RADIAL DRILL PRESS
MODEL G1131
INSTRUCTION MANUAL
1995 BY GRIZZLY IMPORTS, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY IMPORTS, INC.
OCTOBER, 1995. PRINTED IN USA
DISCONTINUED MACHINE MANUAL DISCLAIMER
THE INFORMATION IN THIS MANUAL REPRESENTS THE LAST CONFIGURATION OF THE MACHINE BEFORE IT WAS DISCONTINUED.
MACHINE CONFIGURATIONS MAY HAVE CHANGED AS PRODUCT IMPROVEMENTS WERE INCORPORATED. IF YOU OWN AN EARLIER
VERSION OF THE MACHINE, THIS MANUAL MAY NOT EXACTLY DEPICT YOUR MACHINE . CONTACT CUSTOMER SERVICE IF YOU
HAVE ANY QUESTIONS ABOUT DIFFERENCES. PREVIOUS VERSIONS ARE NOT AVAILABLE ONLINE.
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Section 1:
Introduction To The
Model G1131 Radial
Drill Press
Most importantly, we stand behind our
machines. We have two excellent regional
service departments available, should the
need arise. If you have any service ques-
tions or parts requests, please call or write
the appropriate location listed below.
Grizzly Imports, Inc. is proud to offer the
Model G1131 Radial Drill Press. When used
according to the guidelines stated in this
manual, you can expect years of trouble-
free, enjoyable operation from this fine
machine.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
The Model G1131 is intended for home and
medium-duty professional use. It features a
1,720 R.P.M., /2 HP capacitor-start motor,
1
Phone:(570) 546-9663
Fax:(800) 438-5901
E-Mail: [email protected]
ON/OFF switch with a removable security
lock, and heavy-duty cast iron table and
base for long-lasting dependability.
The single-phase, 110V motor uses shield-
ed ball bearings, which require no lubrica-
tion for the life of the bearings. The belt-dri-
ven spindle assembly features 5 speeds,
ranging from 580 to 3,000 RPM. Power is
transferred to your workpiece via a 1/2" key-
adjustable chuck.
To operate this, or any power tool, safely
and efficiently, it is essential to become as
familiar with it as possible. The time you
invest before you begin to use your Model
G1131 will be time well spent. DO NOT
operate this machine until you are com-
pletely familiar with the contents of this man-
ual.
This manual is designed to offer tips on
safety and proper operating procedures, as
well as providing you with detailed parts lists
and diagrams. If you have any questions or
criticisms regarding the Model G1131 or this
manual, please direct them to:
REMEMBER: ALWAYS WEAR ANSI-
APPROVED EYEWEAR AND HEAR-
ING PROTECTION WHEN OPERAT-
ING THIS, OR ANY OTHER SHOP
MACHINERY.
Manager, Technical Documentation
Grizzly Industrial, Inc.
P.O. Box 2069
Bellingham, WA 98227-2069
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The specifications, drawings, and pho-
tographs illustrated in this manual represent
the Model G1131 as supplied when the
manual was prepared. However, due to
Grizzly’s policy of continuous improvement,
changes or modifications may be made at
any time with no obligation on the part of
Grizzly. Whenever possible though, we
send manual updates to all owners of a par-
ticular tool or machine. Should you receive
one, add the new information to this manual
and keep it for later reference.
eral assistance or replacement parts, please
contact the appropriate regional service
department listed in the introduction.
Additional information sources are neces-
sary to realize the full potential of this
machine. Trade journals, woodworking
magazines, and your local library are good
places to start.
WARNING!
Like all power tools, there is danger associ-
ated with the Model G1131 Radial Drill
Press. Use the tool with respect and caution
to lessen the possibility of mechanical dam-
age or operator injury. If normal safety pre-
cautions are overlooked or ignored, injury to
the operator or others in the area is possi-
ble.
