Grizzly G9986 User manual
MODEL G9986
8" DRILL PRESS
INSTRUCTION MANUAL
COPYRIGHT © APRIL, 2006 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#TR8194 PRINTED IN CHINA
Table of Contents
INTRODUCTION ............................................................................................................................... 2
Foreword .................................................................................................................................... 2
Contact Info ................................................................................................................................ 2
Machine Data Sheet ................................................................................................................... 3
Identification ............................................................................................................................... 4
SECTION 1: SAFETY ....................................................................................................................... 5
Safety Instructions for Machinery ............................................................................................... 5
Safety for Drill Presses .............................................................................................................. 7
SECTION 2: CIRCUIT REQUIREMENTS ........................................................................................ 8
110V Operation .......................................................................................................................... 8
SECTION 3: SET UP ........................................................................................................................ 9
Items Needed for Set Up ........................................................................................................... 9
Unpacking .................................................................................................................................. 9
Inventory ..................................................................................................................................... 9
Clean Up .................................................................................................................................. 10
Assembly .................................................................................................................................. 10
Test Run ................................................................................................................................... 12
Mounting ................................................................................................................................... 12
SECTION 4: OPERATIONS ........................................................................................................... 13
Installing/Removing Drill Bits .................................................................................................... 13
Adjusting Table ........................................................................................................................ 13
Changing Speeds ..................................................................................................................... 14
Depth Stop ............................................................................................................................... 14
Drilling ...................................................................................................................................... 15
Choosing Speeds ..................................................................................................................... 16
SECTION 5: ACCESSORIES ......................................................................................................... 17
SECTION 6: MAINTENANCE ........................................................................................................ 18
General ..................................................................................................................................... 18
Cleaning ................................................................................................................................... 18
Lubrication ................................................................................................................................ 18
V-Belt ........................................................................................................................................ 18
SECTION 7: SERVICE ................................................................................................................... 19
About Service ........................................................................................................................... 19
Troubleshooting ........................................................................................................................ 19
Lash Adjustment ...................................................................................................................... 21
Feed Shaft Spring Tension ...................................................................................................... 21
Electrical Components ............................................................................................................. 23
Wiring Diagram ........................................................................................................................ 23
G9986 Parts Breakdown .......................................................................................................... 24
G9986 Parts List ...................................................................................................................... 25
WARRANTY AND RETURNS ........................................................................................................ 26
-2- Model G9986 8" Drill Press
If you have any comments regarding this manual,
please write to us at the address below:
Grizzly Industrial, Inc.
C/O Technical Documentation Manager
P.O. Box 2069
Bellingham, WA 98227-2069
We stand behind our machines. If you have any
service questions or parts requests, please call or
write us at the location listed below.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail: [email protected]
Web Site: http://www.grizzly.com
Foreword
INTRODUCTION
Contact Info
We are proud to offer the Model G9986 8" Drill
Press. This machine is part of a growing Grizzly
family of fine woodworking and metalworking
machinery. When used according to the guide-
lines set forth in this manual, you can expect
years of trouble-free, enjoyable operation and
proof of Grizzly’s commitment to customer satis-
faction.
We are pleased to provide this manual with
the Model G9986. It was written to guide you
through assembly, review safety considerations,
and cover general operating procedures. It repre-
sents our effort to produce the best documenta-
tion possible.
The specifications, drawings, and photographs
illustrated in this manual represent the Model
G9986 as supplied when the manual was pre-
pared. However, owing to Grizzly’s policy of con-
tinuous improvement, changes may be made at
any time with no obligation on the part of Grizzly.
For your convenience, we always keep current
Grizzly manuals available on our website at www.
grizzly.com. Any updates to your machine will be
reflected in these manuals as soon as they are
complete. Visit our site often to check for the lat-
est updates to this manual!
Model G9986 8" Drill Press -3-
Machine Data Sheet
Design Type .................................................................................................... Bench Model
Overall Dimensions:
Table Size .................................................................................................. 7'' Diameter
Overall Height .......................................................................................................291⁄4''
Overall Width ..............................................................................................................9''
Overall Depth ...........................................................................................................18''
Machine Weight ................................................................................................. 46 lbs.
