Grizzly Drill 1008 User Manual

VERTICAL MILLING MACHINE  
MODEL G1004/G1008  
INSTRUCTION MANUAL  
COPYRIGHT © 1999 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.  
REVISED OCTOBER, 1999. PRINTED IN U.S.A.  
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SECTION 1: SAFETY  
For Your Own Safety Read Instruction  
Manual Before Operating This Equipment  
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 substi-  
tute for proper accident prevention measures.  
Indicates an imminently hazardous situation which, if not  
avoided, WILL result in death or serious injury.  
Indicates a potentially hazardous situation which, if not avoid-  
ed, COULD result in death or serious injury.  
Indicates a potentially hazardous situation which, if not avoid-  
ed, MAY result in minor or moderate injury. It may also be  
used to alert against unsafe practices.  
This symbol is used to alert the user to useful information  
about proper operation of the equipment.  
NOTICE  
Safety Instructions For Power Tools  
5. KEEP CHILDREN AND VISITORS  
AWAY. All children and visitors should be  
kept a safe distance from work area.  
1. KEEP GUARDS IN PLACE and in working  
order.  
2. REMOVE ADJUSTING KEYS AND  
WRENCHES. Form habit of checking to  
see that keys and adjusting wrenches are  
removed from tool before turning on.  
6. MAKE WORK SHOP CHILD PROOF with  
padlocks, master switches, or by removing  
starter keys.  
7. DON’T FORCE TOOL. It will do the job  
better and safer at the rate for which it was  
designed.  
3. KEEP WORK AREA CLEAN. Cluttered  
areas and benches invite accidents.  
4. DON’T USE IN DANGEROUS ENVIRON-  
MENT. Don’t use power tools in damp or  
wet locations, or where any flammable or  
noxious fumes may exist. Keep work area  
well lighted.  
8. USE RIGHT TOOL. Don’t force tool or  
attachment to do a job for which it was not  
designed.  
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G1004/1008 Vertical Milling Machine  
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Safety Instructions For Power Tools  
9. USE PROPER EXTENSION CORD. Make  
sure your extension cord is in good condi-  
tion. Conductor size should be in accor-  
dance with the chart below. The amperage  
rating should be listed on the motor or tool  
nameplate. An undersized cord will cause a  
drop in line voltage resulting in loss of  
power and overheating. Your extension  
cord must also contain a ground wire and  
plug pin. Always repair or replace exten-  
sion cords if they become damaged.  
13. DON’T OVERREACH. Keep proper foot-  
ing and balance at all times.  
14. MAINTAIN TOOLS WITH CARE. Keep  
tools sharp and clean for best and safest  
performance. Follow instructions for lubri-  
cating and changing accessories.  
15. DISCONNECT TOOLS before servicing  
and changing accessories, such as blades,  
bits, cutters, and the like.  
Minimum Gauge for Extension Cords  
16. REDUCE THE RISK OF UNINTENTION-  
AL STARTING. Make sure switch is in off  
position before plugging in.  
LENGTH  
AMP RATING  
0-6  
7-10  
11-12  
13-16  
25ft 50ft 100ft  
18  
18  
16  
14  
12  
10  
16  
16  
16  
12  
12  
10  
16  
14  
14  
12  
10  
No  
17. USE RECOMMENDED ACCESSORIES.  
Consult the owner’s manual for recom-  
mended accessories. The use of improper  
accessories may cause risk of injury.  
17-20  
21-30  
18. CHECK DAMAGED PARTS. Before fur-  
ther use of the tool, a guard or other part  
that is damaged should be carefully  
checked to determine that it will operate  
properly and perform its intended function.  
Check for alignment of moving parts, bind-  
ing of moving parts, breakage of parts,  
mounting, and any other conditions that  
may affect its operation. A guard or other  
part that is damaged should be properly  
repaired or replaced.  
