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OPERATOR’S MANUAL
ROTARY TOOL KIT
HT230
Your rotary tool kit has been engineered and manufactured to our high standard for dependability, ease of operation, and
operator safety. When properly cared for, it will give you years of rugged, trouble-free performance.
WARNING: To reduce the risk of injury, the user must read and understand the operator’s manual before using
this product.
Thank you for your purchase.
SAVE THIS MANUAL FOR FUTURE REFERENCE
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TABLE OF CONTENTS
Introduction ..................................................................................................................................................................... 2
Warranty .......................................................................................................................................................................... 2
� General Safety Rules .................................................................................................................................................... 3-4
� Specific Safety Rules ....................................................................................................................................................... 4
� Symbols ........................................................................................................................................................................5-6
�� Electrical .......................................................................................................................................................................... 7
�� Features ........................................................................................................................................................................8-9
�� Assembly ......................................................................................................................................................................... 9
� Operation .................................................................................................................................................................. 10-19
� Maintenance .................................................................................................................................................................. 20
� Parts Ordering / Service ...................................................................................................................................Back Page
INTRODUCTION
This product has many features for making its use more pleasant and enjoyable. Safety, performance, and dependability
have been given top priority in the design of this product making it easy to maintain and operate.
WARRANTY
RYOBI® POWER TOOL - LIMITED TWO YEAR WARRANTY AND 30 DAY EXCHANGE POLICY
One World Technologies, Inc., warrants its RYOBI
30-DAY EXCHANGE POLICY: During the first 30 days after date of purchase, you may either request service under this
warranty or you may exchange any RYOBI
materials by returning the power tool to the dealer from which it was purchased. To receive a replacement power tool
or requested warranty service, you must present proof of purchase and return all original equipment packaged with the
original product. The replacement power tool will be covered by the limited warranty for the balance of the two year period
from the date of the original purchase.
WHAT THIS WARRANTY COVERS: This warranty covers all defects in workmanship or materials in your RYOBI® power
tool for a period of two years from the date of purchase. With the exception of batteries, power tool accessories are
warranted for ninety (90) days. Batteries are warranted for two years.
HOW TO GET SERVICE: Just return the power tool, properly packaged and postage prepaid, to an Authorized Service
Center. You can obtain the location of the Service Center nearest you by contacting a service representative at One
World Technologies, Inc., P.O. Box 1207, Anderson, SC 29622-1207, by calling 1-800-525-2579 or by logging on to
www.ryobitools.com. When you request warranty service, you must also present proof of purchase documentation, which
includes the date of purchase (for example, a bill of sale). We will repair any faulty workmanship, and either repair or replace
any defective part, at our option. We will do so without any charge to you. We will complete the work in a reasonable time,
but, in any case, within ninety (90) days or less.
WHAT’S NOT COVERED: This warranty applies only to the original purchaser at retail and may not be transferred. This
warranty only covers defects arising under normal usage and does not cover any malfunction, failure or defects resulting
from misuse, abuse, neglect, alteration, modification or repairs by other than Authorized Service Centers. One World
Technologies, Inc. makes no warranties, representations or promises as to the quality or performance of its power tools
other than those specifically stated in this warranty.
ADDITIONAL LIMITATIONS: Any implied warranties granted under state law, including warranties of merchantability or
fitness for a particular purpose, are limited to two years from the date of purchase. One World Technologies, Inc. is not
responsible for direct, indirect, or incidental damages, so the above limitations and exclusions may not apply to you. This
warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
®
power tools with the following conditions:
®
power tool which does not work properly due to defective workmanship or
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GENERAL SAFETY RULES
WARNING:
Read and understand all instructions. Failure to follow
all instructions listed below, may result in electric shock,
fire and/or serious personal injury.
SAVE THESE INSTRUCTIONS
WORK AREA
Keep your work area clean and well lit. Cluttered
benches and dark areas invite accidents.
Do not operate power tools in explosive atmospheres,
such as in the presence of flammable liquids, gases,
or dust. Power tools create sparks which may ignite the
dust or fumes.
Keep bystanders, children, and visitors away while
operating a power tool. Distractions can cause you to
lose control.
Avoi d acci denta l starting. Be sure switch is off
before plugging in. Carrying tools with your finger on
the switch or plugging in tools that have the switch on
invites accidents.
Remove adjusting keys or wrenches before turning
the tool on. A wrench or a key that is left attached to a
rotating part of the tool may result in personal injury.
Do not overreach. Keep proper footing and balance
at all times. Proper footing and balance enables better
control of the tool in unexpected situations.
Use safety equipment. Always wear eye protection.
Dust mask, nonskid safety shoes, hard hat, or hearing
protection must be used for appropriate conditions.
Do not wear loose clothing or jewelry. Contain long
hair. Loose clothes, jewelry, or long hair can be drawn
into air vents.
Do not use on a ladder or unstable support. Stable
footing on a solid surface enables better control of the
tool in unexpected situations.