Shipping Weight ................................................................................................. 50 lbs.
Box Size ....................................................................................... 24" L x 14" W x 9" H
Footprint .........................................................................................................71⁄2" x 12"
Construction:
Table ................................................................................. Precision Ground Cast Iron
Column ................................................................................... Cylindrical Ground Steel
Base & Head .................................................................................................. Cast Iron
Capacities:
Spindle Travel ............................................................................................................2"
Max. Distance, Spindle to Base ............................................................................151⁄4"
Max. Distance, Spindle to Table ...........................................................................117⁄8"
Spindle Nose ........................................................................................................ JT-33
Swing .......................................................................................................................81⁄8"
Chuck Size ...................................................................................... 1⁄2'' (13mm), Keyed
Speeds .............................................................................................. 5, Belt Controlled
Range of Speeds ...................................................620, 1100, 1720, 2340, 3100 RPM
Drilling Capacity ........................................................................... 1⁄2'' Diameter in Steel
Motor:
Type ............................................................................TEFC Capacitor Start Induction
Horsepower .......................................................................................................... 1⁄2 HP
Phase / Cycle .............................................................................. Single-Phase / 60 Hz
Amps ........................................................................................................................... 5
Voltage ..................................................................................................................110V
RPM ...................................................................................................................... 1725
Power Transfer .......................................................................................... V-Belt Drive
Bearings .............................................................. Shielded & Lubricated Ball Bearings
Switch ............................................................................. Paddle Type w/Disabling Key
Features:
Table ................... 360˚ Swivel Around Support Column,Tilt -45˚ to +45˚, Lock Levers
Slots ................................................................................................................4 slots,
1⁄2'' x 2''
Specifications, while deemed accurate, are not guaranteed.
Customer Service #: (570) 546-9663 • To Order Call: (800) 523-4777 • Fax #: (800) 438-5901
MODEL G9986 8" DRILL PRESS
MACHINE DATA
SHEET
-4- Model G9986 8" Drill Press
67
8
3
4
2
5
Identification
Figure 1. Right-side controls.
Figure 2. Left-side controls.
Refer to the list below and Figures 1 & 2 to
become familiar with the drill press controls.
1. Power Switch: Turns motor ON/OFF.
2. Belt Tension Lock: Locks motor in place.
3. Table Height Lock: Locks/unlocks to adjust
table height.
4. Lash Screw: Adjusts quill lash.
5. Downfeed Handles: Used to move the
spindle down during operation.
6. Torsion Spring: Returns quill into head-
stock.
7. Depth Stop: Limits quill travel to a pre-set
drilling depth.
8. Scale: Displays current table-tilt angle.
Refer to the list below to become familiar with the
drill press terms and definitions.
Headstock: The cast iron upper portion of the drill
press that houses the quill and supports the motor
and belt housing.
Arbor: A tapered shaft that connects the chuck to
the spindle.
Quill: Houses the spindle and bearings.
Spindle: The hollow shaft that accepts the arbor.
1
Model G9986 8" Drill Press -5-
4. ALWAYS USE HEARING PROTECTION
WHEN OPERATING MACHINERY.
Machinery noise can cause permanent
hearing damage.
5. WEAR PROPER APPAREL. DO NOT
wear loose clothing, gloves, neckties, rings,
or jewelry which may get caught in moving
parts. Wear protective hair covering to con-
tain long hair and wear non-slip footwear.
6. NEVER OPERATE MACHINERY WHEN
TIRED, OR UNDER THE INFLUENCE OF
DRUGS OR ALCOHOL. Be mentally alert
at all times when running machinery.
1. READ THROUGH THE ENTIRE MANUAL
BEFORE STARTING MACHINERY.
Machinery presents serious injury hazards
to untrained users.
2. ALWAYS USE ANSI APPROVED
SAFETY GLASSES WHEN OPERATING
MACHINERY. Everyday eyeglasses only
have impact resistant lenses, they are
NOT safety glasses.
