Grizzly T33901 User manual

COPYRIGHT © SEPTEMBER, 2023 BY GRIZZLY INDUSTRIAL, INC., REVISED DECEMBER, 2023 (CS)
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#CS22848 PRINTED IN CHINA V1.12.23
MODEL T33901/T33902
14" DRILL PRESS w/LED &
LASER GUIDE
OWNER'S MANUAL
(For models manufactured since 07/23)
***Keep for Future Reference***

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 (T33901) ...................... 6
Machine Data Sheet (T33902) ...................... 8
SECTION 1: SAFETY..................................... 10
Safety Instructions for Machinery ................ 10
Additional Safety for Drill Presses ............... 12
SECTION 2: POWER SUPPLY ...................... 13
SECTION 3: SETUP ....................................... 15
Needed for Setup......................................... 15
Unpacking .................................................... 15
Inventory ...................................................... 16
Cleanup........................................................ 17
Site Considerations...................................... 17
Bench Mounting (T33901) ........................... 18
Anchoring to Floor (T33902)........................ 18
Assembly ..................................................... 19
Joining Drill Chuck & Arbor.......................... 21
Test Run....................................................... 22
Spindle Break-In .......................................... 23
SECTION 4: OPERATIONS............................ 24
Operation Overview ..................................... 24
Installing/Removing Arbor............................ 25
Choosing Spindle Speed ............................. 27
Changing Spindle Speed ............................. 28
Installing/Removing Drill Bit ......................... 29
Adjusting Depth Stop ................................... 29
Positioning Table.......................................... 30
Adjusting Laser Guide ................................. 31
SECTION 5: ACCESSORIES ......................... 32
SECTION 6: MAINTENANCE......................... 33
Schedule ...................................................... 33
Cleaning & Protecting .................................. 33
Lubrication ................................................... 33
SECTION 7: SERVICE ................................... 35
Troubleshooting ........................................... 35
Adjusting Return Spring Tension ................. 38
Aligning Motor Pulley ................................... 39
Calibrating Depth Stop................................. 40
Replacing Laser Modules & LED................. 41
Adjusting Quill Shaft Lock Screw................. 42
SECTION 8: WIRING...................................... 43
Wiring Safety Instructions ............................ 43
Wiring Diagram............................................ 44
Electrical Component Photos ...................... 45
SECTION 9: PARTS ....................................... 46
T33901 Main................................................ 46
T33902 Main................................................ 49
Labels & Cosmetics ..................................... 52
WARRANTY & RETURNS.............................. 53

-2- Model T33901/T33902 (Mfd. Since 07/23)
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: [e-mail]
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: [e-mail]
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

Model T33901/T33902 (Mfd. Since 07/23) -3-
Identification
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.
For Your Own Safety Read Instruction Manual Before Operating Drill Press
a) Wear eye protection.
b) Do not wear gloves, necktie, or loose clothing.
c) Clamp workpiece or brace against column to prevent rotation.
d) Use recommended speed for drill accessory and workpiece material.
Chuck Guard
Motor
Belt Cover
Base
Column
Table
Chuck
Table Height
Crank
ON/OFF Switch
w/Disabling Key
Downfeed Handle
(1 of 3)
Belt Tension
Lever
Spindle Return
Spring Depth
Stop
Belt Tension
Lock Knob
(1 of 2)
Table Pivot
Lock Handle
Table Height
Lock Handle
Laser & LED
Switches
LED &
Laser Guide
(T33901 Shown)

-4- Model T33901/T33902 (Mfd. Since 07/23)
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.
Power Controls
A. LED Switch: Turns LED ON or OFF.
B. ON/OFF Switch w/Disabling Key: Turns
motor ON when moved up; turns motor OFF
when moved down. Removal of yellow key
disables switch so motor cannot start.
C. Laser Switch: Turns laser guide ON or OFF.
A
B
C
Spindle Speed
D. Spindle Pulley: Holds V-belt and transfers
motor power from idler pulley to spindle.
E. V-Belts: Control spindle speed.
F. Idler Pulley: Holds V-belts and transfers
motor power from motor pulley to spindle
pulley.
G. Motor Pulley: Holds V-belt and transfers
motor power to idler pulley.
EG
F
E
D
Figure 1. Power controls.
Figure 2. Spindle speed components.
H. Chuck Key: Adjusts jaws on chuck for drill bit
changes.
I. Belt Tension Lever: Adjusts motor position
to tension and release belts for changing
spindle speed, and for servicing.
Headstock
J
H
I
K
Figure 3. Right headstock components.

