Grizzly H6155 User Manual

ROTARY MINI GRINDER

WITH FLEX SHAFT

MODEL H6155

INSTRUCTION MANUAL

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

COPYRIGHT © JULY, 2004 BY GRIZZLY INDUSTRIAL, INC.

#EW6394 PRINTED IN CHINA

WARNING

Some dust created by power sanding, sawing, grind­ing, 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
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.

other

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.

NOTICE

This symbol is used to alert the user to useful infor­mation about proper operation of the equipment.

Safety Instructions For Power Tools

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 ARE A 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

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-

Safety Instructions For Power Tools

9. USE PROPER EXTENSION CORD

for the tool. Make sure your exten­sion cord is in good condition. Con­ductor 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 over­heating. Your extension cord must
also contain a ground wire and plug
pin. Always repair or replace exten­sion cords if they become dam­aged.

Minimum Gauge for Extension Cords

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

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 cover­ing to contain long hair.

11. ALWAYS USE SAFETY GLASS­ES. 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.

13. D ON ’T OV ERREACH . Keep
proper footing and balance at all
times.

14. MAINTAIN TOOLS WITH CARE.

Keep tools sharp and clean for
best and safest performance. Fol­low instructions for lubricating and
changing accessories.

15. DISCONNECT TOOLS before
servicing and changing accesso­ries, such as blades, bits, cutters,
and the like.

16. REDUCE THE RISK OF UNIN­TENTIONAL STARTING. Make

sure switch is in off position before
plugging in.

17. USE RECOMMENDED ACCES­SORIES. Consult the owner’s

manual for recommended acces­sories. The use of improper acces­sories may cause risk of injury.

18. CHECK DAMAGED PARTS.
Before further 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, binding 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.

Model H6155 Rotary Mini Grinder-2-

Additional Safety Instructions For

Rotary Mini Grinders

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.

7. REPLACE grinding disks or sand­ing 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.

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
Operating this mini grinder can propel
objects into the air, causing immedi­ate eye damage. To protect your­self, always wear American National
Standards Institute (ANSI) approved
safety glasses or goggles when oper­ating this equipment.

Model H6155 Rotary Mini Grinder -3-

in serious personal injury, damage

to equipment or poor work results.

INTRODUCTION

Foreword Contact Info

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 sat­isfaction.

The Model H6155 features an 8,000–
35,000 RPM variable speed with an assort­ment 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 pro­cedures and maintenance. This manual
represents our effort to produce the best
documentation possible.

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: [e-mail]
Web Site: http://www.grizzly.com

The specifications, details, and photo­graphs in this manual represent the Model
H6155 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.

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 under­stood or followed.

Model H6155 Rotary Mini Grinder-4--4-

INVENTORY

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.

I

H

A.

Tool Case

B.

Telescoping Tool Holder

C.

Clamp Base

D.

42" Flexible Shaft

E.

Rotary Mini Grinder

A

D

E

G

Figure 1. Model H6155 features and controls.

F.

Tool Assortment

G.

Flashlight Base

H.

Router Base

I

Sanding Drum/Disk Assortment

B

C

F

Model H6155 Rotary Mini Grinder -5--5-

OPERATIONS

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.

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.

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, pre­venting further rotation of the collet nut.

DO NOT completely remove the collet
nut from the shaft.

-

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.

Failure to wear safety glasses while
operating the grinder could cause
serious personal eye injury.

Using The Grinder

The Model H6155 is best suited for high
RPM, low torque applications. Most opera­tions performed with the grinder will per­form best at higher RPM settings; how­ever, 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:

Collet Lock

Figure 2. Collet lock

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 pres­sure.

Model H6155 Rotary Mini Grinder-6-

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 cut­ting 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 buff­ing with the felt accessories included.

Use low RPM settings when work­ing 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.

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.

3. Slide the inner spindle (Figure 3) par­tially 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.

Tool Bit Shaft

To install the flex shaft:

1. Unplug the tool from power!

Figure 4. Tightening the flex shaft collet.