10. WEAR PROPER APPAREL. Do not wear  
loose clothing, gloves, neckties, rings,  
bracelets, or other jewelry which may get  
caught in moving parts. Non-slip footwear  
is recommended. Wear protective hair cov-  
ering to contain long hair.  
11. ALWAYS USE SAFETY GLASSES. Also  
use face or dust mask if cutting operation is  
dusty. Everyday eyeglasses only have  
impact resistant lenses, they are NOT safe-  
ty glasses.  
19. NEVER LEAVE TOOL RUNNING UNAT-  
TENDED. TURN POWER OFF. Don’t  
leave tool until it comes to a complete stop.  
12. SECURE WORK. Use clamps or a vise to  
hold work when practical. It’s safer than  
using your hand and frees both hands to  
operate tool.  
G1004/1008 Vertical Milling Machine  
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Additional Safety Instructions For The  
Vertical Milling Machine  
9. ALWAYS use a brush to remove chips  
after the cutter has stopped. Never use a  
rag to remove chips.  
1. DO NOT use until unit is completely  
assembled and installed according to  
instructions.  
2. DO NOT use the mill until all controls and  
10. NEVER operate mill if any part is damaged  
or broken until it is properly repaired or  
replaced.  
adjustments are understood.  
3. BE SURE drill bit or cutter is securely  
locked in the chuck, collet or holder.  
11. BE SURE cutter, workpiece and machine  
parts have proper working clearance  
throughout the range of motion you intend  
to use.  
4. ALWAYS USE THE RECOMMENDED  
SPEEDS and feeds with milling cutters  
and drill bits.  
12. NEVER place your fingers in a position  
where drill or cutter could contact them if a  
part shifts unexpectedly. Serious personal  
injury could result.  
5. ADJUST TABLE OR DEPTH STOP to  
prevent drilling into table work surface.  
6. KEEP FLOOR AREA around the mill free  
from oil, tools, and chips.  
13. NEVER perform layout, assembly, or  
setup work on the mill while a bit or cutter  
is rotating.  
7. NEVER USE YOUR HANDS TO HOLD  
WORKPIECE during milling or drilling.  
Clamp it to work surface or use a vise to  
secure workpiece and prevent rotation.  
14. SHUT OFF POWER, remove drill or cut-  
ting tool, and clean tool before leaving  
machine.  
8. NEVER HANDLE SHARP CUTTERS with  
bare hands. Paper towels or shop rags  
wrapped around them will help to avoid  
injury.  
Operating this equipment has the potential  
to propel debris into the air which can cause  
eye injury. Always wear safety glasses or  
goggles when operating equipment.  
Everyday glasses or reading glasses only  
have impact resistant lenses, they are not  
safety glasses. Be certain the safety glass-  
es you wear meet the appropriate standards  
of the American National Standards  
Institute (ANSI).  
Like all power tools, there is danger asso-  
ciated with the Model G1004/G1008 Milling  
Machine. Accidents are frequently caused  
by lack of familiarity or failure to pay atten-  
tion. Use this tool with respect and caution  
to lessen the possibility of operator injury.  
If normal safety precautions are over-  
looked or ignored, serious personal injury  
may occur.  
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G1004/1008 Vertical Milling Machine  
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SECTION 2: CIRCUIT REQUIREMENTS  
110V Operation  
Grounding  
The motor supplied with the G1004/G1008 is a  
dual-voltage 110/120V or 220/240V motor. (For  
information on operating at 220V, see the section  
following entitled 220V Operation.) Under normal  
use, the motor draws approximately 16 amps @  
110V, therefore it should be connected to a circuit  
that is protected by a 20 amp fuse or circuit  
breaker. This should be satisfactory for normal  
use, while providing enough protection against  
motor damage caused by power surges. Grizzly  
recommends that the circuit you use should be  
dedicated, (i.e., the G1004 or G1008 should pro-  
vide the only draw from that circuit). If frequent  
circuit failures occur when using the milling  
machine, contact our service department or your  
local electrical contractor. You are cautioned that  
equipment returned to us for service that shows  
evidence of being over-fused will be repaired or  
replaced totally at the customer’s expense,  
regardless of the present warranty status.  