Model T33901/T33902 (Mfd. Since 07/23) -5-
L. Belt Tension Lock Knob (1 of 2): Locks
motor position.
M. Depth Stop: Stops spindle travel at prede-
termined drilling depth. Top of depth stop nut
indicates depth on scale.
N. Spindle Return Spring: Automatically
returns quill into headstock.
Table
Q. Table Pivot Lock Handle: Loosens to allow
rotation of table; tightens to lock table rotation.
R. Table Height Crank: Adjusts table up and
down.
R
J. Downfeed Handle (1 of 3): Moves spindle
down when pulled down. Spindle automati-
cally returns to top position when released.
K. Chuck: Accepts drill bits with shanks from
1⁄8"–5⁄8".
Figure 4. Left headstock components.
O. LED: Illuminates work area.
P. Laser Guide: Projects crosshairs on table to
align workpiece to drill bit.
LED & Laser Guide
Figure 5. LED and laser guide.
L
M
NQ
T
S
S. Tilt Scale: Displays current table tilt angle.
T. Table Height Lock Handle: Loosens to
allow adjustment of table position on column;
tightens to lock table position.
O
P
Figure 6. Right table components.
Figure 7. Left table components.

-6- Model T33901/T33902 (Mfd. Since 07/23)
The information contained herein is deemed accurate as of 12/27/2023 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 2
Model T33901
MACHINE DATA
SHEET
Customer Service #: [phone] · To Order Call: [phone] · Fax #: [phone]
MODEL T33901 14" BENCHTOP DRILL PRESS WITH LED
LIGHT & LASER GUIDE
Product Dimensions:
Weight.............................................................................................................................................................. 108 lbs.
Width (side-to-side) x Depth (front-to-back) x Height..................................................................... 15 x 25-1/2 x 39 in.
Footprint (Length x Width)..................................................................................................................... 18 x 10-1/2 in.
Shipping Dimensions:
Type............................................................................................................................................................. Cardboard
Content........................................................................................................................................................... Machine
Weight.............................................................................................................................................................. 116 lbs.
Length x Width x Height....................................................................................................................... 36 x 23 x 14 in.
Must Ship Upright................................................................................................................................................... Yes
Electrical:
Power Requirement........................................................................................................... 120V, Single-Phase, 60 Hz
Full-Load Current Rating....................................................................................................................................... 7.5A
Minimum Circuit Size.............................................................................................................................................. 15A
Connection Type....................................................................................................................................... Cord & Plug
Power Cord Included.............................................................................................................................................. Yes
Power Cord Length.............................................................................................................................................. 70 in.
Power Cord Gauge......................................................................................................................................... 16 AWG
Plug Included.......................................................................................................................................................... Yes
Included Plug Type................................................................................................................................................ 5-15
Switch Type...................................................................................................... Paddle Safety Switch w/Disabling Key
Motors:
Main
Horsepower............................................................................................................................................. 3/4 HP
Phase............................................................................................................................................ Single-Phase
Amps........................................................................................................................................................... 7.5A
Speed................................................................................................................................................ 1720 RPM
Type................................................................................................................. TEFC Capacitor-Start Induction
Power Transfer ......................................................................................................................................... Direct
Bearings..................................................................................................... Shielded & Permanently Lubricated
Main Specifications:
Operation Information
Type......................................................................................................................................................... Bench
Swing......................................................................................................................................................... 14 in.
Spindle Taper............................................................................................................................................ MT#2
Spindle Travel........................................................................................................................................ 3-1/4 in.
Max. Distance From Spindle to Column...................................................................................................... 7 in.
Max. Distance From Spindle to Table................................................................................................. 15-7/8 in.
Number of Spindle Speeds............................................................................................................................. 12
Range of Spindle Speeds......................................................................................................... 340 - 2860 RPM
Drilling Capacity (Mild Steel)..................................................................................................................... 5/8 in.
Drilling Capacity (Cast Iron)...................................................................................................................... 3/4 in.
Drill Chuck Type......................................................................................................................... JT3 Key Chuck
Drill Chuck Size................................................................................................................................ 1/8 - 5/8 in.
Machine Data Sheet (T33901)
MODEL T33901
14" BENCHTOP DRILL PRESS W/LED & LASER GUIDE