3. ALWAYS WEAR A NIOSH APPROVED
RESPIRATOR WHEN OPERATING
MACHINERY THAT PRODUCES DUST.
Wood dust is a carcinogen and can cause
cancer and severe respiratory illnesses.
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 which are 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.
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.
This symbol is used to alert the user to useful information about
proper operation of the machine.
NOTICE
Safety Instructions for Machinery
SECTION 1: SAFETY
-6- Model G9986 8" Drill Press
7. ONLY ALLOW TRAINED AND PROP-
ERLY SUPERVISED PERSONNEL TO
OPERATE MACHINERY. Make sure oper-
ation instructions are safe and clearly
understood.
8. KEEP CHILDREN AND VISITORS AWAY.
Keep all children and visitors a safe dis-
tance from the work area.
9. MAKE WORKSHOP CHILD PROOF. Use
padlocks, master switches, and remove
start switch keys.
10. NEVER LEAVE WHEN MACHINE IS
RUNNING. Turn power OFF and allow all
moving parts to come to a complete stop
before leaving machine unattended.
11. DO NOT USE IN DANGEROUS
ENVIRONMENTS. DO NOT use machin-
ery in damp, wet locations, or where any
flammable or noxious fumes may exist.
12. KEEP WORK AREA CLEAN AND WELL
LIT. Clutter and dark shadows may cause
accidents.
13. USE A GROUNDED EXTENSION CORD
RATED FOR THE MACHINE AMPERAGE.
Undersized cords overheat and lose power.
Replace extension cords if they become
damaged. DO NOT use extension cords
for 220V machinery.
14.
ALWAYS DISCONNECT FROM POWER
SOURCE BEFORE SERVICING
MACHINERY. Make sure switch is in
OFF
position before reconnecting.
15. MAINTAIN MACHINERY WITH CARE.
Keep blades sharp and clean for best and
safest performance. Follow instructions for
lubricating and changing accessories.
16. MAKE SURE GUARDS ARE IN PLACE
AND WORK CORRECTLY BEFORE
USING MACHINERY.
Safety Instructions for Machinery
17. REMOVE ADJUSTING KEYS AND
WRENCHES. Make a habit of checking for
keys and adjusting wrenches before turn-
ing machinery ON.
18. CHECK FOR DAMAGED PARTS
BEFORE USING MACHINERY. Check
for binding and alignment of parts, broken
parts, part mounting, loose bolts, and any
other conditions that may affect machine
operation. Repair or replace damaged
parts.
19. USE RECOMMENDED ACCESSORIES.
Refer to the instruction manual for recom-
mended accessories. The use of improper
accessories may cause risk of injury.
20. DO NOT FORCE MACHINERY. Work at
the speed for which the machine or acces-
sory was designed.
21. SECURE WORKPIECE. Use clamps or
a vise to hold the workpiece when practi-
cal. A secured workpiece protects your
hands and frees both hands to operate the
machine.
22. DO NOT OVERREACH. Keep proper foot-
ing and balance at all times.
23. MANY MACHINES WILL EJECT
WORKPIECE TOWARD OPERATOR.
Know and avoid conditions that cause the
workpiece to "kickback."
24. ALWAYS LOCK MOBILE BASES
(IF USED) BEFORE OPERATING
MACHINERY.
25. BE AWARE THAT CERTAIN WOODS
MAY CAUSE AN ALLERGIC REACTION
in people and animals, especially when
exposed to fine dust. Make sure you
know what type of wood dust you will be
exposed to and always wear an approved
respirator.
Model G9986 8" Drill Press -7-
1. EYE/FACE/HAND PROTECTION. A face
shield used with safety glasses is rec-
ommended. Always keep hands and fin-
gers away from the drill bit. Never hold a
workpiece by hand while drilling! DO NOT
wear gloves when operating the drill.
2. SECURING BIT. Properly tighten and
securely lock the drill bit in the chuck.
3. CORRECT BIT. Use only round, hex, or
triangular shank drill bits.
4. ADJUSTING KEYS AND WRENCHES.
Remove all adjusting keys and wrenches
before turning the machine ON.
5. DRILLING SHEET METAL. Never drill
sheet metal unless it is securely clamped
to the table.