ELECTRICAL SAFETY
Double insulated tools are equipped with a polarized
plug (one blade is wider than the other). This plug will
fit in a polarized outlet only one way. If the plug does
not fit fully in the outlet, reverse the plug. If it still
does not fit, contact a qualified electrician to install a
polarized outlet. Do not change the plug in any way.
Double insulation
wire grounded power cord and grounded power supply
system.
Avoid body contact with grounded surfaces such as
pipes, radiators, ranges, and refrigerators. There is an
increased risk of electric shock if your body is grounded.
Don’t expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of electric
shock.
Do not abuse the cord. Never use the cord to carry the
tools or pull the plug from an outlet. Keep cord away
from heat, oil, sharp edges, or moving parts. Replace
damaged cords immediately. Damaged cords increase
the risk of electric shock.
When operating a power tool outside, use an outdoor
extension cord marked “W-A” or “W”. These cords
are rated for outdoor use and reduce the risk of electric
shock.
eliminates the need for the three-
PERSONAL SAFETY
Stay alert, watch what you are doing and use common
sense when operating a power tool. Do not use tool
while tired or under the influence of drugs, alcohol,
or medication. A moment of inattention while operating
power tools may result in serious personal injury.
Dress properly. Do not wear loose clothing or jewelry.
Contain long hair. Keep your hair, clothing, and gloves
away from moving parts. Loose clothes, jewelry, or long
hair can be caught in moving parts.
TOOL USE AND CARE
Use clamps or other practical way to secure and
support the workpiece to a stable platform.
the work by hand or against your body is unstable and
may lead to loss of control.
Do not force tool. Use the correct tool for your
application. The correct tool will do the job better and
safer at the rate for which it is designed.
Do not use tool if switch does not turn it on or off. Any
tool that cannot be controlled with the switch is dangerous
and must be repaired.
Disconnect the plug from power source before making
any adjustments, changing accessories, or storing the
tool. Such preventive safety measures reduce the risk of
starting the tool accidentally.
Store idle tools out of the reach of children and other
untrained persons. Tools are dangerous in the hands of
untrained users.
Maintain tools with care. Keep cutting tools sharp
and clean. Properly maintained tools with sharp cutting
edges are less likely to bind and are easier to control.
Check for misalignment or binding of moving parts,
breakage of parts, and any other condition that may
affect the tool’s operation. If damaged, have the tool
serviced before using. Many accidents are caused by
poorly maintained tools.
Use only accessories that are recommended by the
manufacturer for your model. Accessories that may be
suitable for one tool, may become hazardous when used
on another tool.
Keep the tool and its handle dry, clean and free from
oil and grease. Always use a clean cloth when cleaning.
Never use brake fluids, gasoline, petroleum-based
products, or any strong solvents to clean your tool.
Following this rule will reduce the risk of loss of control
and deterioration of the enclosure plastic.
Holding
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GENERAL SAFETY RULES
SERVICE
Tool service must be performed only by qualified
repair personnel. Service or maintenance performed by
unqualified personnel may result in a risk of injury.
SPECIFIC SAFETY RULES
Hold tool by insulated gripping surfaces when
performing an operation where the cutting tool may
contact hidden wiring or its own cord. Contact with a
“live” wire will make exposed metal parts of the cutting
tool “live” and shock the operator.
Accessories must be rated for at least the speed
recommended on the tool warning label. Wheels and
other accessories running over rated speed can fly apart
and cause injury.
Know your power tool. Read operator’s manual
carefully. Learn its applications and limitations, as well
as the specific potential hazards related to this tool.
Following this rule will reduce the risk of electric shock,
fire, or serious injury.
Always wear safety glasses. Everyday eyeglasses
have only impact-resistant lenses; they are NOT safety
glasses. Following this rule will reduce the risk of serious
personal injury.
Protect your lungs. Wear a face or dust mask if the
operation is dusty. Following this rule will reduce the risk
of serious personal injury.
Protect your hearing. Wear hearing protection during
extended periods of operation. Following this rule will
reduce the risk of serious personal injury.
Inspect tool cords periodically and, if damaged, have
repaired at your nearest Authorized Service Center.
Constantly stay aware of cord location. Following this
rule will reduce the risk of electric shock or fire.
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
by an authorized service center. Following this rule will
reduce the risk of shock, fire, or serious injury.
Make sure your extension cord is in good condition.
When using an extension cord, be sure to use one
When servicing a tool, use only identical replacement
parts. Follow instructions in the Maintenance section
of this manual. Use of unauthorized parts or failure to
follow Maintenance Instructions may create a risk of
shock or injury.
heavy enough to carry the current your product will
draw. A wire gauge size (A.W.G.) of at least 16 is
recommended for an extension cord 50 feet or less in
length. A cord exceeding 100 feet is not recommended.
If in doubt, use the next heavier gauge. The smaller
the gauge number, the heavier the cord. An undersized
cord will cause a drop in line voltage resulting in loss of
power and overheating.