Model T33901/T33902 (Mfd. Since 07/23) -7-
The information contained herein is deemed accurate as of 12/27/2023 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 2
Model T33901
Spindle Information
Distance From Spindle to Base........................................................................................................... 23-3/8 in.
Quill Diameter......................................................................................................................................... 1.85 in.
Table Information
Max. Table Tilt (Left/Right)................................................................................................................ 0 - 45 deg.
Table Swing.......................................................................................................................................... 360 deg.
Table Swivel Around Center................................................................................................................. 360 deg.
Table Swivel Around Column............................................................................................................... 360 deg.
Table Length........................................................................................................................................ 11-1/4 in.
Table Width......................................................................................................................................... 11-1/4 in.
Table Thickness.................................................................................................................................. 1-1/16 in.
Vertical Table Travel............................................................................................................................ 14-3/8 in.
Number of T-Slots............................................................................................................................................ 4
T-Slot Size.............................................................................................................................................. 9/16 in.
Floor-To-Table Height.................................................................................................................... 9-5/8 - 24 in.
Construction
Table....................................................................................................................... Precision-Ground Cast Iron
Column....................................................................................................................................................... Steel
Spindle Housing................................................................................................................................... Cast Iron
Head.................................................................................................................................................... Cast Iron
Base..................................................................................................................................................... Cast Iron
Paint Type/Finish....................................................................................................................... Powder Coated
Other Related Information
Base Length............................................................................................................................................... 18 in.
Base Width.......................................................................................................................................... 10-1/2 in.
Column Diameter................................................................................................................................... 3-1/8 in.
Quill Flange/Collar Diameter................................................................................................................. 2-1/8 in.
Quill Hold Type...................................................................................................................... Slotted Set Screw
Depth Stop Type................................................................................................ Threaded Rod w/Positive Stop
Has Work Light............................................................................................................................................. Yes
Light Socket Type................................................................................................................................ LED 12V
Maximum Bulb Wattage................................................................................................................................ 3W
Has Laser Guide.......................................................................................................................................... Yes
Laser Classification................................................................................................................................ Class II
Laser Wavelength................................................................................................................................... 650 nm
Laser Maximum Output.............................................................................................................................. 1mW
Other Specifications:
Country of Origin ................................................................................................................................................ China
Warranty ........................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time ........................................................................................................ 30 Minutes
Serial Number Location ................................................................................................................... Machine ID Label
ISO 9001 Factory .................................................................................................................................................. Yes
Features:
Hand-Crank Enabled Rack and Pinion Table Elevation
11-1/4" x 11-1/4" Cast Iron Table w/Four 9/16" T-Slots
Built-In LED Light
Adjustable Class II Laser Sights
3-1/4" Spindle Travel
360 Deg. Table Positioning Around Column
Cast Iron Base w/Two 5/8" T-Slots, 5-1/4" on Center
12 Speed Settings: 340, 500, 530, 660, 740, 790, 1380, 1420, 1680, 1860, 2200, 2860 RPM
JT3 Key Chuck 1/8" - 5/8"

