WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#CS20663 PRINTED IN CHINA
V2 .11. 2 3
Page 2
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.
We stand behind our machines! If you have questions or need help, contact us with the information
below. Before contacting, make sure you get the
serial number
from the
machine ID label. This will help us help you faster.
We want your feedback on this manual. What did
you like about it? Where could it be improved?
Please take a few minutes to give us feedback.
Email: manuals@grizzly.com
We are proud to provide a high-quality owner’s
manual with your new machine!
We
instructions, specifications, drawings, and photographs
in this manual. Sometimes we make mistakes, but
our policy of continuous improvement also means
that
you receive is
slightly different than shown in the manual
If you find this to be the case, and the difference
between the manual and machine leaves you
confused or unsure about something
check our
website for an updated version. W
current
manuals and
on our web-
site at
Alternatively, you can call our Technical Support
for help. Before calling, make sure you write
down the
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.
INTRODUCTION
Contact Info
and manufacture date
Grizzly Technical Support
1815 W. Battlefield
Springfield, MO 65807
Phone: (570) 546-9663
Email: techsupport@grizzly.com
Grizzly Documentation Manager
P.O. Box 2069
Bellingham, WA 98227-2069
Manual Accuracy
made every effort to be exact with the
sometimes the machine
.
,
e post
manual updates for free
www.grizzly.com.
manufacture date and
Manufacture Date
Serial Number
-2-
Model T31739 (Mfd. Since 11/23)
Page 5
Identification
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.
Belt Cover
Digital
Readout
Depth Stop
Scale
Adjustable
Depth Stop
Emergency
Stop Button
Laser & Light
Switches
Spindle
Column
Base
Spindle Speed
Quill
Rack
Workpiece
Support
Crank Handle
Motor
Lever
Return Spring
Table Height
Lock Handle
Table Height
ON/OFF
Buttons
Downfeed
Handle
Spindle
Chuck
Table
Table Pivot
Lock Handle
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.
Model T31739 (Mfd. Since 11/23)
-3-
Page 6
Controls &
To reduce your risk of
serious injury, read this
entire manual BEFORE
Table
Components
using machine.
Refer to the following figures and descriptions to
become familiar with the basic controls and components 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.
Headstock
Adjustable
Depth Stop
Depth Scale
Workpiece
Support
Table Pivot
Lock Handle
Figure 2. Table controls.
Workpiece Support: Provides extra support for
long workpieces.
Table Height Crank Handle: Adjusts table height.
Table Pivot Lock Handle: Locks table to keep it
from rotating.
Workpiece Support Lock Knob (1 of 2): Locks
support arm in position.
Workpiece
Support
Lock Knob
Table Height
Crank Handle
Spindle Speed
Lever
Spindle
Return Spring
Downfeed Handle
Figure 1. Headstock controls.
Adjustable Depth Stop: Stops spindle travel at
predetermined depth.
Depth Scale: Indicates drilling depth and position
of depth stop.
Downfeed Handles: Moves spindle down when
pulled down. Spindle automatically returns to top
position when released.
Spindle Speed Lever: Adjusts spindle speed
rate from 400 to 2700 RPM.
Quill
Control Panel
Emergency
Stop Button
ON/OFF Buttons
LED ON/OFF
Switch
Figure 3. Control panel.
Emergency Stop Button: Immediately cuts
power to motor and control panel when pressed.
Twist button clockwise to reset.
ON/OFF Buttons: Turns drill press ON and OFF.
LED ON/OFF Switch: Turns work light ON or
OFF.
Digital
Readout
Laser
ON/OFF
Switch
Spindle Return Spring: Automatically returns
quill into headstock.
Quill: Houses spindle and spindle bearings.
-4-
Digital Readout: Displays spindle RPM.
Laser ON/OFF Switch: Turns laser sights ON or
OFF.
Model T31739 (Mfd. Since 11/23)
Page 7
Machine Data Sheet
MACHINE DATA
SHEET
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901
Width (side-to-side) x Depth (front-to-back) x Height........................................................................... 13 x 22 x 36 in.
Footprint (Length x Width)....................................................................................................................... 16 x 9-1/2 in.
Length x Width x Height....................................................................................................................... 30 x 20 x 12 in.
Electrical:
Power Requirement........................................................................................................... 120V, Single-Phase, 60 Hz
Full-Load Current Rating....................................................................................................................................... 5.1A
Power Cord Included.............................................................................................................................................. Yes
Power Cord Length................................................................................................................................................. 6 ft.
Power Cord Gauge......................................................................................................................................... 18 AWG
Included Plug Type................................................................................................................................................ 5-15
Horsepower............................................................................................................................................. 1/3 HP
Power Transfer ............................................................................................................................................ Belt
Swing......................................................................................................................................................... 12 in.
Spindle Travel........................................................................................................................................ 3-1/2 in.
Max. Distance From Spindle to Column...................................................................................................... 6 in.
Max. Distance From Spindle to Table................................................................................................. 13-1/4 in.
Number of Spindle Speeds................................................................................................................... Variable
Range of Spindle Speeds......................................................................................................... 400 - 2700 RPM
Max. Head Swivel................................................................................................................................. 360 deg.
Drilling Capacity (Mild Steel)..................................................................................................................... 5/8 in.
Drill Chuck Size.............................................................................................................................. 1/32 - 5/8 in.
Model T31739 (Mfd. Since 11/23)
-5-
Page 8
Spindle Information
Distance From Spindle to Base........................................................................................................... 20-1/4 in.
Quill Diameter....................................................................................................................................... 1.575 in.
Table Swivel Around Center................................................................................................................. 360 deg.
Table Swivel Around Column............................................................................................................... 360 deg.
Table Length.......................................................................................................................................... 9-5/8 in.
Table Width........................................................................................................................................... 9-5/8 in.
Table Thickness........................................................................................................................................... 1 in.
Vertical Table Travel.................................................................................................................................. 10 in.
Number of T-Slots............................................................................................................................................ 4
T-Slot Size................................................................................................................................................ 1/2 in.
T-Slot Centers.............................................................................................................................................. 3 in.
Floor-To-Table Height.............................................................................................................. 8-7/8 - 18-7/8 in.
Construction
Table....................................................................................................................... Precision-Ground Cast Iron
Spindle Housing................................................................................................................................... Cast Iron
Head.................................................................................................................................................... Cast Iron
Base..................................................................................................................................................... Cast Iron
Base Length........................................................................................................................................ 16-1/4 in.
Base Width............................................................................................................................................ 9-5/8 in.
Column Diameter................................................................................................................................... 2-3/8 in.
Depth Stop Type............................................................................................ Threaded Rod with Positive Stop
Has Work Light............................................................................................................................................. Yes
Light Socket Type...................................................................................................................... 3.5V, LED Bulb
Maximum Bulb Wattage............................................................................................................................... 1 W
Other Specifications:
Country of Origin ................................................................................................................................................ China
Warranty ........................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time ........................................................................................................ 45 Minutes
Serial Number Location .................................................................................................................................. ID Label
ISO 9001 Factory .................................................................................................................................................. Yes
Features:
Adjustable Laser Sight
Four 1/2" T-Slots
Variable-Speed Spindle Control from 400 - 2700 RPM
Precision-Ground Cast-Iron Table w/7-1/4" Extension
LED Worklight
Spindle Speed Digital Readout
Depth Stop 0-90mm w/Quick-Release
Rack & Pinion Table Elevation Control
Accessories Included:
Hex Wrenches 3, 4, 5mm
Drift Key
-6-
Model T31739 (Mfd. Since 11/23)
Page 9
SECTION 1: SAFETY
For Your Own Safety, Read Instruction
Manual Before Operating This Machine
The purpose of safety symbols is to attract your attention to possible hazardous conditions.
This manual uses a series of symbols and signal words intended to convey the level of importance of the safety messages. The progression of symbols is described below. Remember that
safety messages by themselves do not eliminate danger and are not a substitute for proper
accident prevention measures. Always use common sense and good judgment.
Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
MAY result in minor or moderate injury. It may also be used to alert
against unsafe practices.
Alerts the user to useful information about proper operation of the
NOTICE
machine to avoid machine damage.
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 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 machinery. Never operate under the influence of drugs or
alcohol, when tired, or when distracted.
ELECTRICAL EQUIPMENT INJURY RISKS.