Inspect for and remove all nails from lumber before
using this tool. Following this rule will reduce the risk of
serious personal injury.
Do not operate the flexible shaft with a sharp bend.
Over bending the shaft can generate excessive heat on
the jacket or hand piece. The recommended minimum
bend radius is 6 in.
After changing bits or making any adjustments, make
sure the collet nut and any other adjustment devices
are securely tightened. A loose adjustment device can
unexpectedly shift, causing loss of control. Loose rotating
components will be violently thrown.
Do not reach in the area of the spinning bit. The
proximity of the spinning bit to your hand may not always
be obvious.
Do not grind or sand heat flammable materials. Sparks
from the wheel could ignite these materials.
This product is not intended for use as a dental drill or
in human or veterinary medical applications. Serious
injury may result.
When using steel screws, cut-off wheels, high speed
cutters, or tungsten carbide cutters, always have
the work securely clamped. Never attempt to hold
the work with one hand while using any of these
accessories.
If the power supply cord is damaged, it must be replaced
only by the manufacturer or by an authorized service
center to avoid risk.
Save these instructions. Refer to them frequently and
use them to instruct others who may use this tool. If you
loan someone this tool, loan them these instructions
also.
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SYMBOLS
Some of the following symbols may be used on this product . Please study them and learn their meaning. Proper
interpretation of these symbols will allow you to operate the product better and safer.
SYMBOL NAME
V Volts Voltage
A Amperes Current
Hz Hertz Frequency (cycles per second)
W Watt Power
min Minutes Time
Alternating Current Type of current
Direct Current Type or a characteristic of current
n
o
.../min Per Minute Revolutions, strokes, surface speed, orbits etc., per minute
No Load Speed Rotational speed, at no load
Class II Construction Double-insulated construction
DESIGNATION/EXPLANATION
Wet Conditions Alert Do not expose to rain or use in damp locations.
Read The Operator’s Manual
Eye Protection
Safety Alert Precautions that involve your safety.
No Hands Symbol
No Hands Symbol
No Hands Symbol
No Hands Symbol
To reduce the risk of injury, user must read and understand
operator’s manual before using this product.
Always wear safety goggles or safety glasses with side shields and,
as necessary, a full face shield when operating this product.
Failure to keep your hands away from the blade will result in serious
personal injury.
Failure to keep your hands away from the blade will result in serious
personal injury.
Failure to keep your hands away from the blade will result in serious
personal injury.
Failure to keep your hands away from the blade will result in serious
personal injury.
Hot Surface
To reduce the risk of injury or damage, avoid contact with any hot
surface.
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SYMBOLS
The following signal words and meanings are intended to explain the levels of risk associated with this product.
SYMBOL SIGNAL MEANING
DANGER:
WARNING:
CAUTION:
CAUTION:
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.
(Without Safety Alert Symbol) Indicates a situation that may result in property
damage.
SERVICE
Servicing requires extreme care and knowledge and should
be performed only by a qualified service technician. For
service we suggest you return the product to the nearest
AU THORIZED SERVICE CE NTER for repair. W hen
servicing, use only identical replacement parts.
WARNING:
To avoid serious personal injury, do not attempt
to use this product until you read thoroughly and
understand completely the operator’s manual. If you
do not understand the warnings and instructions in the
operator’s manual, do not use this product. Call Ryobi
customer service for assistance.
WARNING:
The operation of any power tool can result in foreign objects being thrown into your eyes, which can
result in severe eye damage. Before beginning power tool operation, always wear safety goggles or
safety glasses with side shields and, when needed, a full face shield. We recommend Wide Vision
Safety Mask for use over eyeglasses or standard safety glasses with side shields. Always use eye
protection which is marked to comply with ANSI Z87.1.
SAVE THESE INSTRUCTIONS
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ELECTRICAL
DOUBLE INSULATION
Double insulation is a concept in safety in electric power
tools, which eliminates the need for the usual threewire grounded power cord. All exposed metal parts are
isolated from the internal metal motor components with
protecting insulation. Double insulated tools do not need
to be grounded.
WARNING:
The double insulated system is intended to protect
the user from shock resulting from a break in the tool’s
internal insulation. Observe all normal safety precautions
to avoid electrical shock.
NOTE: Servicing of a product with double insulation requires
extreme care and knowledge of the system and should
be performed only by a qualified service technician. For
service, we suggest you return the product to your nearest
authorized service center for repair. Always use original
factory replacement parts when servicing.
ELECTRICAL CONNECTION
This product has a precision-built electric motor. It should
be connected to a power supply that is 120 volts, 60 Hz,
AC only (normal household current). Do not operate this
product on direct current (DC). A substantial voltage drop
will cause a loss of power and the motor will overheat. If
the product does not operate when plugged into an outlet,
double-check the power supply.
EXTENSION CORDS
When using a power tool at a considerable distance from
a power source, be sure to use an extension cord that has
the capacity to handle the current the product will draw. An
undersized cord will cause a drop in line voltage, resulting in
overheating and loss of power. Use the chart to determine
the minimum wire size required in an extension cord. Only
round jacketed cords listed by Underwriter’s Laboratories
(UL) should be used.