6. SURFACE/WORKPIECE PREP. Never
turn the drill press ON before clearing the
table of all objects (tools, scrap wood, etc.)
DO NOT drill material that does not have
a flat surface, unless a suitable support is
used.
7. DAMAGED TOOLS. Never use tools in
poor condition. Dull or damaged cutting
tools are hard to control and may cause
serious injury.
Safety for Drill Presses
8. DRILL OPERATION. Never start the drill
press with the drill bit pressed against the
workpiece. Feed the drill bit evenly into the
workpiece. Back the bit out of deep holes
to clear chips. Disconnect power, remove
drill bit, and clean table with a brush before
leaving the machine.
9. OPERATING SPEED. Always operate your
drill press at speeds that are appropriate
for the drill bit size and the material that you
are drilling.
10. MAINTENANCE/SPEED CHANGES.
Never perform maintenance or change
speeds with the machine connected to
power.
11. MOUNTING WORKPIECES. Use clamps
or vises to secure workpiece before drill-
ing. Position work so you avoid drilling into
the table.
12. TABLE LOCK. Make sure the table lock is
tightened before starting the drill press.
13. EXPERIENCING DIFFICULTIES. If at
any time you are experiencing difficulties
performing the intended operation, stop
using the machine! Contact our Service
Department at (570) 546-9663.
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 per-
sonal injury, damage to equipment, or poor
work results.
Like all machines there is danger associated
with this machine. Accidents are frequently
caused by lack of familiarity or failure to pay
attention. Use this machine with respect
and caution to lessen the possibility of
operator injury. If normal safety precautions
are overlooked or ignored, serious personal
injury may occur.
-8- Model G9986 8" Drill Press
SECTION 2: CIRCUIT REQUIREMENTS
Figure 3. Typical 5-15 plug and receptacle.
Serious personal injury could occur if you
connect the machine to the power source
before you have completed the set up pro-
cess. DO NOT connect the machine to the
power source until instructed to do so.
110V Operation
Amperage Draw
The Model G9986 motor draws the following
amps under maximum load:
Motor Draw ..............................................5 Amps
Circuit Recommendations
We recommend using a dedicated circuit for this
machine. You MUST connect your machine to a
grounded circuit that is rated for the amperage
given below. Never replace a circuit breaker on
an existing circuit with one of higher amper-
age without consulting a qualified electrician to
ensure compliance with wiring codes. If you are
unsure about the wiring codes in your area or
you plan to connect your machine to a shared
circuit, consult a qualified electrician.
110V Circuit ...........................................15 Amps
Plug/Receptacle Type
Included Plug Type ........................... NEMA 5-15
This machine must have a ground prong in
the plug to help ensure that it is grounded.
DO NOT remove ground prong from plug
to fit into a two-pronged outlet! If the plug
will not fit the outlet, have the proper outlet
installed by a qualified electrician.
Extension Cords
We do not recommend the use of extension
cords, but if you find it absolutely necessary:
• Use at least a 16 gauge cord that does not
exceed 50 feet in length!
• The extension cord must also contain a
ground wire and plug pin.
• A qualified electrician MUST size cords over
50 feet long to prevent motor damage.
Electrocution or fire could
result if this machine is
not grounded correctly or
if your electrical configu-
ration does not comply
with local and state codes.
Ensure compliance by
checking with a qualified
electrician!
Model G9986 8" Drill Press -9-
The Model G9986 was carefully packed when it
left our warehouse. If you discover the machine
is damaged after you have signed for delivery,
please immediately call Customer Service at
(570) 546-9663 for advice.
Save the containers and all packing materials for
possible inspection by the carrier or its agent.
Otherwise, filing a freight claim can be difficult.
When you are completely satisfied with the con-
dition of your shipment, you should inventory the
contents.
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!