You can be shocked, burned, or killed by touching
live electrical components or improperly grounded
machinery. To reduce this risk, only allow qualified
service personnel to do electrical installation or
repair work, and always disconnect power before
accessing or exposing electrical equipment.
DISCONNECT POWER FIRST.
nect machine from power supply BEFORE making adjustments, changing tooling, or servicing
machine. This prevents an injury risk from unintended startup or contact with live electrical components.
EYE PROTECTION. Always wear ANSI-approved
safety glasses or a face shield when operating
or observing machinery to reduce the risk of eye
injury or blindness from flying particles. Everyday
eyeglasses are NOT approved safety glasses.
Always discon-
Model T31739 (Mfd. Since 11/23)
-7-
Page 10
may damage the wires inside. Do not handle
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 accidentally contacting cutting tool or moving parts.
HAZARDOUS DUST. Dust created by machinery
operations may cause cancer, birth defects, or
long-term respiratory damage. Be aware of dust
hazards associated with each workpiece material. Always wear a NIOSH-approved respirator to
reduce your risk.
HEARING PROTECTION. Always wear hearing protection when operating or observing loud
machinery. Extended exposure to this noise without hearing protection can cause permanent
hearing loss.
REMOVE ADJUSTING TOOLS. Tools left on
machinery can become dangerous projectiles
upon startup. Never leave chuck keys, wrenches,
or any other tools on machine. Always verify
removal before starting!
USE CORRECT TOOL FOR THE JOB. Only use
this tool for its intended purpose—do not force
it or an attachment to do a job for which it was
not designed. Never make unapproved modifications—modifying tool or using it differently than
intended may result in malfunction or mechanical
failure that can lead to personal injury or death!
AWKWARD POSITIONS. Keep proper footing
and balance at all times when operating machine.
Do not overreach! Avoid awkward hand positions
that make workpiece control difficult or increase
the risk of accidental injury.
CHILDREN & BYSTANDERS. Keep children and
bystanders at a safe distance from the work area.
Stop using machine if they become a distraction.
GUARDS & COVERS. Guards and covers reduce
accidental contact with moving parts or flying
debris. Make sure they are properly installed,
undamaged, and working correctly BEFORE
operating machine.
FORCING MACHINERY. Do not force machine.
It will do the job safer and better at the rate for
which it was designed.
NEVER STAND ON MACHINE. Serious injury
may occur if machine is tipped or if the cutting
tool is unintentionally contacted.
STABLE MACHINE. Unexpected movement during operation greatly increases risk of injury or
loss of control. Before starting, verify machine is
stable and mobile base (if used) is locked.
USE RECOMMENDED ACCESSORIES. Consult
this owner’s manual or the manufacturer for rec-
ommended accessories. Using improper accessories will increase the risk of serious injury.
UNATTENDED OPERATION. To reduce the
risk of accidental injury, turn machine OFF and
ensure all moving parts completely stop before
walking away. Never leave machine running
while unattended.
MAINTAIN WITH CARE. Follow all maintenance
instructions and lubrication schedules to keep
machine in good working condition. A machine
that is improperly maintained could malfunction,
leading to serious personal injury or death.
DAMAGED PARTS. Regularly inspect machine
for damaged, loose, or mis-adjusted parts—or
any condition that could affect safe operation.
Immediately repair/replace BEFORE operating
machine. For your own safety, DO NOT operate
machine with damaged parts!
MAINTAIN POWER CORDS. When disconnecting cord-connected machines from power, grab
and pull the plug—NOT the cord. Pulling the cord
cord/plug with wet hands. Avoid cord damage by
keeping it away from heated surfaces, high traffic
areas, harsh chemicals, and wet/damp locations.
EXPERIENCING DIFFICULTIES. If at any time
you experience difficulties performing the intended operation, stop using the machine! Contact our
Technical Support at (570) 546-9663.
-8-
Model T31739 (Mfd. Since 11/23)
Page 11
Additional Safety for Drill Presses
To avoid loss of
drilling control or bit breakage, only drill into a flat
surface that is approximately perpendicular to
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.
EYE/FACE/HAND PROTECTION. Flying chips
created by drilling can cause eye injuries or blindness. 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 spindle speed can cause bits/cutting tools to break
and strike operator or bystanders. Follow recommended 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.
DRILLING PREPARATION.
bit. Clear table of all objects before starting spindle. Never start spindle with bit pressed against
workpiece.
SECURING TABLE AND HEADSTOCK. To avoid
loss of control leading to bit breakage or accidental
contact with tool/bit, tighten all table and headstock locks before operating drill press.
WORKPIECE CONTROL. An unsecured workpiece may unexpectedly shift, spin out of control, or be thrown if bit/cutting tool “grabs” during
operation. Clamp workpiece to table or in tablemounted 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 into workpiece.
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.
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 precautions are overlooked or ignored, serious personal injury may occur.
Model T31739 (Mfd. Since 11/23)
No list of safety guidelines can be complete. 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 equipment, or poor work results.
-9-
Page 12
SECTION 2: POWER SUPPLY
Before installing the machine, consider the availability and proximity of the required power supply
circuit. If an existing circuit does not meet the
requirements for this machine, a new circuit must
be installed. To minimize the risk of electrocution,
fire, or equipment damage, installation work and
electrical wiring must be done by an electrician or
qualified service personnel in accordance with all
applicable codes and standards.
or equipment damage
may occur if machine is
not properly grounded
and connected to power
The full-load current rating is the amperage a
machine draws at 100% of the rated output power.
On machines with multiple motors, this is the
amperage drawn by the largest motor or sum of all
motors and electrical devices that might operate
at one time during normal operations.
The full-load current is not the maximum amount
of amps that the machine will draw. If the machine
is overloaded, it will draw additional amps beyond
the full-load rating.
If the machine is overloaded for a sufficient length
of time, damage, overheating, or fire may result—
especially if connected to an undersized circuit.
To reduce the risk of these hazards, avoid overloading the machine during operation and make
sure it is connected to a power supply circuit that
meets the specified circuit requirements.
For your own safety and protection of
Note: Circuit requirements in this manual apply to
a dedicated circuit—where only one machine will
be running on the circuit at a time. If machine will
be connected to a shared circuit where multiple
machines may be running at the same time, consult an electrician or qualified service personnel to
ensure circuit is properly sized for safe operation.
A power supply circuit includes all electrical
equipment between the breaker box or fuse panel
in the building and the machine. The power supply circuit used for this machine must be sized to
safely handle the full-load current drawn from the
machine for an extended period of time. (If this
machine is connected to a circuit protected by
fuses, use a time delay fuse marked D.)
This machine is prewired to operate on a power
supply circuit that has a verified ground and meets
the following requirements:
Availability
Electrocution, fire, shock,
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.
120V Circuit Requirements
Nominal Voltage .................... 110V, 115V, 120V
property, consult an electrician if you are
unsure about wiring practices or electrical
codes in your area.
Model T31739 (Mfd. Since 11/23)
Page 13
Improper connection of the equipment-grounding
wire can result in a risk of electric shock. The
wire with green insulation (with or without yellow
stripes) is the equipment-grounding wire. If repair
or replacement of the power cord or plug is necessary, do not connect the equipment-grounding
wire to a live (current carrying) terminal.
Check with a qualified electrician or service personnel if you do not understand these grounding
requirements, or if you are in doubt about whether
the tool is properly grounded. If you ever notice
that a cord or plug is damaged or worn, disconnect it from power, and immediately replace it with
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:
Grounding & Plug Requirements
Two-prong outlets do not meet the
grounding requirements for this machine.
provided—if it will not fit the outlet, have a
This machine MUST be grounded. In the event
of certain malfunctions or breakdowns, grounding
reduces the risk of electric shock by providing a
path of least resistance for electric current.
This machine is equipped with a power cord that
has an equipment-grounding wire and a grounding
plug. Only insert plug into a matching receptacle
(outlet) that is properly installed and grounded in
accordance with all local codes and ordinances.
DO NOT modify the provided plug!
GROUNDED
5-15 RECEPTACLE
Grounding Pin
5-15 PLUG
Extension Cords
Neutral Hot
Figure 4. Typical 5-15 plug and receptacle.
SHOCK HAZARD!
Do not modify or use an adapter on the plug
qualified electrician install the proper outlet
with a verified ground.
This machine was carefully packaged for safe
transport. When unpacking, separate all enclosed
items from packaging materials and inspect them
for shipping damage.