In the event of a malfunction or breakdown,  
grounding provides a path of least resistance for  
electric current to reduce the risk of electric  
shock. This tool must be equipped with an elec-  
tric cord having an equipment-grounding conduc-  
tor which must be properly connected to a  
grounding plug. The plug must be plugged into a  
matching outlet that is properly installed and  
grounded in accordance with all local codes and  
ordinances.  
It is also necessary to connect a cord and plug to  
the machine. Be sure that both the plug and cord  
are rated at 20 amps and must include a ground-  
ing wire. See Figure 1.  
Figure 1. Grounded plug configuration.  
Extension Cords  
If you find it necessary to use an extension cord  
with the Model G1004/G1008, make sure the -  
cord is rated Hard Service (grade S) or better.  
Refer to the chart in the standard safety instruc-  
tions to determine the minimum gauge for the  
extension cord.  
Potential for electrical shock hazard, this  
equipment must be grounded. Verify that  
any existing electrical outlet and circuit you  
intend to plug into is actually grounded. If it is  
not, it will be necessary to run a separate 12  
A.W.G. copper grounding wire from the outlet  
to a known ground. Under no circumstances  
should the grounding pin from any three-  
pronged plug be removed. Serious personal  
injury may occur.  
The extension cord must also contain a ground  
wire and plug pin. Always repair or replace exten-  
sion cords when they become worn.  
G1004/1008 Vertical Milling Machine  
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220V Operation  
Extension Cords  
The Model G1004/G1008 has a motor which can  
be operated on a 220V single phase circuit. In  
order to operate at 220V it is necessary to rewire  
the motor connections (refer to the wiring dia-  
grams at the back of this manual) and to add a  
220V capable cord and plug. The style of plug  
you require will depend upon the type of service  
you currently have or plan to install. Figure 2  
shows recommended plug styles.  
We do not recommend the use of extension cords  
on 220V equipment. It is much better to arrange  
the placement of your equipment and the  
installed wiring to eliminate the need for exten-  
sion cords. Should it be necessary to use an  
extension make sure the cord is rated Hard  
Service (grade S) or better.  
The motor will safely draw about 8 amps at 220V  
under load, therefore it should be connected to a  
circuit that is protected by a 15 amp fuse or circuit  
breaker. This should be satisfactory for normal  
use, while providing enough protection against  
motor damage caused by power surges. Grizzly  
recommends that the circuit you use should be  
dedicated, (i.e., the G1004 or G1008 should pro-  
vide the only draw from that circuit). If frequent  
circuit failures occur when using the milling  
machine, contact our service department or your  
local electrical contractor. You are cautioned that  
equipment returned to us for service that shows  
evidence of being over-fused will be repaired or  
replaced totally at the customer’s expense,  
regardless of the present warranty status.  
Grounding  
In the event of a malfunction or breakdown,  
grounding provides a path of least resistance for  
electric current to reduce the risk of electric  
shock. This tool must be equipped with an elec-  
tric cord having an equipment-grounding conduc-  
tor which must be properly connected to a  
grounding plug. The plug must be plugged into a  
matching outlet that is properly installed and  
grounded in accordance with all local codes and  
ordinances.  
Locking  
Standard  
Potential for electrical shock hazard, this  
equipment must be grounded. Verify that  
any existing electrical outlet and circuit you  
intend to plug into is actually grounded. Under  
no circumstances should the grounding pin  
from any three-pronged plug be removed.  
Serious personal injury may occur.  
Figure 2. Two typical outlet/plug configurations.  
We have covered some basic electrical  
requirements for the safe operation of your  
Milling Machine. These requirements are  
not necessarily comprehensive. You must  
be sure that your particular electrical con-  
figuration complies with local and state  
codes. Ensure compliance by checking  
with your local municipality or a licensed  
electrician.  