The information in this manual has been
obtained from sources we believe to be reli-
able and as up-to-date as possible. We
have included some important safety mea-
sures which are essential to this machine’s
operation. While most safety measures are
generally universal, Grizzly reminds you that
each workshop is different and safety rules
should be considered as they apply to your
specific situation.
The Model G1131 was specifically designed
for precision drilling operations in wood and
metal. DO NOT MODIFY AND/OR USE
THIS DRILL PRESS FOR ANY OTHER
PURPOSE. Modifications or improper
use of this tool will void the warranty. If
you are confused about any aspect of this
machine, DO NOT use it until you have
answered all your questions.
We recommend you keep a copy of our cur-
rent catalog for complete information
regarding Grizzly warranty and return policy.
If you need additional technical information
relating to this machine, or if you need gen-
HORIZONTAL
COLUMN
BELT
ENCLOSURE
FORE/AFT
TRAVEL LOCK
ON/OFF
SWITCH
DEPTH STOP
ADJUSTMENT
SPINDLE
TRAVEL CONTROL
VERTICAL
COLUMN
DRILL
CHUCK
TABLE HEIGHT
ADJUSTMENT
DRILL
TABLE
CAST IRON
BASE PLATE
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Section 2:
Safety Guidelines
11. NEVER STAND ON, OR LEAN ON THE
TABLE SAW.
1. KNOW YOUR POWER TOOL. Read the
owner’s manual carefully. Learn the tool’s
applications and limitations, as well as its
particular hazards.
12. USE SAFETY GLASSES AND EAR
PROTECTION. Also use a DUST MASK
if the cutting operation is dusty.
2. KEEP ALL GUARDS IN PLACE and in
working order.
13. DO NOT OVERREACH. Keep proper
footing and balance at all times.
3. GROUND ALL TOOLS. If an adapter is
used to accommodate a two-prong
receptacle, the adapter plug must be
attached to a known ground. Never
remove the grounding prong.
14. MAINTAIN TOOLS IN TOP CONDITION.
Keep tools sharp and clean for best and
safest performance. Follow instructions
for lubricating and changing accessories.
4. REMOVE ADJUSTING KEYS AND
WRENCHES. Make it a habit to check
that keys and wrenches are removed
from the machine before turning it on.
15. DISCONNECT TOOLS FROM POWER
before servicing and when changing
accessories, such as blades, bits, and
cutters.
5. KEEP WORK AREA CLEAN. Cluttered
16. AVOID ACCIDENTAL STARTING. Make
sure the switch is in the “OFF” position
before plugging in the cord.
areas and benches invite accidents.
6. AVOID
DANGEROUS
ENVIRON-
MENTS. Do not use power tools in damp
or wet locations or expose them to rain.
Keep your work area well lighted.
17. CHECK DAMAGED PARTS. Do not
operate the machine until you are certain
it is in perfect running condition.
7. KEEP CHILDREN AND VISITORS
AWAY. All children and visitors should be
kept a safe distance away from your work
area.
18. NEVER LEAVE THE TOOL RUNNING
UNATTENDED - TURN POWER OFF.
Do not leave the tool until it comes to a
full stop.
8. MAKE WORKSHOP CHILD-PROOF
with padlocks, master switches, or by
removing starter keys.
19. DO NOT USE THE TOOL IF USING
DRUGS, ALCOHOL, OR MEDICATION.
20. DO NOT WORK IN HASTE or operate
9. DO NOT FORCE TOOL. Tools work bet-
ter and safer when they are allowed to
perform at their own speed. A speed
chart located in this manual offers specif-
ic guidelines for drilling operations.
machine if you are fatigued.
21. IF THERE IS SOMETHING YOU DO
NOT KNOW OR UNDERSTAND
ABOUT THIS TOOL, DO NOT OPER-
ATE IT! Ask for help first. Confusion can
lead to disaster.