,
please
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.
The following items are needed, but not included,
for the setup/assembly of this machine.
This machine and its
components are very
heavy. Get lifting help or
ment such as a forklift to
Needed for Setup
This machine presents
serious injury hazards
to untrained users. Read
through this entire manual to become familiar with
the controls and operations before starting the
machine!
Wear safety glasses during
the entire setup process!
Description Qty
• Safety Glasses (for each person) ............... 1
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.
B
A
D
C
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.
Box 1 (Figure 5) Qty
A. Table Assembly .......................................... 1
B. Headstock Assembly .................................. 1
C. Downfeed Handles ..................................... 3
D. Speed Lever ............................................... 1
E. Column Assembly ...................................... 1
F. Chuck 1⁄32"-5⁄8" JT3 Keyless ........................ 1
G. Chuck Arbor JT3 x MT2 ............................. 1
H. Table Lock Handles .................................... 2
I. Table Height Crank Handle ........................ 1
J. Drift Key ...................................................... 1
K. Hex Wrenches 3, 4, 5mm .....................1 Ea.
L. Hex Bolts M8-1.25 x 20 .............................. 4
M. Base ........................................................... 1
E
F
Figure 5. T31739 loose parts inventory.
G
J
K
L
H
M
I
Model T31739 (Mfd. Since 11/23)
-13-
Page 16
Hardware Recognition Chart
USE THIS CHART TO MATCH UP
HARDWARE DURING THE INVENTORY
AND ASSEMBLY PROCESS.
Flat
Head
Cap
Screw
-14-
5mm
5mm
Model T31739 (Mfd. Since 11/23)
Page 17
CleanupSite Considerations
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 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.
2. Coat the rust preventative with a liberal
amount of cleaner/degreaser, then let it soak
3.
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
4.
as necessary until clean,
then coat all unpainted surfaces with a quality
or disable start switch or
Refer to the Machine Data Sheet for the weight
and footprint specifications of your machine.
Some workbenches may require additional reinforcement to support the weight of the machine
and workpiece materials.
Consider anticipated workpiece sizes and additional 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.
Workbench Load
Placement Location
22"
13"
Put on safety glasses.
for 5–10 minutes.
Wipe off the surfaces. If your cleaner/degreas-
off the rest with the rag.
Repeat Steps 2–3
metal protectant to prevent rust.
NOTICE
Avoid harsh solvents like acetone or brake
parts cleaner that may damage painted surfaces. Always test on a small, inconspicuous location first.
Model T31739 (Mfd. Since 11/23)
= Electrical Connection
Figure 6. Minimum working clearances.
Children and visitors may be
seriously injured if unsupervised around this machine.
Lock entrances to the shop
power connection to prevent
unsupervised use.
-15-
Page 18
Bench Mounting
Another option is a "direct mount" (see example
below) where the machine is secured directly to
the workbench with lag screws and washers.
The base of this machine has mounting 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.
The machine must be fully assembled before it
can be operated. Before beginning the assembly
process, refer to
and gather
all
To ensure the assembly process
goes smoothly, first clean any
covered or coated in heavy-duty rust preventative (if
applicable).
Assembly
Number of Mounting Holes
Diameter of Mounting Hardware Needed
Machine Base
Workbench
............................ 4
Hex
Bolt
Flat Washer
..1⁄2"
Needed for Setup
listed items.
parts that are
To assemble machine:
Attach column to base using (4) M8-1.25 x 20
1.
hex bolts (see Figure 9).
x 4
Figure 9. Column attached to base.
Flat Washer
Lock Washer
-16-
Figure 7. "Through Mount" setup.
Machine Base
Workbench
Figure 8. "Direct Mount" setup.
Hex Nut
Lag Screw
Flat Washer
The headstock is very
heavy. You MUST have
assistance when moving,
lifting, or mounting the
headstock on the column
and base assembly.
2. Lift headstock and fit it onto top of column
(see Figure 10).
Figure 10. Headstock placed on column.
Model T31739 (Mfd. Since 11/23)
Page 19
3. Suspend a plumb bob from center of
headstock spindle so it is over tape/ruler, as
shown in Figure 11.
4. Center headstock directly over base
as indicated by plumb bob and ruler
(see Figure 11).
Figure 11. Example of using plumb bob to align
headstock to base.
Attach table height crank handle to table arm
6.
(see Figure 13) and secure by tightening
pre-installed set screw against worm shaft.
Table Arm
Figure 13. Table height crank handle attached to
table arm.
7.Thread (1) table height lock handle into worm
gear housing cartridge (see Figure14) and
tighten until table arm will not move.
Worm Shaft
5. Tighten (2) pre-installed set screws to secure
headstock to column (see Figure 12).
x 2
Figure 12. Location of set screws that secure
headstock to column.
Table Height
Lock Handle
Table Arm
Worm Gear
Housing
Figure 14. Table height lock handle inserted into
cartridge.
Install table into table mounting arm (see
8.
Figure 15).
Model T31739 (Mfd. Since 11/23)
Table Mounting
Arm
Figure 15. Table installed into table arm.
-17-
Page 20
5. Attempt to separate drill chuck and arbor by
hand —if they separate, repeat Steps 3–4.
9. Thread (1) table pivot lock handle into table
mounting arm cartridge (see Figure16) and
tighten until table is secure.
Table Pivot
Lock Handle
Table Mounting
Arm
Figure 16. Table secured with table pivot lock
handle.
Joining Drill Chuck
& Arbor
An arbor is included for the drill chuck that
comes with this machine. The following procedure
describes how to install the arbor in the chuck.
After the arbor is installed in the drill chuck, it
is very difficult to separate the assembly. If you
would like to use a different chuck in the future,
we recommend obtaining a new arbor.
IMPORTANT: DO NOT install the drill chuck
and arbor assembly into the spindle until AFTER
the test run.
10. Thread (3) downfeed handles into downfeed
hub, as shown in Figure 17.
Downfeed
Handle
Figure 17. Downfeed handles installed in hub.
11. Thread spindle speed lever into speed
adjustment hub (see Figure 18).
Speed Adjustment
Hub
Hub
To join drill chuck and arbor:
1. Use acetone or lacquer thinner to clean drill
chuck and arbor mating surfaces, especially
the bore.
2. Retract chuck jaws completely into chuck.
3. Insert small end of arbor into chuck.
4. Hold assembly by the arbor and tap chuck
onto a block of wood with medium force, as
illustrated below.
Spindle Speed
Lever
Figure 18. Spindle speed lever installed.
-18-
Figure 19. Tapping drill chuck/arbor on block of
wood.
Model T31739 (Mfd. Since 11/23)
Page 21
Test Run
Once assembly is complete, test run the machine
to ensure it is properly connected to power and
safety components are functioning correctly.
If you find an unusual problem during the test run,
immediately stop the machine, disconnect it from
power, and fix the problem BEFORE operating the
machine again. The
table in the
SERVICE section of this manual can help.
DO NOT start machine until all preceding
setup instructions have been performed.
Operating an improperly set up machine
ed results that can lead to serious injury,
Serious injury or death can result from
Troubleshooting
The Test Run consists of verifying the following:
1) The motor powers up and runs correctly, and
2) the emergency stop disabling mechanism
works correctly.
using this machine BEFORE understanding
its controls and related safety information.
DO NOT operate, or allow others to operate,
machine until the information is understood.
To test run machine:
1. Clear all setup tools away from machine.
2. Press Emergency Stop button in.
3. Connect machine to power by inserting power
cord plug into a matching receptacle.
Note: The speed digital readout will not
illuminate until Step 4 is completed.
Twist Emergency Stop button clockwise until
4.
it springs out (see Figure 20). This resets the
switch so the machine can start.
Figure 20. Resetting the switch.
Press green ON button (–) to turn machine
5.
ON. Verify motor starts up and runs smoothly
without any unusual problems or noises.
may result in malfunction or unexpect-
death, or machine/property damage.
Model T31739 (Mfd. Since 11/23)
Adjust spindle speed throughout full speed
6.
range (see Changing Spindle Speed on
Page 22).
Press Emergency Stop button to turn machine
7.
OFF.
WITHOUT resetting Emergency Stop button,
8.
try to start machine by pressing the ON button. The machine should not start.