-8- Model T33901/T33902 (Mfd. Since 07/23)
Machine Data Sheet (T33902)
The information contained herein is deemed accurate as of 12/27/2023 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 2
Model T33902
MACHINE DATA
SHEET
Customer Service #: [phone] · To Order Call: [phone] · Fax #: [phone]
MODEL T33902 14" FLOOR DRILL PRESS WITH LED LIGHT
& LASER GUIDE
Product Dimensions:
Weight.............................................................................................................................................................. 126 lbs.
Width (side-to-side) x Depth (front-to-back) x Height............................................................... 15 x 25-1/2 x 61-1/2 in.
Footprint (Length x Width)..................................................................................................................... 18 x 10-1/2 in.
Shipping Dimensions:
Type..................................................................................................................................................... Cardboard Box
Content........................................................................................................................................................... Machine
Weight.............................................................................................................................................................. 133 lbs.
Length x Width x Height....................................................................................................................... 46 x 23 x 14 in.
Must Ship Upright................................................................................................................................................... Yes
Electrical:
Power Requirement............................................................................................................ 120V, Single-Phase, 60Hz
Full-Load Current Rating....................................................................................................................................... 7.5A
Minimum Circuit Size.............................................................................................................................................. 15A
Connection Type....................................................................................................................................... Cord & Plug
Power Cord Included.............................................................................................................................................. Yes
Power Cord Length.............................................................................................................................................. 70 in.
Power Cord Gauge......................................................................................................................................... 16 AWG
Plug Included.......................................................................................................................................................... Yes
Included Plug Type................................................................................................................................................ 5-15
Switch Type...................................................................................................... Paddle Safety Switch w/Disabling Key
Motors:
Main
Horsepower............................................................................................................................................. 3/4 HP
Phase............................................................................................................................................ Single-Phase
Amps........................................................................................................................................................... 7.5A
Speed................................................................................................................................................ 1720 RPM
Type................................................................................................................. TEFC Capacitor-Start Induction
Power Transfer ............................................................................................................................................ Belt
Bearings..................................................................................................... Shielded & Permanently Lubricated
Main Specifications:
Operation Information
Type........................................................................................................................................................... Floor
Swing......................................................................................................................................................... 14 in.
Spindle Taper............................................................................................................................................ MT#2
Spindle Travel....................................................................................................................................... 3-1/4 in.
Max. Distance From Spindle to Column...................................................................................................... 7 in.
Max. Distance From Spindle to Table................................................................................................. 26-3/8 in.
Number of Spindle Speeds............................................................................................................................. 12
Range of Spindle Speeds......................................................................................................... 340 - 2860 RPM
Drilling Capacity (Mild Steel)..................................................................................................................... 5/8 in.
Drilling Capacity (Cast Iron)...................................................................................................................... 3/4 in.
Drill Chuck Type......................................................................................................................... JT3 Key Chuck
Drill Chuck Size................................................................................................................................ 1/8 - 5/8 in.
MODEL T33902
14" FLOOR DRILL PRESS W/LED & LASER GUIDE

Model T33901/T33902 (Mfd. Since 07/23) -9-
The information contained herein is deemed accurate as of 12/27/2023 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 2
Model T33902
Spindle Information
Distance From Spindle to Base........................................................................................................... 45-3/4 in.
Quill Diameter....................................................................................................................................... 1.847 in.
Table Information
Max. Table Tilt (Left/Right)................................................................................................................ 0 - 45 deg.
Table Swing.......................................................................................................................................... 360 deg.
Table Swivel Around Center................................................................................................................. 360 deg.
Table Swivel Around Column............................................................................................................... 360 deg.
Max. Movement of Work Table............................................................................................................ 22-1/4 in.
Table Length........................................................................................................................................ 11-1/4 in.
Table Width......................................................................................................................................... 11-1/4 in.
Table Thickness.................................................................................................................................. 1-1/16 in.
Vertical Table Travel..................................................................................................................... Crank Handle
Number of T-Slots............................................................................................................................................ 4
T-Slot Size.............................................................................................................................................. 9/16 in.
Floor-To-Table Height............................................................................................................ 21-1/2 - 43-3/4 in.
Construction
Table....................................................................................................................... Precision-Ground Cast Iron
Column....................................................................................................................................................... Steel
Spindle Housing................................................................................................................................... Cast Iron
Head.................................................................................................................................................... Cast Iron
Base..................................................................................................................................................... Cast Iron
Paint Type/Finish...................................................................................................................... Powder Coated
Other Related Information
Base Length............................................................................................................................................... 18 in.
Base Width.......................................................................................................................................... 10-1/2 in.
Column Diameter................................................................................................................................... 3-1/8 in.
Quill Hold Type...................................................................................................................... Slotted Set Screw
Depth Stop Type................................................................................................ Threaded Rod w/Positive Stop
Has Work Light............................................................................................................................................. Yes
Light Socket Type................................................................................................................................ LED 12V
Maximum Bulb Wattage................................................................................................................................ 3W
Has Laser Guide.......................................................................................................................................... Yes
Laser Classification................................................................................................................................ Class II
Laser Wavelength................................................................................................................................... 650 nm
Laser Maximum Output.............................................................................................................................. 1mW
Other Specifications:
Country of Origin ................................................................................................................................................ China
Warranty ........................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time ........................................................................................................ 30 Minutes
Serial Number Location ................................................................................................................... Machine ID Label
ISO 9001 Factory .................................................................................................................................................. Yes
Features:
Hand-Crank Enabled Rack and Pinion Table Elevation
11-1/4" x 11-1/4" Cast Iron Table w/Four 9/16" T-Slots
Built-In LED Light
Adjustable Class II Laser Sights
3-1/4" Spindle Travel
360 Deg. Table Positioning Around Column
Cast Iron Base w/Two 3/4" T-Slots, 5-1/4" on Center
12 Speed Settings: 340, 500, 530, 660, 740, 790, 1380, 1420, 1680, 1860, 2200, 2860 RPM
JT3 Key Chuck 1/8" - 5/8"

