since 04/21)
Controls &
Components
To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.
Refer to the following figures and descriptions to
become familiar with the basic controls and com-
ponents of this machine. Understanding these
items and how they work will help you understand
the rest of the manual and minimize your risk of
injury when operating this machine.
G. Spindle Speed Tachometer: Shows spindle
speed from 80–5000 RPM.
H. FAULT Indicator: Illuminates if an operation
fault occurs, if E-STOP button is pressed, or
if headstock cover is removed. Headstock
cover must be in place to operate spindle.
Reset FAULT by resetting E-STOP button.
I. Spindle Speed Dial: Rotate to turn spindle
ON and OFF; varies spindle speed from
80–1700 RPM when belt is positioned for
low speed range; varies spindle speed from
280–5000 RPM when belt is positioned for
high speed range.
J. E-STOP Button: Press to stop spindle rota-
tion and disable power to spindle control
panel. Twist clockwise to reset.
K. FWD/OFF/REV Switch: Turn to FWD (1) to
rotate spindle clockwise. Turn to REV (2) to
rotate spindle counterclockwise. Turn to OFF
(0) to stop spindle.
A. 3-Axis DRO Display: Shows location and
movement of table and headstock along X-,
Y-, and Z-axes to within 0.001" or 0.001mm.
Measurements can be recorded starting any-
where along axis movement.
B. : Press to zero selected axis.
C. : Press to toggle between mm and inches.
D. : Press to toggle between absolute or rela-
tive measurement for selected axis.
E. : Button has no function on this machine.
F. : Press to change selected axis.
3-Axis DRO
A
B FEDC
Figure 1. 3-axis DRO.
Figure 2. Spindle control panel.
Spindle Control Panel
G
HI
K
J

Model G0935 (Mfd. Since 04/21) -5-
Headstock Controls
X-Axis Power Feed Controls
V. Direction Switch: Moves table left and right.
Center toggle position stops power feed
motor.
W. Power Indicator: Glows green when power
feed is connected to power supply.
X. Speed Control Dial: Rotate to turn power
feed ON and OFF. Varies power feed motor
speed from 0–240 RPM.
Y. Leadscrew Selector Knob: Rotate to
engage or release power feed drive gear.
Z. Fault Indicator: Illuminates when power
feed encounters fault or when power feed
limit switch is activated. Reset by turning
speed control dial to 0.
Figure 5. Power feed controls.
V
X
Y
W
L. Z-Axis Lock Handle: Tighten to lock head-
stock in position.
M. Z-Axis Controls: Moves headstock up or
down.
N. Quill Lock Screw: Use with supplied quill
lock hex wrench to secure quill in place for
increased stability during operations.
Figure 3. Z-axis controls.
L
N
M
Figure 4. Spindle depth and headstock controls.
O
T
P
U
R
S
Q
O. Fine Downfeed Knob: Manually controls
rate of fine spindle downfeed.
P. Coarse Downfeed Handle: Pull down for
fast spindle downfeed with drilling operations;
features spring-loaded spindle return.
Q. Downfeed Selector Handle: Rotate
to engage fine spindle control for milling
operations.
R. ZERO Button: Press to zero Spindle Depth
DRO anywhere along its travel.
S. Spindle Depth DRO OFF/ON Button: Press to
turn Spindle Depth DRO display ON and OFF.
T. mm/inch Button: Press to toggle Spindle
Depth DRO between inches and millimeters.
U. Spindle Depth DRO: Displays spindle travel
and depth.
Z

-6- Model G0935 (Mfd. Since 04/21)
Machine Data Sheet
The information contained herein is deemed accurate as of 9/28/2021 and represents our most recent product specifications.
Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. PAGE 1 OF 3
Model G0935
MACHINE DATA
SHEET
Customer Service #: [phone] · To Order Call: [phone] · Fax #: [phone]
MODEL G0935 7" X 29" 1‐1/2 HP MILL/DRILL WITH POWER
HEAD ELEVATION AND DRO
Product Dimensions:
Weight.............................................................................................................................................................. 353 lbs.
Width (side-to-side) x Depth (front-to-back) x Height............................................................... 37-1/2 x 32 x 68-1/2 in.
Footprint (Length x Width)............................................................................................................... 20-1/2 x 11-1/2 in.
Shipping Dimensions:
Type.......................................................................................................................................................... Wood Crate
Content........................................................................................................................................................... Machine
Weight.............................................................................................................................................................. 574 lbs.
Length x Width x Height....................................................................................................................... 47 x 37 x 81 in.
Must Ship Upright................................................................................................................................................... Yes
Electrical:
Power Requirement........................................................................................................... 110V, Single-Phase, 60 Hz
Full-Load Current Rating........................................................................................................................................ 12A
Minimum Circuit Size.............................................................................................................................................. 15A
Connection Type....................................................................................................................................... Cord & Plug
Power Cord Included.............................................................................................................................................. Yes
Power Cord Length.............................................................................................................................................. 60 in.
Power Cord Gauge......................................................................................................................................... 14 AWG
Plug Included.......................................................................................................................................................... Yes
Included Plug Type................................................................................................................................................ 5-15
Switch Type................................................................................ Forward/Reverse Switch w/Emergency Stop Button
Motors:
Main
Horsepower.......................................................................................................................................... 1-1/2 HP
Amps............................................................................................................................................................ 12A
Speed................................................................................................................................................ 4000 RPM
Type.................................................................................................................................................... DC Motor
Power Transfer ............................................................................................................................................ Belt
Bearings........................................................................................................ Sealed & Permanently Lubricated
Z-Axis
Horsepower................................................................................................................................................. 25W
Phase............................................................................................................................................ Single-Phase
Amps........................................................................................................................................................... 0.6A
Speed................................................................................................................................................ 1500 RPM
Type.......................................................................................................................................... TENV Induction
Power Transfer ......................................................................................................................................... Direct
Bearings........................................................................................................ Sealed & Permanently Lubricated
MODEL G0935
1-1/2 HP MILL/DRILL W/POWER HEAD & STAND