— If the machine does not start, the safety
feature of the Emergency Stop button is
working correctly. Congratulations! The
Test Run is complete.
— If the machine does start, immediately
turn it OFF and disconnect power. The
safety feature of the Emergency Stop button is NOT working properly and must be
replaced before further using the machine.
-19-
Page 22
SECTION 4: OPERATIONS
The purpose of this overview is to provide the
novice machine operator with a basic understanding of how the machine is used during operation,
so the
discussed
later in this manual
Due to the generic nature of this overview, it isnot intended to be an instructional guide. To learn
more about specific operations, read this entire
manual,
training from experienced
machine operators, and do additional research
outside of this manual by reading "how-to" books,
trade magazines, or websites.
To reduce your risk of
serious injury, read this
entire manual BEFORE
Keep hair, clothing, and
ing parts at all times.
Entanglement can result
in death, amputation, or
using machine.
To reduce risk of eye or face injury from
flying chips, always wear approved safety
glasses and a face shield when operating
this machine.
Operation Overview
machine controls/components
are easier to understand.
seek additional
To complete a typical operation, the operator
does the following:
jewelry away from mov-
severe crushing injuries!
If you are not experienced with this type
of machine, WE STRONGLY RECOMMEND
that you seek additional training outside of
this manual. Read books/magazines or get
formal training before beginning any projects. Regardless of the content in this section, Grizzly Industrial will not be held liable
for accidents caused by lack of training.
1. Examines workpiece to make sure it is suit-
able for drilling.
Puts on required safety glasses and face
2.
shield.
Firmly secures workpiece to table using a
3.
vise or T-slot clamps.
Installs correct drill bit for operation.
4.
Adjusts table to correct height, then locks it in
5.
place.
Selects appropriate spindle speed according
6.
to drill bit speed chart located on Page21.
Connects machine to power, and turns
7.
machine ON.
Performs drilling operation.
8.
When finished, turns machine OFF and dis-
9.
connects it from power.
-20-
Model T31739 (Mfd. Since 11/23)
Page 23
Choosing Spindle Speeds
Using Drill Bit Speed Chart
The chart shown in Figure 21 is intended as a
generic guide only. Always follow the manufacturer's speed recommendations if provided with
your drill bits, cutters, or hole saws. Exceeding
the recommended speeds may be dangerous to
the operator.
The speeds shown here are intended to get you
started. The optimum speed will always depend
on various factors, including tool diameter, drilling
pressure, material hardness, material quality, and
desired finish.
Often, when drilling materials other than wood,
some type of lubrication is necessary.
Larger bits turning at slower speeds tend
to grab workpiece aggressively. This can
result in operator's hand being pulled into
bit or workpiece being thrown with great
force. Always clamp workpiece to table to
prevent reduce risk of injury.
............................................Soapy Water
The Model T31739 has a variable-speed spindle that operates between 400-2700 RPM. This
speed range is achieved using an adjustable pulley system that is controlled by moving the spindle
speed lever shown in Figure22.
The digital readout on the front of the headstock
displays the spindle RPM. Pull the spindle speed
lever forward to increase spindle speed. Push the
lever backward to decrease spindle speed.
Note: Spindle speed can only be adjusted when
the spindle is running.
Speed
Digital Readout
Chuck Arbor
Usually, once the chuck and arbor have been
properly mounted together, they are considered
semi-permanent connections. If you would like to
install a different chuck, we recommend getting a
new arbor for that chuck.
Installing Drill Chuck and Arbor
1. DISCONNECT MACHINE FROM POWER!
2. Rotate chuck on arbor until chuck jaws retract
into drill chuck body.
. Slide arbor into spindle socket while slowly
3
rotating chuck to line up tang on arbor with
slot in socket (see Figure 23).
Spindle Speed
Lever
Figure 22. Spindle speed lever and DRO.
Spindle Socket
Arbor Tang
Figure 23. Spindle, arbor, and chuck.
. Strike face of chuck from below with rubber-
4
faced mallet to seat arbor in spindle.
. Check seat by gently pulling down on chuck.
5
Scan this code to see a video of the above
process!
-22-
Model T31739 (Mfd. Since 11/23)
Page 25
Removing Drill Chuck Arbor
The arbor can be removed to install other Morse
Taper #2 tooling in the spindle. A drift key is
included to help remove the arbor or other tooling
from the spindle.
5. Rotate spindle until inner drift key slot is
aligned with outer slot (see Figure 26). You
will see through the spindle when the slot is
properly aligned.
Items Needed Qty
Metal Hammer ................................................... 1
Towel or Cloth
To remove drill chuck arbor:
1. DISCONNECT MACHINE FROM POWER!
2. Rotate downfeed handles until drift key slot is
exposed in side of quill (see Figure 24).
Drift Key
.................................... As Needed
Slot
Both Slots
Aligned
Figure 26.
6. Insert drift key into drift key slot, and allow
quill to rise, trapping drift key.
7. Tap drift key with a metal hammer (see
Figure 27) until chuck releases.
Inner and outer drift key slots aligned.
Figure 24. Drift key slot exposed.
3.
Adjust feed return stop nut shown in Figure
25 so it touches stop bracket. The quill should
not return up into the head casting when
depth stop is adjusted this way.
Return Stop
Nut
Figure 25. Feed return stop nut location.
Move table up until it is 1⁄4" below bottom of
4.
chuck, and place a towel or cloth under the
chuck.
Stop Bracket
Figure 27. Using drift key to remove arbor from
spindle.
8.
Hold downfeed handle with one hand, and
adjust feed return stop back to bottom of
depth stop with the other hand.
9.
Carefully retract the quill into the headstock.
Model T31739 (Mfd. Since 11/23)
-23-
Page 26
Installing/Removing
Adjusting Depth
Drill Bits
Any drill bit you install in the chuck must be
tight enough that it will not come loose during
operation. With a keyless chuck like the one that
comes on the T31739, no chuck key is necessary
for tightening or loosening.
Installing a Drill Bit
1. DISCONNECT MACHINE FROM POWER!
2. Turn drill chuck counterclockwise on arbor to
open jaws enough to accept shank of drill bit.
Insert drill bit as far as possible into chuck
3.
WITHOUT allowing chuck jaws to touch
fluted portion of bit, and hand-tighten chuck
clockwise as tightly as you can.
Note:Make sure small bits are not trapped
between edges of two jaws; if they are, reinstall drill bit or it will not be secure enough to
use for drilling.
Stop
The Model T31739 has a depth stop that allows
you to drill repeat non-through holes to the same
depth every time.
The depth stop consists of a stud attached to the
quill with a depth nut that can be lowered or raised
against a stop bracket to control drilling depth.
Figure 29 shows the various components of the
depth stop.
Depth
Stop Stud
Depth
Nut
Stop Bracket
Removing a Drill Bit
1. DISCONNECT MACHINE FROM POWER!
2. Turn chuck counterclockwise to open jaws
and catch drill bit with a rag to protect hands.
Using LED Worklight
Use light switch on front of headstock to turn on
LED worklight. Worklight can be repositioned as
necessary by pivoting it forward or backward.
Figure 29. Depth stop components.
To adjust depth stop:
Lower drill bit to required height.
1.
2. Thread depth nut down against stop bracket.
Note: The scale on the depth stop can be
recalibrated if it gets moved or has changed
from factory setting. Refer to Calibrating Depth Stop on Page 32 for instructions on
how this is done.
Worklight
Figure 28. Location of LED worklight.
-24-
Model T31739 (Mfd. Since 11/23)
Page 27
Positioning Table
Tilting Table
1. Loosen the lock bolt and set screw shown in
Figure 31.
The table moves vertically, rotates 360°, pivots
around the column, and tilts 45° left or right. The
support can also be extended to accommodate
long workpieces.
Rotating Table
Loosen pivot lock handle shown in Figure 30.
1.
2. Rotate table to desired position, then re-
tighten pivot lock handle.
Raising/Lowering Table
1
. Loosen table height lock handle shown in
Figure 30.
. Adjust table height by rotating table height
2
crank handle (see Figure 30), then re-tighten
table height lock handle.
Pivoting Table Around Column
. Loosen table height lock handle (see
1
Figure 30).
. Pivot table to desired location, making sure
2
guide rack moves around column with table,
as shown in Figure 30.
2. Tilt table until pointer aligns with desired
angle on scale (see Figure 31).