-10- Model T33901/T33902 (Mfd. Since 07/23)
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.
Always discon-
nect machine from power supply BEFORE mak-
ing adjustments, changing tooling, or servicing
machine. This prevents an injury risk from unin-
tended startup or contact with live electrical com-
ponents.
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.
OWNER’S MANUAL. Read and understand this
owner’smanualBEFOREusingmachine.
TRAINED OPERATORS ONLY.Untrained oper-
ators have a higher risk of being hurt or killed.
Only allow trained/supervised people to use this
machine. When machine is not being used, dis-
connect power, remove switch keys, or lock-out
machine to prevent unauthorized use—especially
around children. Make your 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 machin-
ery. Never operate under the influence of drugs or
alcohol, when tired, or when distracted.
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 impor-
tance 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 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.
Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.
Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.
Alerts the user to useful information about proper operation of the
machine to avoid machine damage.
NOTICE
Safety Instructions for Machinery
SECTION 1: SAFETY

Model T33901/T33902 (Mfd. Since 07/23) -11-
WEARING PROPER APPAREL. Do not wear
loose clothing, gloves, neckties, or jewelry that
can become entangled in moving parts. Always tie
back or cover long hair. Wear non-slip footwear to
reduce risk of slipping and losing control or acci-
dentally contacting cutting tool or moving parts.
HAZARDOUS DUST. Dust created by machinery
operations may cause cancer, birth defects, or
long-term respiratory damage. Be aware of dust
hazards associated with each workpiece mate-
rial. Always wear a NIOSH-approved respirator to
reduce your risk.
HEARING PROTECTION. Always wear hear-
ing protection when operating or observing loud
machinery. Extended exposure to this noise with-
out 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 modifica-
tions—modifying tool or using it differently than
intended may result in malfunction or mechanical
failure that can lead to personal injury or death!
AWKWARD POSITIONS. Keep proper footing
and balance at all times when operating machine.
Do not overreach! Avoid awkward hand positions
that make workpiece control difficult or increase
the risk of accidental injury.
CHILDREN & BYSTANDERS. Keep children and
bystanders at a safe distance from the work area.
Stop using machine if they become a distraction.
GUARDS & COVERS. Guards and covers reduce
accidental contact with moving parts or flying
debris. Make sure they are properly installed,
undamaged, and working correctly BEFORE
operating machine.
FORCING MACHINERY. Do not force machine.
It will do the job safer and better at the rate for
which it was designed.
NEVER STAND ON MACHINE. Serious injury
may occur if machine is tipped or if the cutting
tool is unintentionally contacted.
STABLE MACHINE. Unexpected movement dur-
ing 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rec-
ommended accessories. Using improper acces-
sories will increase the risk of serious injury.
UNATTENDED OPERATION. To reduce the
risk of accidental injury, turn machine OFF and
ensure all moving parts completely stop before
walking away. Never leave machine running
while unattended.
MAINTAIN WITH CARE. Follow all maintenance
instructions and lubrication schedules to keep
machine in good working condition. A machine
that is improperly maintained could malfunction,
leading to serious personal injury or death.
DAMAGED PARTS. Regularly inspect machine
for damaged, loose, or mis-adjusted parts—or
any condition that could affect safe operation.
Immediately repair/replace BEFORE operating
machine. For your own safety, DO NOT operate
machine with damaged parts!
MAINTAIN POWER CORDS. When disconnect-
ing cord-connected machines from power, grab
and pull the plug—NOT the cord. Pulling the cord
may damage the wires inside. Do not handle
cord/plug with wet hands. Avoid cord damage by
keeping it away from heated surfaces, high traffic
areas, harsh chemicals, and wet/damp locations.
EXPERIENCING DIFFICULTIES. If at any time
you experience difficulties performing the intend-
ed operation, stop using the machine! Contact our
Technical Support at [phone].

