MODEL H8218
1
/
4" MINI DIE GRINDER
INSTRUCTION MANUAL
COPYRIGHT ©AUGUST, 2007 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.
#JM9741 PRINTED IN CHINA
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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 substitute 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 avoided, COULD result in death or serious injury.
Indicates a potentially hazardous situation which, if
not avoided, MAY result in minor or moderate injury.
It may also be used to alert against unsafe practices.
This symbol is used to alert the user to useful
NOTICE
information about proper operation of the equipment.
Safety Instructions For Pneumatic Tools
1. READ THIS MANUAL. This tool may
cause personal injury if used incor-
rectly. This manual contains proper
safety and operating instructions that
must be followed to reduce this risk.
2. WEAR EYE PROTECTION. This
tool may throw small fragments dur-
ing operation, which may cause seri-
ous eye injury. Always wear ANSI
approved safety glasses or face shield
to reduce your risk from this hazard.
3. WEAR A RESPIRATOR. This tool
may produce fine dust during oper-
ation, which can cause respiratory
injury if inhaled. Always wear a respi-
rator NIOSH approved for the type of
material being processed.
4. WEAR HEARING PROTECTION.
Operating this tool for prolonged time
periods may damage your hearing.
Your risk depends on length and fre-
quency of use. To reduce your risk of
this hazard, wear hearing protection.
5. MAINTAIN SAFETY GUARDS. Your
tool may be equipped with safety
guards or other structural compo-
nents designed to reduce the risk of
injury during operation. Never modify
or operate this tool with any guards or
components removed or damaged.
6. KEEP CHILDREN AWAY. Prevent
children from injury by keeping them
away from this tool. Disconnect and
lock the tool away when not in use.
Model H8218 Mini Die Grinder
-1-
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7. AVOID ENTANGLEMENTS. Do not
wear loose clothing, gloves, neck-
ties, rings, bracelets, or other jewel-
ry, which may get caught in moving
parts, when operating this tool. Wear
a protective hair covering to contain
long hair.
8. USE CORRECT AIR PRESSURE.
Exceeding the maximum PSI rating
of this tool may cause unpredictable
operation or bursting.
9. DISCONNECT AIR PRESSURE
before servicing, changing accesso-
ries, or moving to another location.
Never leave this tool unattended
when connected to air.
10. SECURE TOOLING. Always verify
tooling is secure before operation.
11. SHARP SURFACES. DO NOT
place hands near the tooling sur-
faces when in operation.
12. REMOVE ADJUSTING KEYS AND
WRENCHES AFTER USE. These
tools become dangerous projectiles
if left on the tool when it is started.
13. AVOID FLAMMABLES. Do not use
this tool around any flammables that
may be ignited by sparks.
14. SECURE WORK. Use clamps or a
vise to hold work when practical. It is
safer than using your hand and frees
both hands to operate tool.
15. MAINTAIN TOOLS WITH CARE.
Keep tools lubricated and clean
for best and safest performance.
Follow instructions for lubricating
and changing accessories.
16. DO NOT FORCE TOOL. It will do
the job better and safer at the rate
for which it was designed.
17. CHECK FOR DAMAGED PARTS
BEFORE USING. Check for bind-
ing and alignment of parts, broken
parts, part mounting, loose bolts,
and any other conditions that may
affect operation. Repair or replace
damaged parts before operating.
18. USE GOOD LIGHTING. Keep work
area well lighted. Dark work areas
increase risk of accidental injury.
19. AVOID
UNINTENTIONAL
OPERATION. Always disconnect air
when not in use, and do not carry
tool with hand on trigger.
20. USE
THE
RECOMMENDED
ACCESSORIES. Consult owner’s
manual for recommended acces-
sories. Using improper accessories
may increase the risk of injury.
21. NEVER ALLOW UNTRAINED
USERS TO USE THIS TOOL WHILE
UNSUPERVISED.
22. IF YOU ARE UNSURE OF THE
INTENDED OPERATION, STOP
USING TOOL. Seek formal training
or research books or magazines that
specialize in pneumatic tools.
23. BE AWARE OF HOSE LOCATION.
Hoses can easily become a tripping
hazard when laid across the floor in
a disorganized fashion.
24. DO NOT USE UNDER THE
INFLUENCE OF DRUGS OR
ALCOHOL, OR WHEN TIRED.
-2-
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INTRODUCTION
Foreword
Specifications
The
specifications,
details,
and
Collet Size...............................................1⁄4
"
photographs in this manual represent
the Model H8218 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.
No Load Speed.......................25,000 RPM
Air Consumption...............................3 CFM
Air Inlet.....................................................1⁄4
"
Required PSI.....................................90 PSI
Maximum Sound Level......................95 dB
If you have any comments regarding this
manual, please write to us at the following
address:
A
D
Grizzly Industrial, Inc.
C/O Technical Documentation
P.O. Box 2069
C
B
Bellingham, WA 98227-2069
E-Mail: [email protected]
Figure 1. Model H8218 Inventory.
Most importantly, we stand behind our
tools. If you have any service questions or
parts requests, please call or write us at
the location listed below.