Unpacking
SECTION 3: SET UP
The following items are needed to complete the
set up process, but are not included with your
machine:
Description Qty
• Degreaser ........................................... Varies
• Hammer or Mallet ....................................... 1
• Block of Wood ............................................ 1
• Wrench 13mm ............................................ 1
Items Needed for
Set Up
After all the parts have been removed from the
two boxes, you should have the following items:
Description Qty
A. Headstock .................................................. 1
B. Table .......................................................... 1
C. Swivel Handle ............................................. 1
D. Column ....................................................... 1
E. Base ........................................................... 1
F. Hex Bolts M8-1.25 x 20 .............................. 3
G. Flat Washers 8mm ..................................... 3
H. Chuck ......................................................... 1
I. Chuck Key .................................................. 1
J. Adjustment Wrench .................................... 1
K. Downfeed Handles ..................................... 3
L. Hex Wrenches 3, 4mm ......................1 Each
Inventory
Figure 4. G9986 Inventory.
In the event that any nonproprietary parts are
missing (e.g. a nut or a washer), we would be
glad to replace them, or for the sake of expedi-
ency, replacements can be obtained at your local
hardware store.
A
D
E
B
K
HI
J
L
F, G
C
-10- Model G9986 8" Drill Press
The unpainted surfaces are coated with a waxy
oil to protect them from corrosion during ship-
ment. Remove this protective coating with a sol-
vent cleaner or citrus-based degreaser such as
Grizzly’s G7895 Degreaser. To clean thoroughly,
some parts may need to be removed. For opti-
mum performance from your machine, make
sure you clean all moving parts or sliding
contact surfaces that are coated. Avoid chlo-
rine-based solvents, such as acetone or brake
parts cleaner, as they may damage painted sur-
faces should they come in contact. Always follow
the manufacturer’s instructions when using any
type of cleaning product.
Clean Up
Gasoline and petroleum
products have low flash
points and could cause
an explosion or fire if
used to clean machinery.
DO NOT use gasoline or
petroleum products to
clean the machinery.
Many of the solvents
commonly used to clean
machinery can be toxic
when inhaled or ingest-
ed. Lack of ventilation
while using these sol-
vents could cause seri-
ous personal health risks
or fire. Take precautions
from this hazard by only
using cleaning solvents
in a well ventilated area.
Assembly
The drill press cannot be safely operated unless
it is properly assembled.
To assemble the drill press:
1. Mount the column to the base with the three
included hex bolts and flat washers (Figure
5).
Figure 5. Column secured to base.
2. Slide the table assembly over the column and
lock into place with the swivel handle (Figure
6).
Figure 6. Table assembly installed on column.
Model G9986 8" Drill Press -11-
3. Slide the headstock onto the top of the col-
umn, center it over the base, and tighten the
two setscrews shown in Figure 7.
Figure 7. Setscrews for tightening headstock to
column.
4. Thread the three downfeed handles into the
pinion hub and use the included wrench to
tighten them, as shown in Figure 8.
Figure 8. Tightening the downfeed handles.
5. Install the knob on the belt cover with the
Phillips screw and flat washer (Figure 9).
Figure 9. Knob installed on belt cover.
6. Prepare the mating surfaces on the spindle
taper and the chuck by cleaning them thor-
oughly.
7. Retract the chuck jaws all the way inside of
the chuck.
8. Push the chuck onto the spindle taper, and
using a wood block and hammer or mallet as
shown in Figure 10, hit the chuck once with
moderate force to secure it on the spindle.
Note: Hitting the chuck directly with a steel
hammer may damage the chuck, making it
unsafe to use.
Figure 10. Seating the chuck on the spindle.
-12- Model G9986 8" Drill Press
Test Run
Wear safety glasses
whenever starting or
using machine. Failure
to comply may result in
serious personal injury.
Keep loose clothing
rolled up and out of the
way of machinery and
keep hair pulled back.
Once assembly is complete, you understand the
safety instructions, and the work area is cleared
of all tools, you are ready to test run the drill press
and test the switch disabling key to make sure
they function properly.
To test run the drill press:
1. Connect the drill press to the power source.
2. Pull up on the switch to turn the drill press
ON. The drill press should run smoothly, with
little or no vibration or rubbing noises.