-12- Model T33901/T33902 (Mfd. Since 07/23)
Additional Safety for Drill Presses
Serious injury or death can occur from getting clothing, jewelry, or long hair entangled in
rotating spindle or bit/cutting tool. Contact with rotating bit/cutting tool can result in severe cuts
or amputation of fingers. Flying metal chips can cause blindness or eye injuries. Broken bits/
cutting tools, unsecured workpieces, chuck keys, or other adjustment tools thrown from rotating
spindle can strike nearby operator or bystanders with deadly force. To reduce the risk of these
hazards, operator and bystanders MUST completely heed hazards and warnings below.
DRILLING PREPARATION.
To avoid loss of
drilling control or bit breakage, only drill into a flat
surface that is approximately perpendicular to
bit. Clear table of all objects before starting spin-
dle. Never start spindle with bit pressed against
workpiece.
SECURING TABLE AND HEADSTOCK. To avoid
loss of control leading to accidental contact with
tool/bit, tighten all table and headstock locks
before operating drill press.
WORKPIECE CONTROL.An unsecured work-
piece may unexpectedly shift, spin out of con-
trol, or be thrown if bit/cutting tool “grabs” during
operation. Clamp workpiece to table or in table-
mounted vise, or brace against column to prevent
rotation. NEVER hold workpiece by hand during
operation. NEVER start machine with bit/cutting
tool touching workpiece; allow spindle to gain full
speed before drilling.
INSPECTING BIT/CUTTING TOOL. Damaged
bits/cutting tools may break apart during operation
and hit operator or bystanders. Dull bits/cutting
tools increase cutting resistance and are more
likely to grab and spin/throw workpiece. Always
inspect bits/cutting tools for sharpness, chips, or
cracks before each use. Replace dull, chipped, or
cracked bits/cutting tools immediately.
EYE/FACE/HAND PROTECTION.Flying chips
created by drilling can cause eye injuries or blind-
ness. Always wear a face shield in addition to
safety glasses. Always keep hands and fingers
away from drill bit/cutting tool. Avoid awkward
hand positions, where a sudden slip could cause
hand to move into bit/cutting tool.
AVOIDING ENTANGLEMENT. DO NOT wear
loose clothing, gloves, or jewelry. Tie back long
hair. Keep all guards in place and secure. Always
allow spindle to stop on its own. DO NOT stop
spindle using your hand or any other object.
REMOVING ADJUSTMENT TOOLS.Chuck key,
wrenches, and other tools left on machine can
become deadly projectiles when spindle is started.
Remove all loose items or tools used on spindle
immediately after use.
CORRECT SPINDLE SPEED. Using wrong spin-
dle speed can cause bits/cutting tools to break
and strike operator or bystanders. Follow recom-
mended speeds and feeds for each size/type of
bit/cutting tool and workpiece material.
SECURING BIT/CUTTING TOOL.Firmly secure
bit/cutting tool in chuck so it cannot fly out of
spindle during operation or startup.
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.
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.

Model T33901/T33902 (Mfd. Since 07/23) -13-
SECTION 2: POWER SUPPLY
Availability
Before installing the machine, consider the avail-
ability and proximity of the required power supply
circuit. If an existing circuit does not meet the
requirements for this machine, a new circuit must
be installed. To minimize the risk of electrocution,
fire, or equipment damage, installation work and
electrical wiring must be done by an electrician or
qualified service personnel in accordance with all
applicable codes and standards.
Electrocution, fire, shock,
or equipment damage
may occur if machine is
not properly grounded
and connected to power
supply.
Full-Load Current Rating
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.
Full-Load Current Rating at 120V .... 7.5 Amps
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 over-
loading the machine during operation and make
sure it is connected to a power supply circuit that
meets the specified circuit requirements.
For your own safety and protection of
property, consult an electrician if you are
unsure about wiring practices or electrical
codes in your area.
Note: Circuit requirements in this manual apply to
a dedicated circuit—where only one machine will
be running on the circuit at a time. If machine will
be connected to a shared circuit where multiple
machines may be running at the same time, con-
sult an electrician or qualified service personnel to
ensure circuit is properly sized for safe operation.
A power supply circuit includes all electrical
equipment between the breaker box or fuse panel
in the building and the machine. The power sup-
ply 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.)
120V Circuit Requirements
This machine is prewired to operate on a power
supply circuit that has a verified ground and meets
the following requirements:
Serious injury could occur if you connect
machine to power before completing setup
process. DO NOT connect to power until
instructed later in this manual.
Nominal Voltage .................... 110V, 115V, 120V
Cycle ..........................................................60 Hz
Phase ........................................... Single-Phase
Power Supply Circuit ......................... 15 Amps
Plug/Receptacle ............................. NEMA 5-15