Installing the Flashlight Base

2. Loosen the collet nut, and remove the

collet shield as shown in Figure 3.

Inner Spindle

Figure 3. Flex shaft components.

Model H6155 Rotary Mini Grinder -7-

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.

Installing the Router Base

The router base transforms the mini grind­er 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.

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.

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.

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 can­not 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 direc­tion to tighten it at the right height.

6. Fold out the hanger on the mini grinder
and hang it from the hook.

Figure 5. Router base.

Model H6155 Rotary Mini Grinder-8-

MAINTENANCE

Daily Maintenance

These items should be done after each
use.

1. Wipe the motor housing, flex shaft,
and tool bits with a dry cloth or blow
off dust and debris with compressed
air.

2. Check for damage to bits, cords, or
the housing.

Lubrication

The flex shaft needs to be lubricated with
a light lithium lubricant or machine oil after
25-30 hours of use.

1. Remove the inner spindle

2. Wipe a thin film of lubricant on the inner

spindle. Note: Too much lubricant can
become messy and possibly get on
your workpiece. Do not use automo-

tive grease because it is too thick.

3. Re-install the inner spindle into the flex
shaft.

Carbon Brush Replacement

Carbon brush life is 500–2000 hours,
depending on the type of use. Always
replace both brushes at the same time.

To replace the carbon brushes:

1. Use a small screwdriver to remove

the caps shown in Figure 6 from
the sides of the motor housing. Be
careful when removing the caps, as
the brushes may spring out. Gently
remove the brush using the tip of the
screwdriver if it does not spring out.

Figure 6. Brush installation.

2. Examine the brush surface for pit-

ting or cracking. If the brush is

damaged or is less than an 1/8" long,

replace with a replacement brush from
Grizzly Industrial, Inc.

3. If the brush is not broken and is dirty,
gently rub with a pencil eraser until all
of the dirt has been removed. Remove
all eraser dust so it will not interfere
with the machine.

4. Install the brushes and cap. Run the
mini grinder for 5 minutes to seat
the brushes before using it on a

Model H6155 Rotary Mini Grinder -9-

workpiece.

H6155 Rotary Mini Grinder Parts Breakdown

21

21

4

12

20

5

6

9

15

16

13

19

14

17

18

8

11

3

1

2

7

10

REF PART # DESCRIPTION

1 PH6155001 1/8" COLLET
2 PH6155002 3/32" COLLET
3 PH6155003 COLLET NUT
4 PH6155004 COLLET SHIELD
5 PH6155005 HANGER
6 PH6155006
7 PH6155007 BRUSH CAP
8 PH6155008 CARBON BRUSH

9 PH6155009 VARIABLE SPEED LEVER
10 PH6155010 COLLET LOCK
11 PH6155011 ARMATURE

PLUG AND CORD

REF PART # DESCRIPTION

12 PH6155012 RUBBER CAP
13 PH6155013 WINDING
14 PH6155014 ELECT CONNECTOR
15 PH6155015 CONNECTING WIRE
16 PH6155016 ON/OFF SWITCH
17 PHTEK4 TAP SCREW 10-24 X 3/8"
18 PH6155018 STRAIN RELIEF
19 PH6155019 TOP HOUSING
20 PH6155020 BOTTOM HOUSING
21 PHTEK3 TAP SCREW #5 X 1/2"

Model H6155 Rotary Mini Grinder-10-

22

23

24

32

31

30

REF PART # DESCRIPTION

22 PH6155022 FLEX SHAFT
23 PH6155023 INNER SPINDLE
24 PH6155024 SANDING ASSORTMENT BAG
25 PH6155025 TOOL BIT ASSORTMENT BAG
26 PH6155026 CLAMP BASE
27 PH6155027 TELESCOPING TOOL HOLDER
28 PH6155028 TOOL BAG
29 PH6155029 FLASHLIGHT BASE
30 PH6155030 ROUTER BASE
31 PH6155031 FLEX SHAFT COLLET NUT
32 PH6155032 FLEX SHAFT COLLET
33 PH6155033 ROTARY MINI GRINDER

25

29

28

27

26

33

Model H6155 Rotary Mini Grinder -11-

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 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 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, special, 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 Authorization Number,” which must be clearly posted on
the outside as well as the inside of the carton. We will not accept any item back without 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 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.