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SECTION 3: INTRODUCTION  
Most importantly, we stand behind our machines.  
If you have any service questions or parts  
requests, please call or write us at the location  
listed below.  
Commentary  
Grizzly Industrial, Inc. is proud to offer the Model  
G1004/G1008 Milling Machine. These Milling  
Machines are a part of Grizzly’s growing family of  
fine metalworking machinery. When used accord-  
ing to the guidelines stated in this manual, you  
can expect years of trouble-free, enjoyable oper-  
ation.  
Grizzly Industrial, Inc.  
2406 Reach Road  
Williamsport, PA 17701  
Phone: (570) 326-3806  
Fax: (800) 438-5901  
The Model G1004/G1008 is intended for home  
and medium-duty professional use. This mill fea-  
tures a 1,720 R.P.M., 112 HP capacitor-start  
motor and push button ON/OFF switch.  
The specifications, drawings, and photographs  
illustrated in this manual represent the Model  
G1004/G1008 as supplied when the manual was  
prepared. However, owing to Grizzly’s policy of  
continuous improvement, changes 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 particular tool  
or machine. Should you receive one, we urge you  
to insert the new information with the old and  
keep it for reference.  
We are also pleased to provide this manual with  
the Model G1004/G1008. It was written to guide  
you through assembly, review safety considera-  
tions, and cover general operating procedures. It  
represents our effort to produce the best docu-  
mentation possible. If you have any comments  
regarding this manual, please write to us at the  
address below:  
Grizzly Industrial, Inc.  
Technical Documentation  
P.O. Box 2069  
C
/O  
To operate this, or any power tool, safely  
and efficiently, it is essential to become as  
familiar with its characteristics as possible.  
The time you invest before you begin to use  
your Model G1004/G1008 will be time well  
spent. DO NOT operate this machine until  
you are completely familiar with the con-  
tents of this manual. Make sure you read  
and understand all of the safety proce-  
dures. If you do not understand something,  
DO NOT operate the machine.  
Bellingham, WA 98227-2069  
Like any complex milling machine, the  
Models G1004/1008 is an extremely power-  
ful tool and there are some inherent dan-  
gers which could result in serious personal  
injury. We strongly recommend that you DO  
NOT attempt to operate this machine with-  
out first reading this manual. We also high-  
ly recommend that you learn as much from  
books, magazines, classes and other  
sources of milling knowledge before you  
use this machine. Always consider safety  
first when using this or any other metal-  
working machinery.  
G1004/1008 Vertical Milling Machine  
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Unpacking  
Piece Inventory  
After all the parts have been removed from the  
crate, you should have:  
This Milling Machine is shipped from the manu-  
facturer in a carefully packed crate. If you discov-  
er the machine is damaged after you’ve signed  
for delivery, and the truck and driver are gone,  
you will need to file a freight claim with the carri-  
er. Save the containers and all packing materials  
for possible inspection by the carrier or its agent.  
Without the packing materials, filing a freight  
claim can be difficult. If you need assistance  
determining whether you need to file a freight  
claim, or with the procedure to file one, please  
contact our Customer Service.  
• Milling Machine  
• Tool Box  
-Fly Cutter  
-Oil Bottle  
-Screwdriver  
-Wheel Handles  
-Open End Wrench  
1
1
1
3
1
Other featured items will be already mounted to the  
machine. They include:  
-Flood Coolant Pump  
-Draw Bar  
-Fly Cutter Arbor  
-Powerfeed (G1008 only)  
-Light Fixture  
The G1004/G1008 is a heavy machine, 1,010  
lbs. shipping weight. DO NOT over-exert  
yourself while unpacking or moving your  
machine – you will need assistance. Serious  
personal injury may occur if safe moving  
methods are not followed. When moving,  
always insure that you have enough clear-  
ance in the path way you intend to take and  
that floor and stair structures are capable of  
supporting the combined weight of the  
machine and the people moving it.  
In the event that any non-proprietary 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.  
