Grizzly H6155 User manual

COPYRIGHT © JULY, 2004 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.
#EW6394 PRINTED IN CHINA
ROTARY MINI GRINDER
WITH FLEX SHAFT
MODEL H6155
INSTRUCTION MANUAL

WARNING
Some dust created by power sanding, sawing, grind-
ing, drilling, and other construction activities contains
chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm.
Some examples of these chemicals are:
• Lead from lead-based paints.
• Crystalline silica from bricks, cement, and other
masonry products.
• Arsenic and chromium from chemically treated lum
ber.
Your risk from these exposures varies, depending on
how often you do this type of work. To reduce your
exposure to these chemicals: work in a well ventilated
area, and work with approved safety equipment, such
as those dust masks that are specially designed to
filter out microscopic particles.

-1-
For Your Own Safety Read Instruction Manual
Before Operating This Equipment
The purpose of safety symbols is to attract your attention to possible hazard-
ous conditions. This manual uses a series of symbols and signal words which
are intended to convey the level of importance of the safety messages. The
progression of symbols is described below. Remember that safety messages by
themselves do not eliminate danger and are not a substitute for proper accident
prevention measures.
Indicates a potentially hazardous situation which, if
not avoided, MAY result in minor or moderate injury.
It may also be used to alert against unsafe practices.
Indicates a potentially hazardous situation which, if
not avoided, COULD result in death or serious injury.
Indicates an imminently hazardous situation which, if
not avoided, WILL result in death or serious injury.
This symbol is used to alert the user to useful infor-
mation about proper operation of the equipment.
NOTICE
SAFETY
Safety Instructions For Power Tools
5. KEEP CHILDREN AND VISITORS
AWAY. All children and visitors
should be kept at a safe distance
from work area.
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.
8. USE RIGHT TOOL. Don’t force tool
or attachment to do a job for which
it was not designed.
1. KEEP ALL SAFETY DEVICES IN
PLACE and in working order.
2. REMOVE ADJUSTING KEYS AND
WRENCHES. Form habit of check-
ing to see that keys and adjusting
wrenches are removed from tool
before turning on.
3. KEEP WORK AREA CLEAN.
Cluttered areas and benches invite
accidents.
4. DON’T USE IN DANGEROUS
ENVIRONMENT. Don’t use power
tools in damp or wet locations, or
where any flammable or noxious
fumes may exist. Keep work area
well lighted.
Model H6155 Rotary Mini Grinder

Model H6155 Rotary Mini Grinder-2-
9. USE PROPER EXTENSION CORD
for the tool. Make sure your exten-
sion cord is in good condition. Con-
ductor size should be in accordance
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 over-
heating. Your extension cord must
also contain a ground wire and plug
pin. Always repair or replace exten-
sion cords if they become dam-
aged.
Minimum Gauge for Extension Cords
10. WEAR PROPER APPAREL. Do not
wear loose clothing, gloves, neck-
ties, rings, bracelets, or other jew-
elry which may get caught in moving
parts. Non-slip footwear is recom-
mended. Wear protective hair cover-
ing to contain long hair.
11. ALWAYS USE SAFETY GLASS-
ES. Everyday eyeglasses only have
impact resistant lenses, they are
NOT safety glasses.
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.
Safety Instructions For Power Tools
AMP LENGTH
RATING 25ft 50ft 100ft
0-6 18 16 16
7-10 18 16 14
11-12 16 16 14
13-16 14 12 12
17-20 12 12 10
21-30 10 10 No
13. DON’T OVERREACH. Keep
proper footing and balance at all
times.
14. MAINTAIN TOOLS WITH CARE.
Keep tools sharp and clean for
best and safest performance. Fol-
low instructions for lubricating and
changing accessories.
15. DISCONNECT TOOLS before
servicing and changing accesso-
ries, such as blades, bits, cutters,
and the like.
16. REDUCE THE RISK OF UNIN-
TENTIONAL STARTING. Make
sure switch is in off position before
plugging in.
17. USE RECOMMENDED ACCES-
SORIES. Consult the owner’s
manual for recommended acces-
sories. The use of improper acces-
sories may cause risk of injury.
18. CHECK DAMAGED PARTS.
Before further use of the tool, a
guard or other part that is dam-
aged should be carefully checked
to determine that it will operate
properly and perform its intended
function. Check for alignment of
moving parts, binding of moving
parts, breakage of parts, mount-
ing, and any other conditions that
may affect its operation. A guard or
other part that is damaged should
be properly repaired or replaced.