10. WEAR PROPER APPAREL. Do not
wear loose clothing, gloves, neckties, or
jewelry that can get caught in moving
parts. Non-slip footwear must be worn.
Tie back, or wear a hat over long hair.
22. BAD HABITS ARE DANGEROUS.
Review all safety procedures often.
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Section 3:
Controls And
Adjustments
TABLE ADJUSTMENTS
HEIGHT ADJUSTMENT
ANGLE ADJUSTMENT
Table height adjustment on the Model
G1131 Radial Drill Press is controlled by a
rack-and-pinion gearing system. To control
the height of the table:
The table’s angle relative to spindle travel
can be adjusted to 45° left or right. To adjust
the table tilt:
1. Loosen the hex bolt below the table
support.
1. Release the locking lever on the rear of
the table’s gear housing, mounted on
the vertical column.
2. Tilt the table to the desired angle, using
the gauge built into the table support.
2. Turn the adjustment crank clockwise or
counterclockwise to achieve a desired
table height.
3. Once the table is adjusted to the
desired angle, re-tighten the bolt.
3. Re-tighten the locking lever to keep the
table from moving out of its desired
position.
SIDE-TO-SIDE ADJUSTMENT
The table can be rotated from side-to-side,
or completely 180° out of the way of spindle
travel, so larger objects can be placed on
the work surface built into the base of the
drill press. To rotate the table:
1. Loosen the locking lever at the back of
the table’s gear housing.
2. Move the table to its desired position.
3. Re-tighten the locking lever.
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4. Loosen the depth stop knob located at
the hub of the spindle height wheel and
rotate the depth scale counterclockwise
until the pointer reaches zero.
ON/OFF SWITCH
The Model G1131 Radial Drill Press is
equipped with a key-activated ON/OFF
switch for added safety. To switch on the
drill press:
5. Tighten the depth stop knob and
release the height wheel.
1. Insert the safety key into the switch
mechanism located at the front of the
spindle assembly.
Once the procedure is complete, your drill
press will deliver uniformly deep holes until
you choose to change your settings.
2. Flip the key to the ON position.
3. When drilling is complete, switch the
key to the OFF position. When the drill
press is not in use, remove the key from
the switch and store it in a safe place.
SPINDLE RETURN SPRING
Although the spring-operated spindle return
is set at the factory, there may come a time
when it’s necessary to adjust its level of
tightness.
DEPTH STOP ADJUSTMENT
The Model G1131 Radial Drill Press offers
an adjustable depth stop for precision con-
trol when making repetitive cuts to an exact
depth. To set the depth stop:
Should adjustment be required, carefully
loosen the two locknuts on the outside of the
spring assembly (located on the spindle
housing)
1. Adjust your table so your workpiece is
close enough to your drill bit to allow
travel to the full depth of cut you desire.
Firmly grasp the spring housing as you
loosen the locknuts and gently pull the hous-
ing away from the spindle until the notches
clear the retainer tab. Turn the housing
clockwise – one notch at a time – until the
proper tension is attained. Tighten the lock-
nuts. Tighten the two nuts together using
two wrenches.
2. Drill your first hole to the depth you
seek.
3. Turn off the drill press and lower the
spindle until the bit reaches the base of
your cut. With one hand, maintain that
depth.
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SPINDLE SPEEDS
TILTING DRILL HEAD
The Model G1131 features a five-speed belt
drive system – so you can adjust drill
speeds to match your project. To change
spindle speeds:
Adjust the drill head up to 45° clockwise or
counterclockwise by loosening the tilt lock
knob on the right side of the horizontal col-
umn support. An angle guide at the front of
the column support allows you to determine
the angle of spindle travel.
1. Turn off and unplug the drill press and
allow all moving parts to stop.
Remember to square your spindle assembly
to the table with a machinists or combination
square when returning to the zero position.
2. Loosen the tensioning knob located just
forward of the motor mount.