When working outdoors with a product , use an extension
cord that is designed for outside use. This type of cord is
designated with “WA” on the cord’s jacket.
Before using any extension cord, inspect it for loose or
exposed wires and cut or worn insulation.
**Ampere rating (on product data plate)
0-2.0 2.1-3.4 3.5-5.0 5.1-7.0 7.1-12.0 12.1-16.0
Cord Length Wire Size (A.W.G.)
25' 16 16 16 16 14 14
50' 16 16 16 14 14 12
100' 16 16 14 12 10 —
**Used on 12 gauge - 20 amp circuit.
NOTE: AWG = American Wire Gauge
WARNING:
Keep the extension cord clear of the working area.
Position the cord so that it will not get caught on
lumber, tools, or other obstructions while you are working
with a power tool. Failure to do so can result in serious
personal injury.
WARNING:
Check extension cords before each use. If damaged
replace immediately. Never use the product with a
damaged cord since touching the damaged area could
cause electrical shock resulting in serious injury.
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FEATURES
PRODUCT SPECIFICATIONS
Collet ........................................................................ 1/8 in.
Switch ......................................................... Variable Speed
CLEANING
BRUSH
TELESCOPING
TOOL HANGER
No Load Speed ......................10,000-35,000 r/min. (RPM)
Input ............................... 120 V, 60 Hz, AC only, 1.2 Amps
ON ( I )/OFF ( O )
SWITCH
DIGITAL
DISPLAY
SPEED CONTROL
BUTTONS
CLAMP-ON
BASE
SPINDLE
LOCK
PLUNGE CUTTING
ACCESSORY
FLEX SHAFT
Fig. 1
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FEATURES
KNOW YOUR ROTARY TOOL KIT
See Figure 1.
The safe use of this product requires an understanding of the
information on the product and in this operator’s manual as
well as a knowledge of the project you are attempting. Before
use of this product, familiarize yourself with all operating
features and safety rules.
CLEANING BRUSH
Use the cleaning brush to quickly clean the workpiece, rotary
tool, and accessories.
DIGITAL DISPLAY
The speed of the tool is conveniently shown on the digital
display.
ASSEMBLY
UNPACKING
This product has been shipped completely assembled.
Carefully remove the product and any accessories from
the box. Make sure that all items listed in the packing list
are included.
Inspect the product carefully to make sure no breakage
or damage occurred during shipping.
Do not discard the packing material until you have carefully
inspected and satisfactorily operated the product.
If any parts are damaged or missing, please call
1-800-525-2579 for assistance.
PACKING LIST
Rotary Tool
Accessories (See Accessory Chart)
Case
Locking Key
Wrench
Cleaning Brush
Plunge Cutting Accessory
Collet (4)
Telescoping Tool Hanger
Flex Shaft
Tool Hanger Clamp-on Base
Operator’s Manual
FLEX SHAFT
A flexible shaft can be connected to the rotary tool for
working in hard to reach areas and for better control during
delicate work.
PLUNGE CUTTING ACCESSORY
The plunge cutting accessory attaches to the end of the
rotary tool. Depth of cut can be adjusted in 1/8 in. increments
up to 1 in.
SPEED CONTROL BUTTONS
The speed control buttons allow you to easily select tool
speed.
TELESCOPING TOOL HANGER
The telescoping tool hanger provides a convenient place to
hang the rotary tool while the flex shaft is in use.
WARNING:
If any parts are damaged or missing do not operate
this product until the parts are replaced. Failure to heed
this warning could result in serious personal injury.
WARNING:
Do not attempt to modify this product or create
accessories not recommended for use with this product.
Any such alteration or modification is misuse and could
result in a hazardous condition leading to possible serious
personal injury.
WARNING:
Do not connect to power supply until assembly is
complete. Failure to comply could result in accidental
starting and possible serious personal injury.
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OPERATION
WARNING:
Do not allow familiarity with products to make you
careless. Remember that a careless fraction of a second is
sufficient to inflict serious injury.
WARNING:
Always wear safety goggles or safety glasses with side
shields when operating power tools. Failure to do so
could result in objects being thrown into your eyes
resulting in possible serious injury.
WARNING:
Do not use any attachments or accessories not
recommended by the manufacturer of this product. The
use of attachments or accessories not recommended
can result in serious personal injury.
APPLICATIONS
You may use this product for the purposes listed below:
Cutting
Sanding
Polishing and buffing
Engraving
Drilling
TURNING THE ROTARY TOOL ON/OFF
See Figure 2.
To turn the tool ON: push the ON ( I )/OFF ( O ) switch to
the ON ( I ) position.
To turn the tool OFF: push the ON ( I )/OFF ( O ) switch
to the OFF ( O ) position.
CAUTION:
To prevent damage to the spindle or spindle lock, always
allow motor to come to a complete stop before engaging
the spindle lock.