When you are completely satisfied with the con-  
dition of your shipment, you should inventory its  
parts.  
NOTICE  
A full parts list and breakdown can be found  
toward the end of this manual. For easier  
assembly, or to identify missing parts,  
please refer to the detailed illustrations.  
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Clean Up  
Site Considerations  
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. Avoid  
chlorine-based solvents as they may damage  
painted surfaces should they come in contact.  
Always follow the usage instructions on the prod-  
uct you choose for clean up.  
FLOOR LOAD  
Your G1004/G1008 Milling Machine represents a  
large weight load in a 28" x 20" footprint. Most  
commercial or garage shop floors should be suf-  
ficient to carry the weight. Before moving this  
milling machine onto a residential floor inspect it  
carefully to determine that it will be sufficient to  
carry the load. If you question the strength of your  
floor, you should consider having it inspected for  
possible reinforcement.  
Do not use gasoline or other petroleum-  
based solvents to remove this protective  
coating. These products generally have low  
flash points which makes them extremely  
flammable. A risk of explosion and burning  
exists if these products are used. Serious  
personal injury may occur.  
WORKING CLEARANCES  
Working clearances can be thought of as the dis-  
tances between machines and obstacles that  
allow safe operation of every machine without  
limitation. Consider existing and anticipated  
machine needs, size of material to be processed  
through each machine, and space for auxiliary  
stands and/or work tables. Also consider the rel-  
ative position of each machine to one another for  
efficient material handling. Be sure to allow your-  
self sufficient room to safely run your machines in  
any foreseeable operation.  
Many of the solvents commonly used to  
clean machinery can be highly flammable,  
and toxic when inhaled or ingested. Always  
work in well-ventilated areas far from  
potential ignition sources when dealing  
with solvents. Use care when disposing of  
waste rags and towels to be sure they do  
not create fire or environmental hazards.  
Keep children and animals safely away  
when cleaning and assembling this  
machine.  
LIGHTING AND OUTLETS  
Lighting should be bright enough to eliminate  
shadow and prevent eye strain. Electrical circuits  
should be dedicated or large enough to handle  
combined motor amp loads. Outlets should be  
located near each machine so power or exten-  
sion cords are not obstructing high-traffic areas.  
Be sure to observe local electrical codes for prop-  
er installation of new lighting, outlets, or circuits.  
All die-cut metal parts have a sharp edge  
(called “flashing”) on them after they are  
formed. This is generally removed at the  
factory. Sometimes a bit of flashing might  
escape inspection, and the sharp edge may  
cause cuts or lacerations when handled.  
Please examine the edges of all die-cut  
metal parts and file or sand the edge to  
remove the flashing before handling.  
Make your shop “child safe”. Ensure that  
your workplace is inaccessible to young-  
sters by closing and locking all entrances  
when you are away. Never allow visitors in  
your shop when assembling, adjusting or  
operating equipment.  
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SECTION 4: ASSEMBLY  
Beginning Assembly  
Mounting Handles  
Three handles are supplied with the  
G1004/G1008. They are black and have a slotted  
head screw through them. On the threaded por-  
tion is a nut. Tighten the nut so that the black han-  
dle does not spin. Screw the handles into the  
handwheels until they are tight. Loosen them one  
full turn. While maintaining the orientation of the  
slotted screw, turn the nut so that it now tightens  
against the handwheel.  
Assembly of the G1004/G1008 is straightforward.  
We have organized the assembly process into  
steps. Please follow them in sequence.  
ORDER OF ASSEMBLY  
A.  
B.  
C.  
D.  
E.  
Leveling  
Mounting Handles  
Install Collet or Arbor  
Fly Cutter  
Knee Hand Crank  
Tools Required: A complete set of metric Allen®  
wrenches will be necessary for most of the  
assembly and adjustments. A rubber mallet and a  
set of open ended, metric wrenches will also be  
needed.  