Grizzly Industrial, Inc.

1203 Lycoming Mall Circle

Muncy, PA 17756

Phone: [phone]

Fax: [phone]

E-Mail:

[e-mail]

Web Site: http://www.grizzly.com

Thank you again for your business and continued support. We hope to serve you again
soon!

Model H6155 Rotary Mini Grinder-12-

WARRANTY CARD

Name ________________________________________________________________

Street _________________________________________________________

City____________________State________Zip ________________________

Phone Number____________E-Mail___________________Serial # _________

Model #

The following information is given on a voluntary basis. It will be used for marketing purposes to help

us develop better products and services. Of course, all information is strictly confidential.

_______________Serial#________________Order # _____________

1. How did you learn about us?
___Advertisement ___Friend
___Catalog ___Card Deck
___World Wide Web
___Other__________________________

2. What is your annual household income?
___$20,000-$29,999 ___$60,000-$69,999
___$30,000-$39,999 ___$70,000-$79,999
___$40,000-$49,999 ___$80,000-$89,999
___$50,000-$59,999 ___$90,000 +

3. What is your age group?
___20-29 ___50-59
___30-39 ___60-69
___40-49 ___70 +

4. How long have you been a woodworker?
___0 - 2 Years ___8 - 20 Years
___2 - 8 Years ___20+ Years

5. How would you rank your woodworking skills?
___Simple ___Advanced
___Intermediate ___Master Craftsman

6. What stationary woodworking tools do you own?
Check all that apply.

___Air Compressor ___Panel Saw
___Band Saw ___Planer
___Drill Press ___Power Feeder
___Drum Sander ___Radial Arm Saw
___Dust Collector ___Shaper
___Spindle Sander ___Jointer
___Table Saw ___Lathe

___Mortiser ___Wide Belt Sander

___Horiz.Boring Machine
___Vacuum Veneer Press
___Other______________________________

7. How many of your woodworking machines are
Grizzly? _____________

8. Which benchtop tools do you own? Check all
that apply.

___1"x42" Belt Sander ___6" - 8" Grinder
___5" - 8" Drill Press ___Mini Lathe
___8" Table Saw ___8" - 10" Bandsaw

___Scroll Saw ___Disc/Belt Sander
___Spindle/Belt Sander ___Mini Jointer

___10"-12"Thickness Planer
___Other______________________________

9. How many of the machines checked above are
Grizzly? ____________

10. Which portable/hand held power tools do you own?
Check all that apply.

___Belt Sander ___Orbital Sander
___Biscuit Joiner ___Palm Sander
___Circular Saw ___Portable Planer
___Detail Sander ___Saber Saw
___Drill/Driver ___Reciprocating Saw

___Miter Saw ___Router

Other_________________________________

11. What machines/supplies would you like Grizzly
Industrial to carry?

________________________________________
________________________________________
________________________________________
________________________________________

12. What new accessories would you like Grizzly
Industrial to carry?

________________________________________
________________________________________
________________________________________
________________________________________

13. What other companies do you purchase your tools
and supplies from?

________________________________________
________________________________________
________________________________________
________________________________________

14. Do you think your purchase represents good
value?

___Yes ___No

15. Would you recommend Grizzly to a friend?

___Yes ___No

16. Would you allow us to use your name as a refer
ence for Grizzly customers in your area? Note: We

never use names more than three times.

___Yes ___No

17.Comments:________________________________
_________________________________________
_________________________________________
_________________________________________

-

Send a Grizzly Catalog to a friend:

Name________________________________

Street________________________________

City______________State______Zip_______

FOLD ALONG DOTTED LINE

GRIZZLY INDUSTRIAL, INC.
P.O. BOX 2069
BELLINGHAM, WA 98227-2069

TAPE ALONG EDGES--PLEASE DO NOT STAPLE

Place

Stamp

Here