Tilt Angle
Pointer and Scale
Lock Bolt
Set Screw
Figure 31. Table tilt controls.
. Retighten set screw and lock bolt to secure
3
table position.
Adjusting Support Arm Extension
1. Loosen support arm extension locks (see
Figure 32).
. Retighten table height lock handle.
3
Rack
Table Height
Lock Handle
Pivot Lock
Handle
Figure 30. Table adjustment controls.
Table Height
Crank Handle
Support Arm
Extension Locks
Figure 32. Support arm extension locks.
2. Adjust support arm to desired length.
Tighten support arm extension locks.
3.
Model T31739 (Mfd. Since 11/23)
-25-
Page 28
Adjusting Laser
The crosshair lasers should be checked and
adjusted for accuracy before starting a new
project, raising or lowering the table, or changing
workpiece thickness.
7. Loosen (2) Phillips head screws securing
each laser seat then adjust lasers by hand
(Figure 34), positioning them so crosshairs
align with indentation you made earlier in
surface of workpiece (see Figure 35).
— Turning each laser will adjust each cross-
hair line angle.
If a laser burns out, refer to Replacing Lasers &
Worklight on Page 33 to replace.
DO NOT look directly into laser. Severe eye
injury will result.
Items Needed Qty
Phillips Head Screwdriver #1 ............................ 1
To adjust lasers:
1.
DISCONNECT MACHINE FROM POWER!
2. Install drill bit in chuck (see Installing/
Removing Drill Bits on Page 24).
Clamp workpiece to table.
3.
Adjust table so workpiece is just below drill
4.
bit, then lock table in position.
— Adjusting laser position in seat will adjust
crosshair line positions.
x 2
Laser
Figure 34. Laser adjustment components.
Indentation
Lower drill bit so it touches workpiece, mak-
5.
ing a slight indentation in the surface, then
raise bit.
. Connect drill press to power. Turn laser
6
ON using switch on front of drill press (see
Figure 33).
Laser ON/
OFF Switch
Figure 33. Location of laser ON/OFF switch.
-26-
Figure 35. Crosshairs aligned with indentation
on workpiece.
. Once crosshairs are aligned with indenta-
8
tion in workpiece, tighten screws loosened in
Step 7 to secure laser positions.
Model T31739 (Mfd. Since 11/23)
Page 29
ACCESSORIES
Installing unapproved accessories may
order online atwww.grizzly.comor call1-800-523-4777
SECTION 5: ACCESSORIES
cause machine to malfunction, resulting in
serious personal injury or machine damage.
To reduce this risk, only install accessories
recommended for this machine by Grizzly.
NOTICE
Refer to our website or latest catalog for
additional recommended accessories.
T33682—Drill Press Tray
This tray keeps all your drill press accessories
ready to go at your fingertips, making projects
more efficient and enjoyable. It will hold a 29-piece
drill bit set in the embossed holes and has room
for other accessories. Easy to install and use with
mount clamps to attach to your drill press column.
T32710—Drill Press Table w/Flip-Stop Fence
This table will increase your usable workspace.
The 26" long fence features a T-slot with two
adjustable flip stops and an easy-to-read scale
with imperial measurements. Fence slides in
3
⁄4" x 153⁄4" table embedded T-slots.
23
Figure 37. T32710 Drill Press Table w/Flip-Stop
Fence.
T30015—HSS M35 Cobalt 115-Pc. Drill Bit Set
The bits in this 115-piece set all have 135˚ split
points and fully ground flutes. Fractional sizes
1
⁄16"–1⁄2 " in increments of 1⁄64", letter bits from A–Z,
and 60 number bits.
Figure 36. T33682 Drill Press Tray.
Figure 38. T30015 115-Pc. HSS M35 Cobalt
Drill Bit Set.
Model T31739 (Mfd. Since 11/23)
-27-
Page 30
SECTION 6: MAINTENANCE
accidental startup, always
disconnect machine from
To reduce risk of shock or
power before adjustments,
maintenance, or service.
Schedule
For optimum performance from this machine, this
maintenance schedule must be strictly followed.
Ongoing
To minimize your risk of injury and maintain proper
machine operation, shut down the machine immediately if you ever observe any of the items below,
and fix the problem before continuing operations:
G5562—SLIPIT® 1 Qt. Gel
G5563—SLIPIT® 11 Oz. Spray
Figure 39. Recommended products for
protecting unpainted cast-iron and steel.
Lubrication
• Loose mounting bolts.
• Worn switches.
Worn or damaged wires.
•
• Damaged V-belt.
• Any other unsafe condition.
Monthly Check
• V-belt tension, damage, or wear (Page 32).
• Clean/vacuum dust buildup off motor.
Cleaning &
Protecting
Cleaning the Model T31739 is relatively easy.
Vacuum excess wood chips and sawdust, and
wipe off the remaining dust with a dry cloth. If any
resin has built up, use a resin dissolving cleaner
to remove it.
An essential part of lubrication is cleaning the
components before lubricating them.
This step is critical because grime and chips build
up on lubricated components, which makes them
hard to move. Simply adding more lubricant will
not result in smooth moving parts.
Clean components in this section before lubricating with recommended products like those shown
in Figure 40.
DISCONNECT MACHINE FROM POWER
BEFORE PERFORMING LUBRICATION.
T23962—ISO 68 Moly-D Way Oil, 5 Gal.
T26419—Syn-O-Gen Synthetic Grease
T23962
Protect the unpainted cast-iron table by wiping
it clean after every use—this ensures moisture
from wood dust does not remain on bare metal
surfaces. Keep the table rust-free with regular
applications of products like those in Figure 39.
-28-
T26419
Figure 40. Recommended lubrication products.
Model T31739 (Mfd. Since 11/23)
Page 31
Quill & Column Surfaces
Oil Typ e .....Grizzly T23962 or ISO 68 Equivalent
Oil Amount
Lubrication Frequency
Move the spindle all the way down to access the
smooth surfaces of the quill. Adjust table height
as necessary to access entire length of column
(see Figures 41– 42). Clean both with mineral
spirits and shop rags.
Note: Avoid removing the grease from the column
and quill racks during cleaning.
Clean the column rack teeth in a similar manner
with mineral spirits, shop rags, and a brush.
Quill Rack
Column Rack
Figure 43. Quill and column rack locations.
After cleaning, allow mineral spirits to dry, then
use a brush to apply a thin coat of grease to the
rack teeth, then fully raise/lower quill and table to
distribute grease.
Note: Apply oil to the quill smooth outside surface
that was removed during the cleaning process.
Figure 41. Quill surface.
Column
Surfaces
Figure 42. Column surface locations.
After cleaning, allow mineral spirits to dry, then
apply a thin coat of oil to the surfaces.
Column Rack, Quill Rack & Pinion
Grease Type ..... Grizzly T26419 or NLGI#2 Equiv
Grease Amount
Lubrication Frequency
....................................Thin Coat
......... 90 hrs. of Operation
Support Arm Extension Rods
Oil Typ e .....Grizzly T23962 or ISO 68 Equivalent
Oil Amount
Lubrication Frequency
Clean support arm extension rods (see Figure
44) with mineral spirits and a shop rag.
After cleaning, allow mineral spirits to dry, then
apply a thin coat of oil to the rods. Move support
arm in and out to distribute lubricant.
Move spindle all the way down to gain full access
to quill rack (see Figure 43), then clean teeth with
mineral spirits, shop rags, and a brush.
Model T31739 (Mfd. Since 11/23)
-29-
Page 32
Review the troubleshooting procedures in this section if a problem develops with your machine. If you need
replacement parts or additional help with a procedure, call our Technical Support.
the
serial number and manufacture date of your machine before calling.
SECTION 7: SERVICE
Troubleshooting
Motor & Electrical
SymptomPossible CausePossible Solution
Machine does not
start, or power
supply fuse/breaker
trips immediately
after startup.
Machine stalls or is
underpowered.
Machine has
vibration or noisy
operation.
1. E-Stop Button depressed/at fault.
2. Incorrect power supply voltage or circuit
size.
3. Power supply circuit breaker tripped or fuse
blown.