Collet or Arbor  
Installation  
Disconnect the power before changing col-  
lets or arbors on the G1004/G1008. Serious  
personal injury may occur.  
Leveling  
Before attempting to use your mill, make sure that  
it is sitting firmly in place and that the work table  
is level. Should you find that the machine rocks or  
is not level, use mild steel shim stock or leveling  
pads, such as those sold by Grizzly Industrial  
(G7159).  
The Models G1004/08 feature an R-8 spindle  
which accepts many industrial collets and arbors.  
To install a collet or an arbor:  
1. Release the latches on the head lid and  
open it.  
2. Determine the location of the pin inside the  
spindle.  
3. Align the keyway of the collet to the side  
where you found the pin and insert the col-  
let or cutting tool’s arbor up into the spindle  
housing. Rotate the collet slightly to line up  
the keyway with the pin in the spindle bore.  
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4. Turn the hex head at the top of the drawbar  
(located on the top, front of the head) clock-  
wise until the threads at the bottom of the  
drawbar mesh with the female threads in  
the top of the collet or arbor.  
Fly Cutter  
Your mill comes equipped with a fly cutter that fits  
on the 1" stub end of the R-8 arbor (this comes  
installed in the spindle).  
5. When using a collet: Insert the cutter in the  
hole at the bottom of the collet and contin-  
ue to tighten the drawbar until both the col-  
let and cutter are tightly in place. Do not  
over-tighten the collet. Grasp the rim of  
the front pulley. Hold it tight while tight-  
ening the draw bar.  
To install the fly cutter:  
1. Clean any accumulated grease, oil, or  
debris off of the R-8 arbor.  
2. Fit the fly cutter onto the stub end of the  
arbor so the keys on the arbor and the key-  
ways on the fly cutter come together.  
To remove a collet or an arbor:  
1. Loosen the hex head at the top of the draw-  
bar (2 or 3 turns).  
3. Secure the fly cutter to the arbor with the  
cap screw and washer provided. Tighten  
with an 8mm Allen® wrench.  
2. Tap on the top of the drawbar with a soft  
faced mallet to loosen the collet from the  
spindle. Hold the collet/cutter with a  
shop towel from the bottom to prevent it  
from dropping completely out of the  
machine.  
4. Install the arbor with fly cutter into the mill  
as described under the heading “Collet or  
Arbor Installation.”  
3. Continue to turn the drawbar counterclock-  
wise until it is free from the collet. Once  
loose, remove and replace with your  
desired collet. Remove cutting tools from  
spindle when not in use.  
Knee Crank Handle  
The Knee hand crank is located to the left of the  
Y-axis. It is shipped from the factory with the han-  
dle installed on the knee gear shaft backwards.  
To install properly begin by removing the exter-  
nal retaining ring on the end of the shaft. Slide  
the handle off of the shaft and re-install so that  
the handle faces outward.  
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SECTION 5: OPERATIONS  
Test Run  
DO NOT attempt to investigate or adjust the  
machine while it is running. Wait until the  
machine is turned off, unplugged and all  
working parts have come to a rest before  
you do anything! Serious personal injury  
could occur.  
Turn on the power supply at the main panel.  
Press the START button. Make sure that your  
finger is poised on the STOP button, just in  
case there’s a problem. The mill should run  
smoothly, with little or no vibration or rubbing  
noises. Strange or unnatural noises should be  
investigated and corrected before operating the  
machine further.  
Speed Changes  
If noises occur that can not be found by visual  
inspection, feel free to contact our service depart-  
ment for help.  
The motor is mounted on a plate hinged to the  
column. The motor assembly can be released by  
turning the handle at the side of the motor. Once  
the motor tension is released, the belts can be  
easily re-positioned to change speeds. See the  
speed chart below for belt settings. A speed chart  
is also located inside the pulley cover.  
BELT POSITIONING CHART  
This diagram shows belts positioned at A and II. As  
the chart shows, these positions will yield 1720 RPM.  
