Grizzly Drill G1131 User Manual

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.  
 
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  
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  
 
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  
 
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.  
 
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.  
 
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.  
 
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  
 
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.  
 
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  
 
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  
 
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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