Model H6155 Rotary Mini Grinder -3-
Operating this mini grinder can propel
objects into the air, causing immedi-
ate eye damage. To protect your-
self, always wear American National
Standards Institute (ANSI) approved
safety glasses or goggles when oper-
ating this equipment.
No list of safety guidelines can be
complete. Every shop environment
is different. Always consider safety
first, as it applies to your individual
working conditions. Use this and
other machinery with caution and
respect. Failure to do so could result
in serious personal injury, damage
to equipment or poor work results.
1. READ THIS MANUAL. This man-
ual contains proper operating
instructions for this machine.
2. DO NOT jam the grinder against
the workpiece. Firmly grasp the
grinder and ease it against the
workpiece using light pressure.
3. DO NOT wear loose clothing while
operating this machine. Roll up or
button sleeves at the cuff.
4. DO NOT place hands near, or in
contact with, mini grinder during
operation.
5. GRIP THE WORKPIECE FIRMLY.
6. NEVER leave the machine running
unattended.
Additional Safety Instructions For
Rotary Mini Grinders
7. REPLACE grinding disks or sand-
ing sleeves when worn.
8. NEVER work on more than one
item at a time.
9. ALWAYS disconnect the machine
from the power source before
changing grinding disks, sanding
sleeves, or tool bits
10. ALWAYS test run the machine
before starting any work.
11. DO NOT use the flex shaft with a
tight bend. This may cause binding
and damage the inner spindle.
12. CLAMP THE WORKPIECE. DO
NOT hold the workpiece with one
hand and operate the mini grinder
with the other.

Model H6155 Rotary Mini Grinder-4--4-
INTRODUCTION
If you have any comments regarding this
manual, please write to us at the following
address:
Grizzly Industrial, Inc.
C/O Technical Documentation
P.O. Box 2069
Bellingham, WA 98227-2069
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.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Web Site: http://www.grizzly.com
We are proud to offer the Grizzly Model
H6155 Rotary Mini Grinder with Flexible
Tool Shaft. This model is part of a growing
Grizzly family of fine power tools. When
used according to the guidelines set forth
in this manual, you can expect years of
trouble-free, enjoyable operation and proof
of Grizzly’s commitment to customer sat-
isfaction.
The Model H6155 features an 8,000–
35,000 RPM variable speed with an assort-
ment of buffs, sanding disks and drums,
grinding stones, and drill bits. All of the
accessory tools fit in the 1/8" collet in the
mini grinder, or in the flexible shaft. Also
included is a tool post, a router base, and
a flashlight base.
It is our pleasure to provide this manual
with the Model H6155. It was written
to encourage safety considerations and
guide you through general operating pro-
cedures and maintenance. This manual
represents our effort to produce the best
documentation possible.
The specifications, details, and photo-
graphs in this manual represent the Model
H6155 as supplied when the manual was
prepared. However, owing to Grizzly’s pol-
icy of continuous improvement, changes
may be made at any time with no obliga-
tion on the part of Grizzly.
Read the manual before operation.
Become familiar with this machine, its
safety instructions, and its operation
before beginning any work. Serious
personal injury may result if safety or
operational information is not under-
stood or followed.
Foreword Contact Info

Model H6155 Rotary Mini Grinder -5--5-
INVENTORY
Figure 1. Model H6155 features and controls.
The set up and operation instructions will be easier to understand if you are familiar with the
components of the Model H6155 Rotary Mini Grinder. Match up the feature list below with
the letters in Figure 1 to identify the feature locations.
A. Tool Case
B. Telescoping Tool Holder
C. Clamp Base
D. 42" Flexible Shaft
E. Rotary Mini Grinder
AB
C
D
F
E
G
H
I
F. Tool Assortment
G. Flashlight Base
H. Router Base
ISanding Drum/Disk Assortment