-13-  
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SECTION 6: ADJUSTMENTS  
3. Loosen the setscrew on the knurled surface  
Graduated Dials  
of the handwheel dial. Turn the dial until the  
“0” lines up with the index line. Tighten the  
setscrew.  
The graduated dials on the handwheels for the  
table and fine feed can be indexed or “zeroed” to  
help make accurate and convenient movements.  
Each dial can be reset or locked with the  
setscrew or thumb screw provided.  
4. Turn the handwheel according to the dis-  
tance you want to move downward. Each  
complete revolution equals 0.100".  
Locking:  
Example:  
For milling operations, the spindle height  
can be locked in by tightening the black  
lever on the forward, right hand portion of  
the head.  
Suppose you want to drill a series of holes  
in a workpiece at 0.625" centers. After  
locating the first hole’s placement and  
drilling, you can set the dial of the appropri-  
ate axis to zero and move the table 0.625".  
Drill the next hole and proceed as above.  
Depth Stop  
Spindle Height  
To calibrate the depth stop:  
1. Roll the quill down using the lever handle  
until you reach the desired depth shown on  
the scale. Lock the quill with the lever lock  
handle. Turn the depth stop nut until it  
meets the bottom of the depth stop block.  
Tighten the jam nut against the bottom of  
the stop nut.  
You have two options for spindle height adjust-  
ment: a drill press style, levered downfeed and a  
micro adjustment handwheel. The lever is located  
on the right, forward portion of the head. The  
micro adjustment handwheel is to the left.  
To operate the feed lever:  
2. Roll the spindle up into the head. Place a  
piece of paper on the workpiece. Loosen  
the knee lock handle and raise the knee  
until the drill bit or cutter just touches the  
paper. Tighten the knee lock.  
Pull the lever toward you. The spindle will go  
down until you stop pulling or until it hits the depth  
stop.  
To operate the micro-adjustment handwheel:  
3. Begin drilling or milling. Note for precision  
1. Tighten the knurled locking knob located on  
the left side of the headstock and just  
behind the fine downfeed handwheel.  
depth: set the depth stop shallow of the  
1
desired depth by 16''. Drill the hole and  
measure. Finish to depth using the fine  
downfeed handwheel with its graduated  
dial and use the procedure laid out in the  
section above titled: Graduated Dials.  
2. Locking out the levered downfeed will  
transfer control to the handwheel. The  
handwheel will not function if the knurled  
locking knob is loose.  
G1004/1008 Vertical Milling Machine  
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SECTION 7: MAINTENANCE  
Lubrication  
General  
Your Model G1004/G1008 milling machine  
requires very little maintenance. A thorough  
cleaning, now and again, will increase the  
machine’s durability and efficiency by removing  
chips and grime that can gum up moving parts.  
Spindle: Add oil to the oil cup after every 4 hours  
of use. The cup is located on the right portion of  
the milling head just under the belt guard. SAE 20  
oil is recommended.  
One Shot Lubricator: Located on the left side of  
the knee. Check periodically and fill oil reservoir  
as necessary with SAE 20. This lubricator will  
supply oil to the knee, apron and table slides. By  
pulling the lever you will apply enough oil for a 4  
hour period of use.  
An occasional application of a protective spray  
coating will keep the table and other bare metal  
parts from rusting and pitting.  
REMEMBER: When performing maintenance or  
repairs on shop equipment, always disconnect  
the machine from its power supply.  
Flood Coolant System: For best results it is rec-  
ommended that a water soluble oil be used.  
Replace coolant when it becomes noticeably con-  
taminated or rancid. Take the time to clean the  
sludge from the bottom of the tank annually.  
Access to the tank may be made from the right or  
left panels on the stand/base.  
Bearings  
Table and Apron Lead Screws: Lubricate every  
day with SAE 20 oil. A few drops applied on each  
side of each nut.  
Most of the bearings are factory-sealed. A sealed  
bearing requires no lubrication during its lifetime.  