If you notice anything unsual about the drill
press operation, turn if OFF and investigate
and correct the issue before operating the
machine further. If you cannot easily locate
the source of a potential problem, refer to
Troubleshooting on Page 19 or contact our
Technical Support at (570) 546-9663.
3. Remove the switch key (yellow portion of the
main switch), and try to turn the switch ON.
— If the drill press does NOT turn ON with
the key removed, then the safety feature
is working as intended.
— If the drill press turns ON with the key
removed, then the safety feature is mal-
functioning. Contact Tech Support imme-
diately.
Mounting
Once you have confirmed that your machine is
running properly, mount it to a workbench, using
the holes in the base as a guide.
The strongest mounting option is a "Through
Mount" where holes are drilled all the way
through the workbench, and hex bolts, washers,
and hex nuts are used to secure the drill press to
the workbench. Refer to the illustration in Figure
11 for details about this option.
Figure 11. Example of a through mount setup.
Figure 12. Example of a direct mount setup.
Another option for mounting is a "Direct Mount"
where the machine is simply secured to the
workbench with a lag screw and washer. Refer to
the illustration in Figure 12 for details about this
option.
Model G9986 8" Drill Press -13-
Installing/Removing
Drill Bits
Drill bits installed in the chuck must be tight
enough to not come loose during operation.
To install a drill bit:
1. UNPLUG THE DRILL PRESS!
2. Open the drill chuck wide enough to accept
the shank of the drill bit.
3. Insert the drill bit as far as possible into the
chuck WITHOUT allowing the chuck jaws to
touch the fluted portion of the bit, and hand
tighten the chuck.
Note: Make sure small bits are not trapped
between the edges of two jaws; if they are,
reinstall the drill bit or it will not be secure
enough to use for drilling.
4. Final tighten the drill bit with the chuck key.
To remove a drill bit:
1. UNPLUG THE DRILL PRESS!
2. Use the chuck key to open the drill chuck,
and catch the drill bit with a rag to protect
your hands.
SECTION 4: OPERATIONS
NOTICE
If you have never used this type of machine
or equipment before, WE STRONGLY REC-
OMMEND that you read books, trade maga-
zines, or get formal training before begin-
ning any projects. Regardless of the con-
tent in this section, Grizzly Industrial will
not be held liable for accidents caused by
lack of training.
The table can be raised/lowered and tilted left
or right. Table adjustment controls are shown in
Figure 13.
Adjusting Table
Figure 13. Table adjustment controls.
Swivel
Handle
Table Height
Use the swivel handle to loosen/tighten the table
support collar to adjust the table height.
Table Tilt
Loosen the lock bolt to tilt the table and use the
scale (Figure 14) as a guide to adjust the table tilt
to the desired angle.
Lock Bolt
NOTICE
The table scale is only a basic guide. For
precise setups, use an angle gauge/square
to set the correct table-to-spindle angle.
Figure 14. Table tilt scale.
-14- Model G9986 8" Drill Press
Figure 15. Loosening lock knob.
The belt must be moved to change speeds. A
chart under the belt cover shows the belt position
needed for a given speed.
To change speeds:
1. UNPLUG THE DRILL PRESS!
2. Loosen the lock knob (shown in Figure 15)
to take tension off of the V-belt.
Changing Speeds
3. Find your desired speed on the speed chart
(Figure 16) and move the V-belt to the indi-
cated position in the pulley grooves.
4. Pull the motor backwards to tighten the V-
belt, then tighten the belt tension lock knob
and close the belt cover.
Figure 16. Speed chart.
Figure 17. Depth stop components.
Depth Nut
Jam Nut
Depth
Stop Stud
The Model G9986 has a depth stop that allows
you to drill repeated non-through holes to the
same depth every time.
The depth stop features two hex nuts that can be
adjusted to limit spindle travel.
The upper hex nut (jam nut) tightens against the
depth nut so it doesn't move during repeated
operations.
Figure 17 shows the various components of the
depth stop.
Depth Stop
To set the depth stop:
1. Lower the drill bit to the required height.
2. Thread the depth nut down against the stop
bracket.
3. Lower the jam nut against the depth nut.
4. Using wrenches, hold the depth nut in place
and tighten the jam nut against the depth
nut.