Model G0935 (Mfd. Since 04/21) -7-
The information contained herein is deemed accurate as of 9/28/2021 and represents our most recent product specifications.
Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. PAGE 2 OF 3
Model G0935
Main Specifications:
Operation Info
Spindle Travel...................................................................................................................................... 3-5/64 in.
Max Distance Spindle to Column........................................................................................................ 9-1/16 in.
Max Distance Spindle to Table............................................................................................................ 12-5/8 in.
Longitudinal Table Travel (X-Axis).................................................................................................. 19-11/16 in.
Cross Table Travel (Y-Axis).................................................................................................................. 7-7/8 in.
Vertical Head Travel (Z-Axis).............................................................................................................. 13-3/8 in.
Drilling Capacity for Cast Iron................................................................................................................ 1-1/8 in.
Drilling Capacity for Steel......................................................................................................................... 3/4 in.
End Milling Capacity................................................................................................................................. 3/4 in.
Face Milling Capacity........................................................................................................................ 1-15/16 in.
Table Info
Table Length........................................................................................................................................ 29-1/8 in.
Table Width......................................................................................................................................... 7-1/16 in.
Table Thickness.................................................................................................................................. 2-1/16 in.
Table Height (from Floor/Base)........................................................................................................... 7-1/16 in.
Table Weight Capacity........................................................................................................................... 110 lbs.
Number of T-Slots............................................................................................................................................ 3
T-Slot Size............................................................................................................................................ 15/32 in.
T-Slots Centers.................................................................................................................................... 2-1/16 in.
X-Axis Table Power Feed Rate............................................................................................................ 0.001 in.
X/Y-Axis Travel per Handwheel Revolution.............................................................................................. 0.1 in.
Spindle Info
Spindle Taper............................................................................................................................................... R-8
Number of Vertical Spindle Speeds.................................................................................................... 2 Ranges
Range of Vertical Spindle Speeds.......................................................................... 80 - 1700, 280 - 5000 RPM
Quill Diameter......................................................................................................................................... 2.36 in.
Drawbar Thread Size............................................................................................................................. 7/16-20
Drawbar Length............................................................................................................................... 10-13/16 in.
Spindle Bearings................................................................................................ Angular Contact Ball Bearings
Construction
Spindle Housing/Quill........................................................................................................................... Cast Iron
Table.................................................................................................................................................... Cast Iron
Head.................................................................................................................................................... Cast Iron
Column/Base....................................................................................................................................... Cast Iron
Base..................................................................................................................................................... Cast Iron
Stand.................................................................................................................................................... Cast Iron
Paint Type/Finish....................................................................................................................... Powder Coated
Other Specifications:
Country of Origin ................................................................................................................................................ China
Warranty ........................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time .............................................................................................................. 1 Hour
Serial Number Location .................................................................................................................................. ID Label
ISO 9001 Factory .................................................................................................................................................. Yes

-8- Model G0935 (Mfd. Since 04/21)
The information contained herein is deemed accurate as of 9/28/2021 and represents our most recent product specifications.
Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. PAGE 3 OF 3
Model G0935
Features:
18" Swing
Bright LED Worklight
Includes Cabinet Stand w/Built-In Storage
Digital Spindle Depth DRO w/0.001" Resolution
Magnetic Tool Holder
Front-Mounted Emergency Stop Button
3-Axis DRO w/0.001" Resolution
Digital RPM Display
0-240 RPM Variable-Speed X-Axis Power Feed
30W 2A DC Motor w/1800 RPM Inside Power Feed
R-8 Spindle
Two Variable-Speed Spindle Ranges: 80 - 1700 and 280 - 5000 RPM
Three 12mm T-slots
3" Spindle Stroke w/Fine Downfeed
3/4" Drilling Capacity in Steel
1-1/8" Drilling Capacity in Cast Iron
Motorized Head Elevation
Handwheel Dials with 0.001" Graduations
Accessories Included:
JT6 Drill Chuck 1-16mm