CHANGING COLLETS
See Figure 3.
Two 1/8 in. collets, one 1/16 in. collet, and one 3/32 in. collet
are included with the rotary tool to accommodate different
shank sizes.
To change the collet:
Unplug the rotary tool.
Press and hold the spindle lock, and rotate the shaft by
hand until the spindle lock engages the shaft, preventing
further rotation.
ON ( I )/OFF ( O )
SWITCH
Fig. 2
WRENCH
SPINDLE LOCK
COLLET
NUT
With the spindle lock engaged, use the collet wrench to
loosen the collet nut, if necessary.
Remove the collet nut and old collet using provided collet
wrench, if necessary.
Insert the unslotted end of the collet in the hole in the end
of the tool shaft.
Replace the collet nut on the shaft.
COLLET
Fig. 3
WARNING:
Always use the collet which matches the shank size of the
accessory you plan to use. Never force a large diameter
shank into a collet. The accessory should fit smoothly into
the collet, but you should be able to tighten the accessory
firmly and securely with the provided wrench.
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OPERATION
ACCESSORY CHART
Quantity Accessory Application
6 Orange 120-Grit Aluminum Oxide Grinding Wheel Bits
4 Green 120-Grit Silicon Carbide Grinding Wheel Bits
3
4
1 1/4 in. Drum Sander Mandrel Attaching sanding drums
1 1/2 in. Drum Sander Mandrel Attaching sanding drums
4 Green Rubber Polishing Bits
36 15/16 in. X 1/64 in. Cut-off Discs Cutting ferrous materials
1 Polishing Compound Vial Polishing
72 15/16 in. X 1/32 in. Cut-off Discs Cutting ferrous materials
6 3/4 in. Pink 220-Grit Aluminum Oxide Grinding Wheels
4 1/2 in. Felt Polishing Wheels
1 7/8 in. X 5/32 in. Rubber Emery Wheel
17 1/4 in. X 1/2 in. Sanding Drums (60-Grit and 120-Grit) Sanding
17 1/2 in. X 1/2 in. Sanding Drums (60-Grit and 120-Grit) Sanding
6
1 Silicon Carbide Dressing Stone
1 Cloth Polishing Wheels Polishing and buffing
1 Diamond Cut-off Wheel
1 1 in. Felt Polishing Wheel Polishing and buffing
1 Felt Polishing Drum Polishing and buffing
5 1-1/4 in. Fiberglass Cut-off Wheels Cutting ferrous materials
1 1/8 in. Screw Mandrel Attaching felt attachments
3
1 1-1/4 in. X 3/8 in. 80-Grit Sanding Flap Wheel Removing rust and mold
14 High Speed Steel Drill Bits (1/16 in., 3/32 in., 1/8 in.) Drilling
5 Diamond Wheel Points
1 1/8 in. Drywall Cutting Bit Cutting drywall
3/4 in. Wire Circle Brushes (nylon, brass, stainless
steel)
Wire Cup Brushes ( 3/16 in. nylon, 3/16 in. and 5/8 in.
brass, 5/8 in. stainless steel)
3/4 in. Green 180-Grit Aluminum Oxide Grinding
Wheels
Mandrels (1/8 in. shank X 1/16 in. and 1/8 in. shank X
3/32 in.)
Ferrous materials: casting, welds, rivets,
rust
Non-ferrous materials: stone, ceramics,
porcelain, glass
Nylon brush: removing dirt and dust
Brass and steel brush: removing rust
Nylon brush: removing dirt and dust
Brass and steel brush: removing rust
Ferrous materials: removing small burrs
and scratch marks
Ferrous materials: casting, welds, rivets,
rust
Buffing to a bright finish with polishing
compound
Buffing to a bright finish with polishing
compound
Ferrous materials: removing small burrs
and scratch marks
Bringing shape back to parabolic shaped
grinding attachments
Cutting marble, concrete, brick, porcelain,
ceramic, epoxy, and hard woods
Attaching cut-off discs, cut-off wheels,
grinding wheels, and emery wheel
Cutting, engraving, carving, and fine
detailing work
Wood, jade, ceramic, glass, hardened
steel, and semi-precious stones
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OPERATION
WARNING:
If you are changing an accessory immediately after
use, be careful not to touch the collet, collet nut, or the
accessory with your hands or fingers. You will get burned
because of the heat buildup from cutting. Always use the
wrench provided.
CAUTION:
To prevent damage to the spindle or spindle lock, always
allow motor to come to a complete stop before engaging
the spindle lock.
INSTALLING ACCESSORIES
See Figures 4 - 5.
Unplug the rotary tool.
Press and hold the spindle lock, and rotate the shaft by
hand until the spindle lock engages the shaft, preventing
further rotation.
With the spindle lock engaged, use the collet wrench to
loosen the collet nut, if necessary.
Insert the shank of the accessory into the collet until the
shank bottoms out, then pull it out 1/16 in. to allow for
expansion when the accessory gets hot.