3. Open the top of the belt housing and
reduce tension on the belts by pushing
the motor toward the front of the drill
press.
ROTATING DRILL HEAD
The drill head on the Model G1131 Radial
Drill Press can be rotated a full 360° to han-
dle projects too large to fit on the table or
base support. To rotate the head, loosen the
4mm setscrews on the left side of the hori-
zontal column support. Once loosened, the
drill head can be rotated to fit your project.
Keep in mind, while rotating the head, that
the electrical cord must turn along with the
machine. Pay attention that the cord isn’t
pinched or snagged as a result of the rota-
tion.
4. Move the V-belt to a position that
reflects the spindle speed you desire.
See the illustration below for belt
speeds. Always move the end of the
belt that will move toward a smaller pul-
ley first.
5. When you have relocated the belt, re-
tension the motor mount. A properly
1
tensioned belt will have about /2" of
FORE/AFT MOVEMENT
deflection mid-way between pulleys.
The drill head on the Model G1131 Radial
Drill Press can be moved to front and back
to accommodate smaller or larger projects.
To adjust, loosen the tilt lock knob and slide
the horizontal column forward or backward
to suit your needs. Remember to ensure
that the spindle assembly is square to the
table before operating the machine.
6. Tighten the tensioning knob and close
the belt housing cover.
Never attempt to alter speeds by angling the
belt between un-matched pulleys. Doing so
could damage the belt and burn out bear-
ings in the spindle assembly.
3400 RPM
2325 RPM
1700 RPM
1140 RPM
740 RPM
MOTOR
SPINDLE
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SECTION 4 — MACHINE DATA
GRIZZLY MODEL G1131 RADIAL DRILL PRESS
Design Type ..........................................................................................................Bench Model
Overall Dimensions:
Table Size ................................................................................................................85/8"W x 91/8
Overall Height ......................................................................................................................311/2
"
"
Overall Width............................................................................................................................12"
Overall Depth............................................................................................................................34"
Weight (Net)........................................................................................................................84 lbs.
Construction:
Table ..............................................................................................................................Cast Iron
Column ........................................................................................................................Steel Tube
Base and Head ..............................................................................................................Cast Iron
Motor:
Type ............................................................................................................TEFC Capacitor Start
Horsepower ..........................................................................................................................1/3 HP
Phase/Cycle....................................................................................................Single Phase/60Hz
Voltage ..................................................................................................................................110V
Amps............................................................................................................................................6
RPM ......................................................................................................................................1720
Bearings ..........................................................................................Sealed & Lubricated For Life
Capacities:
Spindle Travel ........................................................................................................................27/8
Max. Spindle-to-base ............................................................................................................151/2
Max. Spindle-to-table ............................................................................................................101/2
"
"
"
Spindle Taper ......................................................................................................................JT 33
Swing ......................................................................................................................................71/2
"
"
Chuck Size................................................................................................................................1/2
Speeds ............................................................................................740, 1140, 1700, 2325, 3400
Quill Diameter ......................................................................................................................35mm
Features:
Table Tilt ......................................................................................................0°-45° Left and Right
Table Swing............................................................................................................................360°
Drive ....................................................................................................................Five Step Pulley
Table Locks ......................................................................................................................Positive
Table Height Adjustment ............................................................................................Worm Gear
Max. Spindle-to-base ............................................................................................................151/2
"
Head Tilt..................................................................................................0°-90° Right, 0°-45° Left
Specifications, while deemed accurate, are not guaranteed.