Stop
Bracket
Model G9986 8" Drill Press -15-
The Model G9986 is designed for drilling holes
in wood or metal. The basic operation of a drill
press is lining up your drill bit with the intended
hole location, turning the drill press ON, and
using the downfeed handles to move the spinning
drill bit into the workpiece.
For safe operation and optimum results, it
is very important to follow these guidelines
when drilling:
CLEARING CHIPS: Raise the drill bit often to
clear chips and cool the drill bit. This will ease the
work of the drill press motor and extend the life of
your drill bits.
SECURING WORKPIECE TO TABLE: Secure
the workpiece to the table or in a vise that is
secured to the table before drilling.
PROTECTING TABLE: Protect the table by plac-
ing the workpiece on scrap wood, or center the
location of the hole to be drilled over the pocket
in the table when through drilling. Also, use the
depth stop to ensure that the drill bit goes no
deeper than necessary.
USING CORRECT SPEEDS: Use the correct
speed for the diameter of the drill bit being used
and the type of material being drilled. Refer to the
Drill Bit Speed Chart on Page 16 to help you
choose the correct speed for your application.
LARGE DIAMETER BITS: Large diameter drill
bits require slower spindle speeds.
SMALL DIAMETER BITS: Smaller diameter drill
bits require faster spindle speeds.
HARD MATERIAL: The harder the material,
(steel vs. wood) the slower the spindle speed.
Drilling
Larger bits turning at slower speeds tend to
grab the workpiece aggressively. This can
result in the operator's hand being pulled
into the bit or the workpiece being thrown
with great force. Clamp the workpiece to
the table when using larger bits.
SOFT MATERIAL: The softer the material, the
faster the spindle may turn. However, plastics can
melt at too high of a spindle speed.
LUBRICANT: Use some form of lubricant on
all materials except wood. Refer to Lubrication
Suggestions on Page 16 to find the correct lubri-
cation for your application.
DRILLING ACCURACY: To prevent drill bit wan-
dering and ensure accurate placement of holes,
mark the hole location with a center punch before
drilling. Also consider using a center-point drill to
start the hole.
PLUG/ROSETTE CUTTERS: Plug cutters and
rosette cutters are for wood only. However, car-
bide-tipped bits and cutters cut at a higher speed
and can cut materials other than wood, depending
on the cutter type.
5-FLUTE/2-FLUTE CUTTERS: Use a 5-flute cut-
ter when cutting into plastics, brass, aluminum,
and mild steel. A 2-flute cutter can aggressively
grab the workpiece and damage the tool if used
with materials other than wood.
SPADE BITS AND PLASTIC: When drilling plas-
tic with a spade bit, use a spade bit with spurs.
HOLE SAWS: When using hole saws, apply firm
and even pressure, so the saw teeth contact the
surface all at the same time—not at an angle. You
can also flip the workpiece and finish drilling from
the other side to prevent tear-out.
-16- Model G9986 8" Drill Press
Choosing Speeds
Twist/Brad Point Drill BitsSoft WoodHard WoodPlasticBrassAluminumMild Steel
1/16" – 3/16" 3000 2500 2500 2500 3000 2500
13/64" – 3/8" 2000 1500 2000 1250 2500 1250
25/64" – 5/8" 1500 750 1500 750 1500 600
11/16" – 1" 750 500 1000 400 1000 350
Spade/Forstner BitsSoft WoodHard WoodPlasticBrassAluminumMild Steel
1/4" – 1/2" 2000 1500
9/16" – 1" 1500 1250
1-1/8" – 1-7/8" 1000 750
2–3" 500 350
Hole SawsSoft WoodHard WoodPlasticBrassAluminumMild Steel
1/2" – 7/8" 500 500 600 600 600 500
1" – 1-7/8" 400 400 500 500 500 400
2" – 2-7/8" 300 300 400 400 400 300
3" – 3-7/8" 200 200 300 300 300 200
4" – 5" 100 100 200 200 200 100
Rosette CuttersSoft WoodHard WoodPlasticBrassAluminumMild Steel
Carbide Insert Type 350 250
One-Piece Type 1800 500
Tenon/Plug CuttersSoft WoodHard WoodPlasticBrassAluminumMild Steel
3/8" – 1/2" 1200 1000
5/8" – 1" 800 600
Using the Drill Bit Speed Chart
The chart shown in Figure 18 is intended as
a 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.