With the spindle lock engaged, tighten the collet nut with
the provided wrench until the accessory shank is gripped
by the collet. Avoid excess tightening of the collet nut.
SPINDLE LOCK
COLLET
COLLET NUT
Fig. 4
GRINDING WHEEL
BITS
REMOVING ACCESSORIES
See Figures 4 - 5.
Unplug the rotary tool.
With the spindle lock engaged, loosen the collet nut with
the provided wrench.
Remove the accessory.
RUBBER
POLISHING BITS
SANDING FLAP
WHEEL
WIRE BRUSHES
Fig. 5
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OPERATION
CAUTION:
To prevent damage to the spindle or spindle lock, always
allow motor to come to a complete stop before engaging
the spindle lock.
USING THE MANDRELS
See Figures 6 - 8.
Three types of mandrels have been included for use with
this kit. The standard mandrel is used with the cut-off discs,
grinding wheels, emery wheel, and cut-off wheels. The screw
mandrel is used with the polishing wheels and polishing drum.
The drum mandrel is used with the sanding drums.
To install:
Unplug the rotary tool.
Install the mandrel.
If using the standard mandrel:
Press and hold the spindle lock.
Insert the slot end of the provided wrench into the slot
on top of the mandrel and unscrew.
Remove mandrel screw and washer.
Place desired accessory over mandrel shaft and align
accessory hole with mandrel hole.
Insert mandrel screw with washer through the accessory
and mandrel shaft holes.
NOTE: The mandrel washer should be placed between
the mandrel screw and the accessory.
Tighten using provided wrench.
If using the screw mandrel:
Align desired accessory hole with mandrel screw head.
Screw accessory onto mandrel by twisting clockwise until
secure.
If using the drum mandrel:
Align appropriate sized sanding drum over mandrel and
push down to completely cover drum end of mandrel.
NOTE: If necessary, tighten the screw on the drum
mandrel head to expand the drum and securely hold the
sanding drum in place.
WASHER
TIGHTEN
MANDREL SCREW
CUT-OFF DISC
MANDREL
COLLAR
COLLET
Fig. 6
SPINDLE LOCK
Fig. 7
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OPERATION
BALANCING ACCESSORIES
For precision work, it is important that all accessories be
properly balanced. To balance an accessory, slightly loosen
the collet nut and give the accessory or collet a 1/4 in. turn.
You should be able to tell by the sound and feel if the accessory
is running in balance. Continue adjusting in this fashion until
the best balance is achieved. Replace accessories if they
become damaged or unbalanced.
SELECTING THE RIGHT SPEED
See Figure 9.
The rotary tool has a speed range of 10,000 to 35,000 RPM.
To select the right speed for each job, use a practice piece of
material. Vary speed to find the best speed for the accessory
you are using and the job to be done.
The digital display shows the speed setting of the tool using
the numbers 10-35. Press the + speed control button to
increase the speed, and press the – speed control button
to decrease the speed. Speed settings are approximately
one thousandth of the RPM. For example, a speed setting
of 10 is approximately 10,000 RPM, and a speed setting of
35 is approximately 35,000 RPM.
Refer to the Speed Dial Settings table to determine the proper
speed, based on the material being worked and the type of
accessory being used.
FIBERGLASS
CUT-OFF WHEEL
DIAMOND
CUT-OFF WHEEL
SLOWER SPEEDS
Certain materials, some plastics for example, require a
relatively slow speed because the friction of the tool generates
heat and causes the plastic to melt at high speed.
Slow speeds (15,000 RPM or less) are usually best for
polishing operations using the polishing accessories. They
may also be best for working on delicate projects, delicate
wood carving and fragile model parts.
WARNING:
Wire brushes must never be operated at speeds higher
than 15,000 RPM. Wire brushes must run at least one
minute before use. During this period, no one should
stand in front of or in line with the rotating brush. Failure
to heed this warning could result in serious personal
injury.
Higher speeds are better for carving, cutting, and shaping
wood.
Hardwoods, metals, and glass require high speed operation.
Drilling should also be done at high speeds.
SANDING DRUMS
SPEED CONTROL
BUTTONS
Fig. 8
DIGITAL
DISPLAY
Fig. 9
14
Page 15
OPERATION
To determine the optimum operational speed for different
materials and accessories, refer to the Speed Dial Settings
table. Look this table over and become familiar with it.
The best way to determine the correct speed for work on
any material is to practice for a few minutes on a piece of
scrap, even after referring to the table. You can quickly
learn that a slower or faster speed is more effective just by
observing what happens when you make a pass or two at
different speeds.
When working with a scrap piece of plastic, start at a slow
rate of speed and increase the speed until you observe
whether the plastic is melting at the point of contact; reduce
the speed slightly to get optimum working speed without
melting the workpiece.