Should a bearing fail, your mill will probably  
develop a noticeable rumble, which will increase  
when the machine is put under load. If allowed to  
get worse, overheating of the journal containing  
the bad bearing could occur. If the bad bearing is  
not replaced, it will eventually seize – possibly  
doing damage to other parts of the machine.  
Bearings are standard sizes and can be replaced  
through Grizzly.  
Lead Screw Bearings: Lubricate the bearings  
located at the ends of the table and just in front of  
the Y axis hand crank. You will find oil ports with  
a ball stopper. Lubricate daily. Apply small  
amount of SAE 20 using an oil can with a pointed  
nozzle to help push in the ball.  
Quill bearings are under a lot of pressure (pre-  
loading). If not maintained properly, they will wear  
out prematurely. You will need to partially dis-  
mantle the machine once a year to repack the  
bearings. Please call the service department for  
instructions about repacking your quill bearings.  
Gibs  
The G1004/1008 milling machine table features  
tapered gibs in the dovetail ways. To tighten the  
table, loosen the screw at the small end of the  
tapered gib and tighten the screw at the large  
end. Use the same procedure for the saddle and  
knee gib adjustments.  
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G1004/1008 Vertical Milling Machine  
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SECTION 8: CLOSURE  
We recommend you keep a copy of our current  
Commentary  
The following pages contain parts diagram, parts  
list and Warranty/Return information for your  
Model G1004/1008 mill.  
catalog for complete information regarding  
Grizzly's warranty and return policy. If you need  
additional technical information relating to this  
machine, or if you need general assistance or  
replacement parts, please contact the appropri-  
ate regional Service Department listed in the  
introduction.  
If you need parts or help in assembling your  
machine, or if you need operational information,  
we encourage you to call our Service  
Department. Our trained service technicians will  
be glad to help you.  
Additional information sources are necessary to  
realize the full potential of this machine. Trade  
journals, metalworking magazines, and the  
shelves of your local library are good places to  
start. Knowledge and caution are vital compo-  
nents of successful milling machine operation.  
If you have comments dealing specifically with  
this manual, please write to our Bellingham,  
Washington location using the address in Section  
3 Introduction. The specifications, drawings, and  
photographs illustrated in this manual represent  
the Model G1004/G1008 as supplied when the  
manual was prepared. However, due to Grizzly’s  
policy of continuous improvement, changes 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 particular tool  
or machine. Should you receive one, add the new  
information to this manual and keep it for refer-  
ence.  
The Model G1004/G1008 was specifically  
designed for metal machining. DO NOT MODI-  
FY AND/OR USE THIS MACHINE FOR ANY  
OTHER PURPOSE. Modifications or improp-  
er 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. Serious person-  
al injury may occur.  
We have included some important safety meas-  
ures that are essential to this machine’s opera-  
tion. While most safety measures are generally  
universal, Grizzly reminds you that each work-  
shop is different and safety rules should be con-  
sidered as they apply to your specific situation.  
As with all powerful industrial machinery,  
there is the potential for danger when using  
the Model G1004/1008 Vertical Milling  
Machine. Use this tool with respect and cau-  
tion to lessen the possibility of operator  
injury or mechanical damage. If normal  
safety precautions are overlooked or  
ignored, serious injury to the operator or  
others in the area is possible.  
Operating this equipment has the potential  
for flying debris to cause eye injury. Always  
wear safety glasses or goggles when oper-  
ating equipment. Everyday glasses or read-  
ing glasses only have impact resistant  
lenses, they are not safety glasses. Be cer-  
tain the safety glasses you wear meet the  
appropriate standards of the American  
National Standards Institute (ANSI).  
G1004/1008 Vertical Milling Machine  
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WARRANTY AND 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 par-  
ticular 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, spe-  
cial, or consequential damages arising from the use of our products.  
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 without this number. Proof of purchase must accompany the mer-  
chandise.  
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.  
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.  
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G1004/1008 Vertical Milling Machine  
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