-14- Model T33901/T33902 (Mfd. Since 07/23)
Improper connection of the equipment-grounding
wire can result in a risk of electric shock. The
wire with green insulation (with or without yellow
stripes) is the equipment-grounding wire. If repair
or replacement of the power cord or plug is nec-
essary, do not connect the equipment-grounding
wire to a live (current carrying) terminal.
Check with a qualified electrician or service per-
sonnel if you do not understand these grounding
requirements, or if you are in doubt about whether
the tool is properly grounded. If you ever notice
that a cord or plug is damaged or worn, discon-
nect it from power, and immediately replace it with
a new one.
Extension Cords
We do not recommend using an extension cord
with this machine. If you must use an extension
cord, only use it if absolutely necessary and only
on a temporary basis.
Extension cords cause voltage drop, which can
damage electrical components and shorten motor
life. Voltage drop increases as the extension cord
size gets longer and the gauge size gets smaller
(higher gauge numbers indicate smaller sizes).
Any extension cord used with this machine must
be in good condition and contain a ground wire
and matching plug/receptacle. Additionally, it must
meet the following size requirements:
Minimum Gauge Size ...........................16 AWG
Maximum Length (Shorter is Better).......50 ft.
Grounding & Plug Requirements
Figure 8. Typical 5-15 plug and receptacle.
Grounding Pin
Neutral Hot
5-15 PLUG
GROUNDED
5-15 RECEPTACLE
SHOCK HAZARD!
Two-prong outlets do not meet the
grounding requirements for this machine.
Do not modify or use an adapter on the plug
provided—if it will not fit the outlet, have a
qualified electrician install the proper outlet
with a verified ground.
This machine MUST be grounded. In the event
of certain malfunctions or breakdowns, grounding
reduces the risk of electric shock by providing a
path of least resistance for electric current.
This machine is equipped with a power cord that
has an equipment-grounding wire and a grounding
plug. Only insert plug into a matching receptacle
(outlet) that is properly installed and grounded in
accordance with all local codes and ordinances.
DO NOT modify the provided plug!

Model T33901/T33902 (Mfd. Since 07/23) -15-
SECTION 3: SETUP
This machine presents
serious injury hazards
to untrained users. Read
through this entire manu-
al to become familiar with
the controls and opera-
tions before starting the
machine!
Wear safety glasses during
the entire setup process!
HEAVY LIFT!
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 forklift (or other
lifting equipment) rated for
weight of this machine.
Description Qty
• Safety Glasses (for each person)..........1 Pr.
• Cleaner/Degreaser ..................... As Needed
• Acetone/Lacquer Thinner........... As Needed
• Disposable Rags ........................ As Needed
• Disposable Gloves ..................... As Needed
• Lifting Equipment
(Rated for at least 175 lbs.) ........................ 1
• Another Person .......................................... 1
• Wrench or Socket 17mm ............................ 1
• Open-End Wrench 7mm............................. 1
• Phillips Head Screwdriver #2 ..................... 1
• Plumb Bob.................................................. 1
• Ruler or Measuring Tape............................ 1
• Marker ........................................................ 1
• Block of Wood ............................................ 1
• Mounting Hardware .................... As Needed
Needed for Setup
The following items are needed, but not included,
for the setup/assembly of this machine.
This machine was carefully packaged for safe
transport. When unpacking, separate all enclosed
items from packaging materials and inspect them
for shipping damage.
If items are damaged
,
please
call us immediately at [phone].
IMPORTANT: Save all packaging materials until
you are completely satisfied with the machine and
have resolved any issues between Grizzly or the
shipping agent. You MUST have the original pack-
aging to file a freight claim. It is also extremely
helpful if you need to return your machine later.
Unpacking