SPEED DIAL SETTINGS
Type of
Accessory
Cut-off
Discs
Engraving
Cutter
Rubber
Polishing
Points
Aluminum
Oxide
Grinding
Stones
Silicon
Carbide
Grinding
Stone
Wire
Wheels
Soft
Wood
25-30 18-30 10-18 10-18 10-30 — — —
25-30 25-30 15-25 25-30 10-18 — — —
— — — 10-15 10-15 — — —
— — 10-15 — 10-18 10-18 — —
— — — — 10-15 10-15 12-15 10-15
10-15 10-15 — 10-15 10-15 10-15 — —
Hard
Wood
Laminates
Plastics
NOTE:
Plastic and materials that melt at low temperatures should
be cut at low speeds.
Soft wood should be cut at high speed.
Aluminum, tin, and copper, lead, and zinc alloys may be
cut at any speed, depending on the type of cutting being
done. Use paraffin or other suitable lubricant on the cutter
to prevent the cut material from adhering to the cutter
teeth.
WARNING:
Wire brushes must never be operated at speeds higher
than 15,000 RPM. Wire brushes must run at least one
minute before use. During this period, no one should
stand in front of or in line with the rotating brush. Failure
to heed this warning could result in serious personal
injury.
Steel
Aluminum,
Brass, Etc.
Shell/
Stone
Ceramic
Glass
15
Page 16
OPERATION
OPERATING THE ROTARY TOOL
See Figure 10.
Learning to use the rotary tool:
Hold the tool in your hand and get used to its weight,
balance, and the taper of the housing. This taper permits
the tool to be grasped like a pencil.
Examine the rotary tool accessories carefully. Damaged
accessories can fly apart as they come up to speed and
should not be used. The use of damaged accessories
can result in serious personal injury.
Practice on scrap materials first to see how the tool
operates. Keep in mind that the work is done by the speed
of the tool and by the accessory in the collet. You should
not lean on or push the tool into the work.
It is best to make a series of passes with the tool rather than
attempt to do all the work in one pass. To make a cut, pass
the tool back and forth over the work like you would a small
paint brush. Cut a little material on each pass until you reach
the desired depth. For most work, a gentle touch is best;
you will have greater control, make fewer errors, and get the
most efficient work out of the accessory.
For the best control in close work, grip the tool like a pencil
between your thumb and forefinger.
A “hand grip” method of holding the tool is used for operations
such as grinding a flat surface or using cut-off discs.
To operate the rotary tool:
� Secure all work in a vise or clamp to a workbench to
prevent it from moving under the tool.
Hold the tool in front and away from you, keeping the tool
accessory clear of the workpiece.
� Turn on the tool and let the motor and accessory build
up to full speed.
� Lower the tool gradually until the accessory contacts the
workpiece.
Move the tool continuously at a steady, consistent
pace.
Use just enough pressure to keep the tool from chattering
or bouncing.
NOTE: Heavy pressure will decrease the tool’s speed and
put a strain on the motor. The weight of the tool alone is
adequate for most jobs.
� Lift the tool away from the workpiece before turning off
the tool.
PENCIL HOLDING
METHOD
Fig. 10
16
Page 17
OPERATION
TELESCOPING TOOL HANGER WITH CLAMP
ON BASE
See Figure 11.
The telescoping tool hanger provides a convenient place to
hang the rotary tool while the flex shaft is in use.
To clamp the base to a worktable:
Turn the clamp screw counterclockwise to open the
clamping area.
Place clamp over edge of worktable.
Turn the clamp screw clockwise until the clamp is
secure.
To attach the tool hanger to the base:
Turn the lower part of the tool hanger clockwise to
unlock.
Pull the tool hanger up to lengthen or push the tool hanger
down to shorten its height.
Turn the lower part of the tool hanger counterclockwise
to lock into place.
Screw the tool hanger into the top of the clamp.
NOTE: When using the flex shaft, hang the rotary tool from
the tool hanger hook using the hook located on the back of
the rotary tool.
TOOL HANGER
HOOK
TOOL HANGER
CLAMP-ON BASE
ROTARY TOOL
HOOK
FLEX SHAFT
CAUTION:
To prevent damage to the spindle or spindle lock, always
allow motor to come to a complete stop before engaging
the spindle lock.
OPERATING THE FLEX SHAFT
See Figures 12 - 14.
The 1/8 in. collet must be inserted into the rotary tool before
the flex shaft can be installed.
To install the flex shaft:
Unplug the rotary tool.
Loosen collet sleeve by turning counterclockwise and
remove.
Press and hold the spindle lock, and rotate the shaft by
hand until the spindle lock engages the shaft, preventing
further rotation.
With the spindle lock engaged, use the collet wrench to
loosen the collet nut, if necessary.
Remove collet nut and collet.
Insert the 1/8 in. collet.
Replace the collet nut and tighten loosely.
CLAMP SCREW
COLLET SLEEVE
DRIVE
SHAFT
COLLAR
COLLET
NUT
CUP END OF
FLEX SHAFT
Insert drive shaft into collet nut until the collar meets the
collet nut.
Tighten the collet nut completely, keeping collar in contact
with collet nut.