4. Start capacitor at fault.
5. Wiring broken, disconnected, or corroded.
6. ON/OFF buttons at fault.
7. Motor at fault.
1. Incorrect bit/cutter for task.
2. Feed rate/cutting speed too fast.
3. Dull bit/cutter.
4. Belt slipping.
5. Machine undersized for task.
6. Motor overheated.
7. Pulley slipping on shaft.
8. Motor at fault.
1. Motor or component loose.
2. V-belt worn.
3. Incorrectly mounted to workbench.
4. Motor mount loose/broken.
5. Spindle loose, improperly installed or
damaged.
6. Workpiece loose.
7. Motor fan rubbing on fan cover.
8. Spindle bearings at fault.
9. Chuck or cutter at fault.
10. Motor bearings at fault.
1. Rotate E-Stop Button head to reset. Replace if at
fault.
2. Ensure correct power supply voltage and circuit
size (Page 10).
3. Ensure circuit is sized correctly and free of shorts.
Reset circuit breaker or replace fuse.
4. Test/replace if at fault.
5. Fix broken wires or disconnected/corroded
connections (Page 36).
6. Replace.
7. Test/repair/replace.
1. Use correct bit/cutter for task.
2. Decrease feed rate/cutting speed (Page 22).
3. Sharpen bit/cutter or replace.
4. Ensure belt is oil free, tension/replace belt
(Page 32).
5. Use correct cutter/bit; reduce feed rate; reduce
2. Install tool/bit correctly or replace (Page 25).
3. Replace spindle bearings.
1. Install scrap board between table and workpiece.
1. Adjust position/replace if at fault.
2. Fix broken wires or disconnected/corroded wiring
connections (Page 36).
1. Clean lens.
2. Check for proper connections or replace (Page 36).
3. Replace switch.
4. Replace laser/LED (Page 33).
5. Replace circuit board.
Model T31739 (Mfd. Since 11/23)
-31-
Page 34
V-Belt Tension &
Replacement
The V-belt transfers power from the motor to the
spindle. If the V-belt does not have the proper
tension or is damaged or contaminated with oil/
grease, the drill press will not operate with full
power. Regularly check V-belt tension and replace
the belt when necessary. Figure 45 shows the
V-belt tension components.
Fixed Pulley
V-Belt
3.
Open belt cover.
4. Remove old belt and install a new one.
5. Close belt cover and connect machine to
power.
To re-tension belt, turn spindle rotation ON,
6.
and adjust spindle speed lever to lowest
speed setting.
Note:Belt tension cannot be reapplied with-
out spindle turning.
Calibrating
Depth Stop
The depth stop allows you to drill multiple holes at
the same depth. The scale on this depth stop can
be calibrated if it ever becomes incorrect.
Speed Pulley
Figure 45. V-belt tension components.
To replace V-belt:
DISCONNECT MACHINE FROM POWER!
1.
2. Adjust spindle speed lever fully for-
ward to highest speed setting (see
Figure 46) to release belt tension.
Spindle Speed
Lever
Figure 46. Spindle speed lever location.
To calibrate depth stop:
Loosen return stop nut and calibration nut
1.
shown in Figure 47.
Return Stop
Nut
Calibration
Nut
Figure 47. Calibration components.
2. Use calibration nut to zero depth stop scale
with depth stop bracket.
Hold depth stop at zero, and tighten return
3.
stop nut to hold depth stop in position.
Test depth stop by measuring how far spindle
4.
moves with respect to where you set depth
stop.
Depth Stop
Bracket
-32-
Model T31739 (Mfd. Since 11/23)
Page 35
Replacing Lasers &
1
2
NC
Ground
DRO
Circuit
Board
E-StopButton
Ground
CONTROL PANEL
DKLD
CB07 6A
ON/OFF
Switch
LAY5-
BE102
1
2
3
4
Neutral
Hot
Ground
120 VAC
5-15 Plug
120V MOTOR
MOTOR
JUNCTION BOX
Run
Capacitor
25uF
450VAC
1W 3.5V
LED LIGHT
+
+
+
-
-
-
Circuit
Board
DKLD
CB07-5C
SPEED SENSOR
LED Worklight
If either one of the lasers or the LED bulb in the
worklight burn out and need to be replaced, they
must be rewired. A wiring diagram is provided on
Page 36 for your reference.
Items Needed Qty
Phillips Head Screwdriver #1, #2 .................1 Ea.
New Laser & Cord (#PT31739067)
Replacing Laser
1.
DISCONNECT MACHINE FROM POWER!
2. Remove (2) Phillips head screws securing
burned out laser in laser seat (see Figure 48).
................... 1
4. Remove control panel cover. Find where
laser cord wires connect to laser switch and
crimp wire connector (see Figure 50).
DKLD DZ04
21
Crimp
Wire Connector
Laser Cord
LASERS
DKLD 1801
LASER
SWITCH
GORBO
XCK-017
Laser Switch
21
LIGHT
SWITCH
GORBO
XCK-017
(1 of 2)
Figure 50. Laser wiring.
. Remove burned out laser wires from their
5
their connections on laser switch and in crimp
wire connector, then remove laser from headstock, pulling wires with it.
x 2
Figure 48. Location of Phillips head screws
securing laser.
3.
Open belt cover and identify which cord is
connected to laser by lightly tugging cords
fed into headstock (see Figure 49).
. Insert new laser wires up through hole in
6
headstock, through belt cover, and attach
wires to laser switch and crimp wire connector as they were connected in Step 4.
7. Replace control panel cover and close belt
cover.
. Refer to Adjusting Laser on Page 26 to
8
secure and adjust laser.
Figure 49. Worklight and laser cords fed into
headstock.
Model T31739 (Mfd. Since 11/23)
-33-
Page 36
Replacing Worklight
1
2
NC
DRO
CircuitBoard
E-StopButton
CONTROL PANEL
DKLD
CB07 6A
LAY5-
BE102
Neutral
Hot
Ground
120 VAC
5-15 Plug
Circuit
Board
DKLD
CB07-5C
SPEED SENSOR
Items Needed Qty
Phillips Head Screwdriver #2 ......................1 Ea.
New Worklight & Cord (#PT31739066)
To replace worklight:
DISCONNECT MACHINE FROM POWER!
1.
2. Grip and pull worklight down through head-
stock hole to reveal spring clamps (see
Figure 51). Quarter-turn the worklight to
release clamps and worklight.
............. 1
3. Open belt cover and identify which cord is
connected to worklight by lightly tugging
cords fed into headstock (see Figure 52).
Figure 52. Cords fed into headstock.
4. Remove control panel cover. Find where work-
light cord wires connect to worklight switch
and crimp wire connector (see Figure 53).
Spring Clamps
Figure 51. Worklight position and clamps.
Worklight
3
1
21
Worklight
LASER
SWITCH
Switch
GORBO
XCK-017
4
ON/OFF
Switch
2
DKLD DZ04
21
LIGHT
SWITCH
GORBO
XCK-017
LED LIGHT
Worklight
Cord
+
-
+
-
+
-
1W 3.5V
Crimp
Wire Connector
Figure 53. Worklight wiring.
. Replace old worklight wires with new work-
5
light wires, and feed new worklight back
through headstock and worklight hole.
6. Replace control panel cover and close belt
cover.
. Use spring clamps to secure worklight in
7
position.
-34-
Model T31739 (Mfd. Since 11/23)
Page 37
Adjusting
Spring Tension
The spring tension for automatic quill recoil has
been pre-set at the factory. In most cases, it will
never need to be re-adjusted during life of the
machine. However, if quill stops automatically
recoiling, the spring may need to be adjusted for
additional tension. If it does need adjustment, the
spring housing is located on the left side of the
headstock.
If the return spring should
come loose from the spring
cap and rapidly unwind,
laceration or impact injuries could occur. Always
wear heavy leather gloves
and safety glasses when
adjusting the return spring
tension.
5. Wearing gloves, pull spring cover (see Figure
55) outward just enough to disengage spring-
cover lock slot from locking lug.
6. Rotate cover counterclockwise to increase
tension, or let cover slowly unwind in clockwise direction to reduce spring tension (see
Figure 54).
Reduce Spring Tension
Increase Spring Tension
Figure 54. Example of adjusting cover.
7. Engage next available spring-cover lock slot
with locking lug (see Figure 55) and hold
spring lock cover tightly to side of headstock.
Items Needed Qty
Heavy Leather Gloves ................................1 Pair
Safety Glasses
Shop Rags
Open-End Wrench 19mm
To adjust spring tension:
1. DISCONNECT MACHINE FROM POWER!
PUT ON SAFETY GLASSES!