Lubrication Suggestions
Wood ...........................................................None
Plastics ........................................... Soapy Water
Brass .............................. Water-Based Lubricant
Aluminum ......................Paraffin-Based Lubricant
Mild Steel ..............................Oil-Based Lubricant
Larger bits turning at slower speeds tend to
grab the workpiece aggressively. This can
result in the operator's hand being pulled
into the bit or the workpiece being thrown
with great force. Clamp the workpiece to
the table when using larger bits.
Figure 18. Drill bit speed chart.
Model G9986 8" Drill Press -17-
SECTION 5: ACCESSORIES
Figure 21. Model G8233 Keyless Drill Chuck.
G8233—3⁄8" Keyless Drill Chuck JT #33
Industrial grade keyless chucks are excellent for
quick bit changes. Knurled grips and exceptional
accuracy make these chucks an indispensable
part of any shop.
G2500—20-PC Regular Sanding Drum Set
Use on your drill press, lathe, or hand drill. This kit
consists of 5 drums in popular 1⁄2" x 1⁄2", 3⁄4" x 1",
1"x 1", 11⁄2" x 11⁄2", and 2" x 11⁄2" sizes. Comes with
50, 80 and 120 grit sizes for each drum.
Figure 19. Model G2500 20-PC Sanding Drum
Set.
Figure 20. Model G8865 13-PC Alloy Drill Bits.
G8865—Cobalt Alloy Drill Bits 13-PC. Set
G8866—Steelex® Cobalt Alloy Drill Set 21-PC
G8867—Steelex® Cobalt Alloy Drill Set 29-PC
Cobalt Alloy bits will retain their edge sharpness
longer than normal HSS bits, resulting in a signifi-
cant saving of time and money in the workshop.
Includes a heavy-gauge steel index case for
storing. G8865: 1⁄16" -1⁄4"; G8866: 1⁄16"- 3⁄8"; G8867:
1⁄16"-1⁄2".
G3639—Power Twist® V-Belt 3⁄8" x 48"
Smooth running with less vibration and noise
than solid belts. The Power Twist® V-belts can
be customized in minutes to any size—just add
or remove sections to fit your needs. Size: 3⁄8" x
48"; replaces all "M" sized V-belts. Requires one
Power Twist® V-belt to replace the stock V-belt on
your Model G9986. Well worth it!
Figure 22. G3639 Power Twist® V-Belt installed.
-18- Model G9986 8" Drill Press
Always disconnect power
to the machine before
performing maintenance.
Failure to do this may
result in serious person-
al injury.
Cleaning the Model G9986 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. Treat all unpainted cast iron and
steel with a non-staining lubricant after cleaning.
Cleaning
SECTION 6: MAINTENANCE
Lubrication
V-Belt
Since all bearings are shielded and permanently
lubricated, simply leave them alone until they
need to be replaced. DO NOT lubricate them.
Keep quill, spindle, column, and table top well
lubricated to prevent rust. Protect the unpainted
cast iron surfaces by wiping them clean after
every use—this ensures moisture from wood dust
does not remain on bare metal surfaces.
Keep these surfaces rust-free with regular appli-
cations of products like G96® Gun Treatment,
SLIPIT®, or Boeshield® T-9 (see the current
Grizzly Catalog for more details).
Inspect regularly for tension and wear. See
Changing Speeds on Page 14 for more
information about removing/installing the belt if
you need help with replacement.
Regular periodic maintenance on your drill press
will ensure optimum performance. Make a habit
of inspecting your machine each time you use it.
Check for the following conditions and repair or
replace when necessary:
• Loose mounting bolts.
• Worn switch.
• Worn or damaged cords and plugs.
• Damaged V-belt.
• Any other condition that could hamper the
safe operation of this machine.
• Loose chuck/arbor.
General
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