1
A.
B.
/
/
4" Mini Die Grinder
4" NPT Male Quick Connect Fitting
1
C. 12mm Wrench
D. 17mm Wrench
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail: [email protected]
Nolistofsafetyguidelinesiscomplete,
because every work environment is
different. Always consider safety first
and use common sense. Failure to
use this tool with caution and respect
could result in serious personal
injury.
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OPERATIONS
To install a bit:
1. DISCONNECT THE GRINDER FROM
THE AIR SUPPLY!
2. Use the two included wrenches to loos-
en the collet nut, as shown in Figure
2.
Note: It is not necessary to com-
pletely remove the collet nut from the
shaft unless you are also changing the
collet.
Read the manual before operation.
Become familiar with this tool, its
safety instructions, and its operation
before beginning any work. Serious
personal injury may result if safety
or operational information is not
understood or followed.
Installing Bits
The Model H8218 uses bits and cutters
1
with a /4" diameter shaft. See the Grizzly
listing of available bits and accessories.
Figure 2. Loosening the collet.
1
3. Insert at least
⁄2" of the bit into the
collet.
DO NOT use bits or cutters with
a cutting diameter larger than 1".
The bit or cutter could break apart
under the stresses of high speed use
causing serious personal injury.
4. Hand tighten the collet nut, then use
the collet wrenches to tighten the collet
nut. Verify that the tooling bit is secure
and will not pull out.
Like all tools there is potential danger
when operating this tool. Accidents
are frequently caused by lack of
familiarity or failure to pay attention.
If normal safety precautions are
overlooked or ignored, serious
personal injury may occur.
-4-
Model H8218 Mini Die Grinder
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EYE INJURY
HAZARD!
Wear protective
equipment when
using this tool.
LUNG/EAR
INJURY HAZARD!
Wear protective
equipment when
using this tool.
ACCIDENTAL
START HAZARD!
Disconnect before
service or tool
changes.
Using the Grinder
Always test the tooling bit on a scrap piece
of material similar to the workpiece. Trial
and error is the best way to determine the
ideal setup.
AIR PRESSURE
HAZARD!
Never exceed max
PSI rating for tool.
To use the grinder:
1. Attach the 1/4" NPT male quick connect
fitting to the air inlet plug.
Daily Maintenance
2. Attach the grinder to an air supply set
The die grinder MUST have 2-6 drops of oil
directdpeihar ting before
each use. In addition, we recommend using
an in-line filter, lubricator, and regulator, as
shown in Figure 3.
at 90 PSI.
3. Hold the grinder securely.
4. Turn the grinder ON by depressing the
trigger.
These procedures should be done after
each use:
5. Securely holding the grinder, ease the
working end of the bit against the
workpiece with a light, but steady, pres-
sure.
•
Wipe the motor housing and tool bits
with a dry cloth, or blow off the dust and
debris with compressed air.
6. To turn the grinder OFF, release the
•
Check for damage to tooling, hoses,
housing or other accessories.
trigger.
7. To avoid accidental starting, discon-
nect the grinder from the air supply
when it is not in use.
Quick
Connector
Quick
Connector
Lubricator
Regulator
Your
Tool
Air
Compressor
Quick
Coupler
Quick
Coupler
Air Hose
Filter
Figure 3. Installed filter lubricator
regulator.
Model H8218 Mini Die Grinder
-5-
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PARTS LIST
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REF PART #
DESCRIPTION
REF PART #
PH8218020 END PLATE
PH8218021 PIN 2 X 6
DESCRIPTION
1
PH8218001 HOUSING
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
2
PH8218002 VALVE STEM SEAT
PH8218003 TRIGGER
3
PH8218022 ROTOR
4
PH8218004 TRIGGER THROTTLE
PH8218005 TORSION SPRING
PH8218006 TRIGGER RING
PH8218023 ROTOR BLADE
PH8218024 CYLINDER
PH8218025 SPECIAL WASHER
PH8218026 BUSHING
5
6
7
PRP64M
PRP16M
POR5004
POR0004
ROLL PIN 3 X 18
ROLL PIN 3 X 25
O-RING 3.5 X 1.5
O-RING 4 X 2
8
PH8218027 FRONT PLATE
9
PRP54M
P608
ROLL PIN 1.5 X 4
10
11
12
13
14
15
16
17
18
19
BALL BEARING 608Z
PH8218011 VALVE STEM
PH8218030 CHUCK SEAT
PH8218031 LOCK RING
PH8218012 COMPRESSION SPRING
PH8218013 AIR REGULATOR
PH8218014 O-RING 7 X 2
PH8218032 PROTECTING RUBBER
PH8218033 COLLET
PORP011-2 O-RING 11 X 2.4
PH8218016 SCREW CAP
PH8218034 COLLET NUT
PH8218035 12MM WRENCH
PH8218036 17MM WRENCH
PH8218037 O-RING KIT
PH8218017 MUFFLE COVER
PH8218018 AIR INLET PLUG
P625
BALL BEARING 625Z
PH8218038 1/4" NPT MALE AIR FITTING
-6-
Model H8218 Mini Die Grinder
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