2.
Wipe any oil off spring lock cover so it does not
3.
slip in your fingers when you hold the cover
from spinning (see Figure 55).
4. Hold spring lock cover against side
of headstock so the cover stays splined
with locking lug, as shown in Figure 55,
then loosen jam nut and loosen cover nut
approximately
IMPORTANT: Hold spring cover tightly during
Step 5, or force of spring will cause cover to
spin out of your hands.
...........................................1 Pair
......................................... As Needed
.................................. 1
1
⁄4" each.
Spring Lock
Cover
Jam Nut and
Cover Nut
Figure 55. Spindle return spring assembly.
8. Tighten cover nut against spring cover
just until nut stops, and then back off nut
approximately
9. Hold cover nut and tighten jam nut to cover
nut.
Check return spring tensioning by downfeed-
10.
ing spindle. Spindle should return quickly
when downward pressure is released.
— If spindle does not retract quickly, repeat
Steps 4–9, and re-check tension until
return speed is adequate.
1
⁄3 turn.
Spring Cover
Locking Lug
Spring Cover
Lock Slots
Model T31739 (Mfd. Since 11/23)
-35-
Page 38
These pages are current at the time of printing. However, in the spirit of improvement, we may make changes to the electrical systems of future machines. Compare the manufacture date of your machine to the one
stated in this manual, and study this section carefully.
If there are differences between your machine and what is shown in this section, call Technical Support at
(570) 546-9663 for assistance BEFORE making any changes to the wiring on your machine. An updated
wiring diagram may be available.
number and manufacture date of your
machine before calling. This information can be found on the main machine label.
SECTION 8: WIRING
Note: Please gather the serial
Wiring Safety Instructions
SHOCK HAZARD. Working on wiring that is con-
nected to a power source is extremely dangerous.
Touching electrified parts will result in personal
injury including but not limited to severe burns,
electrocution, or death. Disconnect the power
from the machine before servicing electrical components!
MODIFICATIONS. Modifying the wiring beyond
what is shown in the diagram may lead to unpredictable results, including serious injury or fire.
This includes the installation of unapproved aftermarket parts.
WIRE CONNECTIONS. All connections must
be tight to prevent wires from loosening during
machine operation. Double-check all wires disconnected or connected during any wiring task to
ensure tight connections.
CIRCUIT REQUIREMENTS. You MUST follow
the requirements at the beginning of this manual
when connecting your machine to a power source.
WIRE/COMPONENT DAMAGE. Damaged wires
or components increase the risk of serious personal injury, fire, or machine damage. If you notice
that any wires or components are damaged while
performing a wiring task, replace those wires or
components.
MOTOR WIRING. The motor wiring shown in
these diagrams is current at the time of printing
but may not match your machine. If you find this
to be the case, use the wiring diagram inside the
motor junction box.
CAPACITORS/INVERTERS. Some capacitors
and power inverters store an electrical charge for
up to 10 minutes after being disconnected from
the power source. To reduce the risk of being
shocked, wait at least this long before working on
capacitors.
EXPERIENCING DIFFICULTIES. If you are experiencing difficulties understanding the information
included in this section, contact our Technical
Support at (570) 546-9663.
The photos and diagrams
included in this section are
best viewed in color. You
can view these pages in
color at www.grizzly.com.
-36-
Model T31739 (Mfd. Since 11/23)
Page 39
Ground
Ground
120V MOTOR
MOTOR
JUNCTION BOX
Wiring Diagram
Neutral
Run
Capacitor
25uF
250VAC
Hot
Ground
SPEED SENSOR
CONTROL PANEL
E-Stop
Button
3
1
21
DRO
Circuit
Board
NC
2
4
ON/OFF
Switch
2
DKLD DZ04
1
LAY5BE102
DKLD
CB07 6A
21
120 VAC
5-15 Plug
DKLD
CB07-5C
-
LED LIGHT
1W 3.5V
Circuit
Board
+
-
-
Figure 56. Motor junction box wiring.
Figure 57. Control panel wiring.
+
+
LASER
SWITCH
GORBO
XCK-017
LASERS
DKLD 1801
Model T31739 (Mfd. Since 11/23)
LIGHT
SWITCH
GORBO
XCK-017
Figure 58. Speed sensor.
READ ELECTRICAL SAFETY
ON PAGE 36!
-37-
Page 40
SECTION 9: PARTS
We do our best to stock replacement parts when possible, but we cannot guarantee that all parts shown
are available for purchase. Call (800) 523-4777 or visit www.grizzly.com/parts to check for availability.
Main
117
107
21
22
20
106
99
104
103
102
101
42
40
41
19
118
39
38
25
24
23
18
56
57
45
43
49
105
50
44
28
109
17
51
58
48
46
29
52
59
26
53
47
30
27
31
98
97
96
60
37
54
31
55
3
2
1
0
16
67
34-1
32
33
34
35
93
36
14
95
94
93
92
68
72
85
91
65
64
63
62
90
87
73
66
89
61
119
8
88
63
69
110
70
77
74
15
83
78
82
75
81
71
76
12
13
86
11
5
4
3
2
9
7
10
84
80
75
7
79
78-1
78-4
8
78-6
108
78-2
6
113
78-3
78-5
78-7
116
114
115
1
-38-
BUY PARTS ONLI NE AT GRIZZLY.COM!
Scan QR code to visit our Par ts Store.
Model T31739 (Mfd. Since 11/23)
Page 41
REF P ART #DES CRIP TIONREF PART #DES CRIP TION
Main Parts List
1PT31739001BASE58PT31739058HEX NUT M12-1.75
2PT31739002COLUMN SEAT59PT31739059RETURN SP RI NG COV ER
3PT31739003HEX BOLT M8-1.25 X 2060PT31739060FLAT COIL SPRING
4PT31739004COLUMN61PT31739061HEADS TOCK
5PT31739005RACK62PT31739062CAP SCREW M8-1.25 X 12
6PT31739006REVOLVING HANDLE 20 X 75, M10-1.5 X 1063PT31739063FLAT WA SHER 8MM
7PT31739007SET SCREW M6-1 X 1064PT31739064COMPRESSION SPRING 2 X 22 X 80
8PT31739008LOCK HANDLE 15 X 78, M10-1.5 X 2565PT31739065SPEED SHAFT
9PT31739009WORM SHAFT66PT31739066LED BULB 1W 3.5V
10PT31739010WORM GEAR PIN67PT31739067LASER DKLD 1801
11PT31739011WORM GEAR68PT31739068LASER COVER
12PT31739012WORM GEA R HOUS I NG69PT31739069PINION GEAR
13PT31739013COLUMN RI NG70PT31739070DOWNFEED LEVER HUB M10-1.5
14PT31739014HEX BOLT M12-1.75 X 2571PT31739071KNOB BOLT M10-1.5 X 10, D40, ROUND
15PT31739015TABLE MOUNTI NG ARM72PT31739072LASER SEAT
16PT31739016TABLE73PT31739073SET SCREW M6-1 X 10
17PT31739017EXTENSION ROD 1/2" X 8-3/4"74PT31739074HEX BOLT M10-1.5 X 40
18PT31739018KNOB BOLT M8-1.25 X 18, D36, WING75PT31739075FLAT WASHER 10MM
19PT31739019EXTENSION ROLLER BRACKET76PT31739076MOTOR MO UNT PLATE
20PT31739020EXTENSION ROLLER77PT31739077HEX BOLT M8-1.25 X 16
21PT31739021FLAT HD CAP SCR M6-1 X 1278PT31739078MOTOR 1/3HP 120V 1-PH
22PT31739022CAP SCREW M10-1.5 X 2078-1 PT31739078-1 MOTOR FA N COV ER
23PT31739023DRILL CHUCK JT3 X 1/32"-5/8" KEYLESS78-2 PT31739078-2 MOTOR FA N
24PT31739024DRILL CHUCK A RBOR 5/ 8"78-3 PT31739078-3 CAPACITOR COVER
25PT31739025SPINDLE78-4 PT31739078-4
26PT31739026BALL BEARING 6204ZZ78-5 PT31739078-5 MOTOR J UNCTI ON BOX
27PT31739027QUILL78-6 PT31739078-6 BALL BEARING 6203ZZ
28PT31739028BALL BEARING 6201ZZ78-7 PT31739078-7 MOTOR CORD 3G 3W 39"
29PT31739029CLAMP BOLT M12-1.75 X 279PT31739079HEX NUT M1 0-1. 5