Model H6155 Rotary Mini Grinder-6-
OPERATIONS
Using The Grinder
The Model H6155 is best suited for high
RPM, low torque applications. Most opera-
tions performed with the grinder will per-
form best at higher RPM settings; how-
ever, slower RPM settings are ideal when
working with plastics that melt easily.
Always test the bit and RPM combination
on a scrap piece of material similar to the
workpiece. Trial and error is the best way
to determine the ideal setup.
To use the grinder:
1. Grasp the grinder with a secure grip.
2. Turn the power switch to the ON “O”
position.
3. Adjust the speed lever to change the
RPM.
4. Firmly grasp the grinder and ease it
against the workpiece using light pres-
sure.
Failure to wear safety glasses while
operating the grinder could cause
serious personal eye injury.
Installing Bits
The Model H6155 uses bits and cutters
with a 1⁄8" diameter shaft. See the Grizzly
catalog or website for a complete listing of
available bits and accessories.
To install a bit:
1. Unplug the tool from the power
source!
2. Depress the collet lock shown in Figure
2 and loosen the collet nut. The collet
lock will engage during rotation, pre-
venting further rotation of the collet nut.
DO NOT completely remove the collet
nut from the shaft.
DO NOT use bits or cutters with a
cutting surface larger than 1". The
bit could break apart under the
stresses of high speed use caus-
ing serious personal injury.
3. Insert the end of a bit into the collet.
At least 1⁄2" of the bit shaft should be
mounted into the end of the collet.
4. Rotate the collet nut while depressing
the collet lock to secure the bit. Only
tighten 1/3 of a turn with the collet
wrench.
Figure 2. Collet lock
Collet Lock

Model H6155 Rotary Mini Grinder -7-
Use low RPM settings when work-
ing with plastics or other materi-
als with low melting points. Melted
plastics can liquefy, be thrown into
the air, and stick to the operator,
causing serious personal injury.
High RPM Uses
High RPM's are best for general carving,
cutting, routing, and grinding. The grinder
removes material quicker at higher RPM's.
Low RPM Uses
Low RPM's are best for grinding and cut-
ting materials that have low melting points.
Plastics in particular often melt from the
heat generated by high speed bits. Low
RPM's are also best for polishing and buff-
ing with the felt accessories included.
Installing the Flex Shaft
The flex shaft allows the user to get into
tight spaces and is easier to control; more
like a pencil. DO NOT operate the flex
shaft with sharp bends.
To install the flex shaft:
1. Unplug the tool from power!
2. Loosen the collet nut, and remove the
collet shield as shown in Figure 3.
3. Slide the inner spindle (Figure 3) par-
tially out of the flex shaft.
4. Insert the inner spindle into the collet
and tighten.
5. Slide the flex shaft up the inner spindle
and thread it onto the mini grinder in
place of the collet shield.
6. Insert a tool bit into the collet of the flex
shaft.
7. Insert the shaft of a tool bit into the
hole shown in Figure 4 and tighten the
collet. Note: Hold the flex shaft firmly
when starting the rotary mini grinder.
Figure 3. Flex shaft components.
Figure 4. Tightening the flex shaft collet.
Installing the Flashlight Base
The flashlight base will give you the extra
light that you need in low light situations.
To install the flashlight base:
1. Unplug the tool from power!
2. Remove the collet shield.
3. Screw the flashlight base onto the mini
grinder in place of the collet shield.
4. Turn the flashlight base ON/OFF with
the small switch on the face of the
flashlight base.
Inner Spindle
Tool Bit Shaft

Model H6155 Rotary Mini Grinder-8-
Installing the Router Base
The router base transforms the mini grind-
er into a mini router. It can be used with
Grizzly's mini router bits to round over
corners or apply profiles to the edges of
your workpiece. It can also be used with
the included tool bits to mill grooves, or
drill holes to consistent depths.
To install the flashlight base:
1. Unplug the tool from power!
2. Remove the collet shield.
3. Install the desired tool bit.
4. Screw the router base onto the mini
grinder in place of the collet shield.
5. Adjust the height of the router base by
loosening the screw shown in Figure
5, and sliding the router base to the
desired height. Tighten the screw in the
side of the router base.
Figure 5. Router base.
Using the Tool Holder
Use the tool holder to hold the mini grinder
when using the flex shaft.
To use the tool holder:
1. Slide the threaded base of the tool
holder into the hole in the clamp base.
2. Thread the nut onto the base of the tool
holder, then rotate the tool holder until
it is firmly attached to the clamp base.
3. Clamp the base to a table or other
sturdy object. Make sure the base can-
not rotate loose.
4. Extend the tool holder by rotating the
shaft to loosen the joints, and then
extending each section.
5. Rotate the shaft in the opposite direc-
tion to tighten it at the right height.
6. Fold out the hanger on the mini grinder
and hang it from the hook.