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SECTION 5 — PARTS LIST & DIAGRAM
Diag# Part #
Description
BASE
Diag# Part #
Description
RUBBER WASHER
QUILL
6202-2RS BEARING
SPINDLE
1
2
3
PG1131001
PG1131002
PB07
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
PG1131039
PG1131040
PB202
FLANGE
HEX BOLT 5/16-18X3/4
RACK
4
5
6
7
PG1131004
PG1131005
PG1131006
PG1131007
PW01
PG1131042
PG1131043
PG1131044
PG1131045
PG1131046
PG1131047
PG1131048
PG1131049
PG1131050
PB201
VERT. COLUMN
CRANK
CHUCK KEY
1
/2" CHUCK
TABLE BRACKET
SCALE SLEEVE
PINION
8
FLAT WASHER 1/2
"
HEX BOLT 1/2-12X1
TABLE
HUB
HANDLE
9
PB53
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
PG1131010
PG1131011
PG1131012
PG1131013
PSS02
PG1131015
PG1131016
PG1131017
PG1131018
PG1131019
PG1131020
PG1131021
PG1131131
PG1131023
PS04
DEGREE SCALE
12MM RET. RING
6201-2RS BEARING
POWER CORD
STSCRW 1/4-20X3/8
PH. SCRW 1/4-20X3/8
DOWN FD SCALE
RIVET
POINTER
LOCK KNOB
SPEC SETSCRW
HEX NUT 5/16-18
HANDLE
CLAMP BOLT
LCK HNDLE ASSY
COLUMN BRACKET
STSCRW 5/16-18X3/8
LOCK KNOB
PG1131052
PSS03
MOUNT PLATE
SPRING
PS07
PG1131055
PG1183108
PG1131057
PG1131058
PG1131059
PN02
PG1131061
PG1131062
PG1131063
PS06
PG1131065
PG1131066
PG1131067
PW07
PG1131069
PG1131070
PG1131071
PG1131072
PSS01M
ADJ. BOLT
MOTOR
PULLEY COVER
MOTOR PULLEY
V-BELT
KNOB
PH. SCRW 1/4-20X1/2
SPINDLE PULLEY
DRIVE SLEEVE
40MM RET. RING
6203-2RS BEARING
KNOB
LABEL
PG1131025
PG1131026
PG1131027
PB203
PG1131029
PLW01
WIRE STRAP
PH. SCRW 10-24X3/8
MTR/SWITCH CORD
SPEED CHART
SPEC. BOLT
FLAT WASHER 5/16"
TABLE SCALE
PIN
WORM SHAFT
HANDLE
STSCRW M6-1.0X10
10T GEAR
5/16" LOCK WSHR
1
PLN08
/2-20 LOCK NUT
PG1131032
PG1131033
PG1131034
PSW07
PSS02
PS22
PG1131038
COVER W/SPRING
HORIZ. COLUMN
HEADSTOCK
SWITCH
STSCRW 5/16-18X3/8
PH. SCRW 10-24X5/8
SW. MOUNT CVR
PG1131074
PG1131075
PG1131076
SAFETY LABEL
LOCKING GIB
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G1131 RADIAL DRILL PRESS
23
52
66
21
53
24
67
68
54
22
65
20
64
16
62
63
53
25
18
15
13
17
26
14
36
27
24
61
49
56
28
28
27
76
33
11
12
69
7
34
71
31
70
10
32
60
36
74
6
75
59
72
73
46
38
35
57
56
50
51
8
58
45
9
39
4
5
37
40
29
55
48
47
41
3
30
2
42
1
43
44
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SECTION 6 — WARRANTY INFORMATION
Grizzly Imports, 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, negli-
gence, 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 prod-
uct and any legal actions brought against
Grizzly shall be tried in the State of
Washington, County of Whatcom.
To take advantage of 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 car-
ton. We will not accept any item back with-
out this number. Proof of purchase must
accompany the merchandise.
The manufacturers reserve the right to
change specifications at any time because
they constantly strive to achieve better qual-
ity 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.
Please feel free to write or call us if you have
any questions about the machine or the
manual.
We shall in no event be liable for death,
injuries to persons or property or for inci-
dental, contingent, special, or consequential
damages arising from the use of our prod-
ucts.
Thank you again for your business and con-
tinued support. We hope to serve you again
soon.
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