-16- Model T33901/T33902 (Mfd. Since 07/23)
NOTICE
If you cannot find an item on this list, care-
fully check around/inside the machine and
packaging materials. Often, these items get
lost in packaging materials while unpack-
ing or they are pre-installed at the factory.
Box 1 (Figure 9) Qty
A. Headstock .................................................. 1
B. Column Assembly (T33902)....................... 1
C. Column Assembly (T33901)....................... 1
D. Table ........................................................... 1
E. Table Support Bracket................................ 1
F. Base (T33901)............................................ 1
G. Base (T33902)............................................ 1
H. Downfeed Handles ..................................... 3
I. Table Height Crank..................................... 1
J. Chuck Guard .............................................. 1
K. Combo Wrench 24mm ............................... 1
L. Drill Chuck JT3 1⁄8"–5⁄8".............................. 1
M. Arbor MT#2 x JT3 ...................................... 1
N. Drift Key...................................................... 1
O. Drill Chuck Key........................................... 1
P. Hex Wrenches 3, 4, 5mm.....................1 Ea.
Q. Hex Bolts M10-1.5 x 25 (T33901) ............... 4
Hex Bolts M10-1.5 x 30 (T33902)............... 4
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.
Figure 9. Inventory.
AB
C
D
E
F
G
H
I J
K L MN
OQ P

Model T33901/T33902 (Mfd. Since 07/23) -17-
Figure 10. Minimum working clearances.
25½"
Electrical
Connection
=
15"
Wall
Min. 30"
=
Cleanup
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 preven-
tative, but the following steps work well in a wide
variety of situations. Always follow the manufac-
turer’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.
Put on safety glasses.
2. Coat the rust preventative with a liberal
amount of cleaner/degreaser, then let it soak
for 5–10 minutes.
3.
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.
4.
Repeat Steps 2–3
as necessary until clean,
then coat all unpainted surfaces with a quality
metal protectant to prevent rust.
NOTICE
Avoid harsh solvents like acetone or brake
parts cleaner that may damage painted sur-
faces. Always test on a small, inconspicu-
ous location first.
Children and visitors may be
seriously injured if unsuper-
vised around this machine.
Lock entrances to the shop
or disable start switch or
power connection to prevent
unsupervised use.
Site Considerations
Workbench Load
Refer to the Machine Data Sheet for the weight
and footprint specifications of your machine.
Some workbenches may require additional rein-
forcement to support the weight of the machine
and workpiece materials.
Consider anticipated workpiece sizes and addi-
tional space needed for auxiliary stands, work
tables, or other machinery when establishing a
location for this machine in the shop. Below is
the minimum amount of space needed for the
machine.
Placement Location

-18- Model T33901/T33902 (Mfd. Since 07/23)
Bench Mounting
(T33901)
Figure 11. "Through Mount" setup.
Number of Mounting Holes ............................ 2
Diameter of Mounting Hardware Needed .. 1⁄2"
Figure 12. "Direct Mount" setup.
Anchoring to Floor
(T33902)
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 connect-
ed (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 rec-
ommend placing it on machine mounts, as these
provide an easy method for leveling and they have
vibration-absorbing pads.
Lag shield anchors with lag screws (see below)
are a popular way to anchor machinery to a con-
crete 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.
Machine Base
Concrete
Lag Screw
Lag Shield Anchor
Flat Washer
Drilled Hole
Figure 13. Popular method for anchoring
machinery to a concrete floor.
Anchoring to Concrete Floors
Number of Mounting Holes ............................ 4
Diameter of Mounting Hardware................. 1⁄2"
The T33901 base has holes that allow it to be
fastened to a workbench or other mounting
surface to prevent it from moving during operation
and causing accidental injury or damage.
The strongest mounting option is a "Through
Mount" (see example below) where holes are
drilled all the way through the workbench—and
hex bolts, washers, and hex nuts are used to
secure the machine in place.
Machine Base
Workbench
Hex
Bolt
Flat Washer
Flat Washer
Lock Washer
Hex Nut
Machine Base
Workbench
Lag Screw
Flat Washer
Another option is a "direct mount" (see example
below) where the machine is secured directly to
the workbench with lag screws and washers.