30PT31739030COMPRESSION SPRING 1.2 X 680PT31739080KEY 4 X 4 X 80 SE
31PT31739031LOCK NUT M8-1.2581PT31739081MOTOR SPRING SEAT
32PT31739032QUICK-RELEASE DEPTH STOP82PT31739082COMPRESSION SPRING 2 X 33 X 78
33PT31739033DEPTH STO P S UPPORT NUT83PT31739083MOTOR PULLEY SET
34PT31739034THREADED DE PTH RO D84PT31739084SET SCREW M6-1 X 10
34-1 PT31739034-1 DEPTH STOP GAUGE85PT31739085PHLP HD SCR M4-.7 X 16
35PT31739035HEX NUT M6- 186PT31739086EXT RE TAINI NG RING 1 6MM
36PT31739036DEPTH STOP BRACKET87PT31739087SPEED SENSOR MOUNT
37PT31739037CAP SCREW M6-1 X 2588PT31739088FLA T WAS HER 5MM
38PT31739038PHLP HD SCR M5-.8 X 1689PT31739089PHLP HD SCR M5-.8 X 20
39PT31739039ROCKER SWITCH GORBO XCK-017 10(4)A 250V90PT31739090SPEED SENSOR DKLD CB07-5C
40PT31739040MAG ON/OFF SWITCH DKLD DZ04 10A 120V91PT31739091TAP SCREW M2.9 X 6
41PT31739041E-STOP BUTTON LAY5-BE102 10(6)A 400V92PT31739092EXT RE TAINI NG RING 1 7MM
42PT31739042DISPLAY SCREEN COVER93PT31739093BALL BEARING 6203ZZ
43PT31739043SWI TCH B OX94PT31739094BUSHING 39 X 27 X 10
44PT31739044TAP SCREW M3 X 895PT31739095SPINDLE PULLEY SHAFT
45PT31739045DIGITAL DISPLAY DKLD CB07-6A96PT31739096KEY 4 X 4 X 65 SE
46PT31739046CHUCK KEY HOLDER97PT31739097EXT RE TAINI NG RING 2 4MM
47PT31739047DEPTH STOP BRACKET98PT31739098BELT GUARD
48PT31739048PHLP HD SCR M5-.8 X 1299PT31739099SPINDLE PULLEY SET
49PT31739049LOCK NUT M10-1.5101PT31739101E XT RETAI NI NG RING 3 5MM
50PT31739050FLAT WASHER 10MM102PT31739102INT RE TAINI NG RING 5 0MM
51PT31739051SPEED HANDLE HUB103PT31739103BALL BEARING 61907-ZZ
52PT31739052FL AT HD SCR M5-. 8 X 16104PT31739104SPEED SEAT
53PT31739053SPEED ADJUST PLATE105PT31739105SET SCREW M10-1.5 X 20
54PT31739054KEY 4 X 4 X 12 SE106PT31739106POLY V-BELT AX35
55PT31739055SPEED CONTROL GEAR107PT31739107POWER CORD 18G 3W 39.5" 5-15P
56PT31739056SPEED CONTROL KNOB SHAFT108PT31739108LEVER
57PT31739057KNOB M8-1.25, D32, BALL
R CAPACITOR 25M 250V 3-1/2 x 1-5/8
Model T31739 (Mfd. Since 11/23)
BUY PARTS ONLI NE AT GRIZZLY.COM!
Scan QR code to visit our Par ts Store.
-39-
Page 42
Main Parts List (Cont.)
REF PART #DESCRIPTIONREF PART #DESCRIPTION
110PT31739110SPEED SENSOR CORD 24G 3W 10"116PT31739116DRIFT KEY
113PT31739113HEX WRENCH 3MM117PT31739117FLANGE SCREW M6-1 X 12
114PT31739114HEX WRENCH 4MM118PT31739118EXT RETAINING RING 12MM
115PT31739115HEX WRENCH 5MM119PT31739119SET SCREW M8-1.25 X 12
Labels & Cosmetics
NOTICE
Only change speed while
spindle is turning.
204
201
–
203
Specifications
Motor: 1/3 HP, 120V, 4.3A, 1-Ph, 60 Hz
Max Distance Spindle to Column: 6"
Max Distance Spindle to Table: 13-1/4"
Max Distance Spindle to Base: 20-1/4"
Spindle Speed Range: 300-3000 RPM
Drilling Capacity Mild Steel: 5/8"
Spindle Travel: 3-1/2"
Spindle Taper: MT#2
Weight: 93 lbs.
Mfd. for Grizzly in Taiwan
+
Date
S/N
WARNING!
INJURY/SHOCK
HAZARD!
Disconnect power
before adjustments,
maintenance, or
service.
WARNING!
To reduce risk of death
or serious injury, read
manual BEFORE using
machine.
To get a new manual, call
(800) 523-4777 or go to
www.grizzly.com.
206
MODEL T31739
12" VARIABLE-SPEED BENCHTOP
DRILL PRESS WITH LASER
WARNING!
To reduce the risk of serious injury when using this machine:
1. Read and understand owner’s manual before operating.
2. Always wear approved safety glasses.
3. Only plug power cord into a grounded outlet.
4. Disconnect power before setting up or servicing.
5. Tie back long hair, roll up long sleeves, and DO NOT wear loose
clothing, gloves, or jewelry.
6. Keep all guards and covers in place during operation.
7. Clamp workpiece to table to prevent rotation.
8. Avoid putting hands where they could slip into rotating bits.
9. Always remove chuck keys and other tools before starting.
10. Use correct speeds for drilling accessories and workpiece.
11. Do not expose to rain or use in wet locations.
12. Prevent unauthorized use by children or untrained users.
WARNING!
PINCH
HAZARD!
Always keep this
cover closed
during operation.
205V2
DO NOT look directly into the laser.
Serious eye damage will occur.
207
WARNING!
ENTANGLEMENT
HAZARD!
Tie back long hair, roll up
long sleeves, and remove
loose clothing, jewelry, or
gloves to prevent getting
caught in moving parts.
WARNING!
EYE/FACE INJURY
HAZARD!
Always wear
ANSI-approved safety
glasses and face
shield when using
this machine.
209
202
210
208
REF P ART #DES CRIP TI ONREF PART #DE SCRIP TION
201PT31739201SHOCK/PINCH HAZARD LABEL206PT31739206MACHINE ID LABEL
202PT31739202MANUAL/ENTANGLEMENT/EYE-FACE LABEL207PT31739207LASER LABEL
203PT31739203SPEED ADJUSTMENT LABEL208PT31739208ELECTRICITY LABEL
204PT31739204SPEED NOTICE LABEL209PT31739209TOUCH-UP PAINT GRIZZLY GREEN
205V2 PT31739205V2 GRIZZLY NAMEPLATE-MINI V2.11.23210PT31739210TOUCH-UP PAINT GRIZZLY BLACK
Safety labels help reduce the risk of serious injury caused by machine hazards. If any label comes
off or becomes unreadable, the owner of this machine MUST replace it in the original location
before resuming operations. For replacements, contact (800) 523-4777 or www.grizzly.com.
-40-
BUY PARTS ONLI NE AT GRIZZLY.COM!
Scan QR code to visit our Par ts Store.
Model T31739 (Mfd. Since 11/23)
Page 43
WARRANTY & RETURNS
Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from
the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,
negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty
and any and all warranties that may be implied by law, including any merchantability or fitness, for any particular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent
that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.
In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and
any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.
We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,
or consequential damages arising from the use of our products.
The manufacturers reserve the right to change specifications at any time because they constantly strive to
achieve better quality equipment. We make every effort to ensure that our products meet high quality and
durability standards and we hope you never need to use this warranty.
In the event you need to use this warranty, contact us by mail or phone and give us all the details. We will
then issue you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of
the carton. We will not accept any item back without this number. Proof of purchase must accompany the
merchandise.
Please feel free to write or call us if you have any questions about the machine or the manual.
Thank you again for your business and continued support. We hope to serve you again soon.
To
you can
applicable information for
take advantage of this warranty, you must register it at https://www.grizzly.com/forms/warranty, or
scan the QR code below to be automatically directed to our warranty registration page. Enter all
the product.
WARRANTY
Page 44
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