Insert cup end of flex shaft onto rotary tool head. Turn
clockwise to tighten.
1/8 in.
COLLET
ROTARY
TOOL HEAD
Fig. 11
Fig. 12
17
Page 18
OPERATION
To install accessories into the flex shaft:
Unplug the rotary tool.
Locate the hole behind the collet nut in the flex shaft
body.
Turn the collet nut until the hole in the flex shaft body
aligns with the hole visible inside the flex shaft.
Insert provided locking key into the aligned holes to lock
collet nut into place.
Insert the shank of the accessory into the collet nut until
the shank bottoms out, then pull it out 1/16 in. to allow
for expansion when the accessory gets hot.
With the key still in place, tighten the collet nut with the
provided wrench until the accessory shank is gripped by
the collet. Avoid excess tightening of the collet nut.
Remove the key.
To remove accessories from the flex shaft:
Unplug the rotary tool.
Locate hole behind the collet nut in the flex shaft body.
Turn collet nut until the hole in the flex shaft body aligns
with the hole visible inside the flex shaft.
Insert provided locking key into the aligned holes to lock
collet nut into place.
With the hex still in place, loosen the collet nut with the
provided wrench.
Remove the accessory.
To operate the rotary tool using the flex shaft:
Secure all work in a vise or clamp to a workbench to
prevent it from moving under the tool.
Grip the flex shaft along the grooved gripping section.
Hold the tool in front and away from you, keeping the tool
accessory clear of the workpiece.
Turn on the tool and let the motor and accessory build
up to full speed.
Lower the tool gradually until the accessory contacts the
workpiece.
Move the tool continuously at a steady, consistent
pace.
Use just enough pressure to keep the tool from chattering
or bouncing.
NOTE: Heavy pressure will decrease the tool’s speed and
put a strain on the motor. The weight of the tool alone is
adequate for most jobs.
Lift the tool away from the workpiece before turning off
the tool.
COLLET
WRENCH
GROOVED
GRIPPING SECTION
NUT
HOLE
LOCKING KEY
Fig. 13
Fig. 14
18
Page 19
OPERATION
USING THE PLUNGE CUTTING ACCESSORY
See Figures 15 - 16.
The plunge cutting accessory attaches to the end of the
rotary tool. Depth of cut can be adjusted in 1/8 in. increments
up to 1 in.
To assemble the plunge cutting accessory:
Hold the cup-shaped accessory piece with the cup side
facing down.
Insert the cylinder-shaped accessory piece up through
the cup-shaped piece. The legs of the cylinder-shaped
piece should be facing down.
Align the groove in the cylinder-shaped piece with the
screw in the cup-shaped piece.
Tighten the screw to secure the cylinder-shaped piece in
place.
To install the plunge cutting accessory on the rotary
tool:
Unplug the rotary tool.
Install desired drill bit into rotary tool.
Loosen collet sleeve by turning counterclockwise and
remove.
Insert rotary tool into cylinder-shaped piece of the
accessory.
Turn accessory clockwise until it is securely screwed onto
the rotary tool.
To use the plunge cutting accessory:
Loosen the plunge cutting accessory screw until the
cup-shaped piece can be easily moved.
Align cup-shaped piece with the desired measurement
depth on the accessory scale.
Tighten screw until the accessory is secured.
Connect rotary tool to power supply.
Hold the tool in front and away from you, keeping the tool
bit clear of the workpiece.
Turn on the tool and let the motor and bit build up to full
speed.
Lower the tool gradually until the bit contacts the
workpiece.
Move the tool continuously at a steady, consistent
pace.
NOTE: The bit has reached the desired depth when
the plunge cutting accessory makes contact with the
workpiece.
Use just enough pressure to keep the tool from chattering
or bouncing.
NOTE: Heavy pressure will decrease the tool’s speed and
put a strain on the motor. Normally the weight of the tool
alone is adequate for most jobs.
Lift the tool away from the workpiece before turning off
the tool.
19
GROOVE
SCREW
SCREW
COLLET
SLEEVE
CYLINDER
PIECE
CUP
PIECE
Fig. 15
SCALE
Fig. 16
Page 20
MAINTENANCE
WARNING:
When servicing, use only identical replacement parts.
Use of any other parts may create a hazard or cause
product damage.
WARNING:
Always wear safety goggles or safety glasses with side
shields during power tool operation or when blowing
dust. If operation is dusty, also wear a dust mask.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use. Use
clean cloths to remove dirt, dust, oil, grease, etc.
WARNING:
Electric tools used on fiberglass material, wallboard, spackling
compounds, or plaster are subject to accelerated wear and
possible premature failure because the fiberglass chips
and grindings are highly abrasive to bearings, brushes,
commutators, etc. Consequently, we do not recommended
using this product for extended work on these types
of materials. However, if you do work with any of these
materials, it is extremely important to clean the product
using compressed air.
LUBRICATION
All of the bearings in this product are lubricated with a
sufficient amount of high grade lubricant for the life of the
unit under normal operating conditions. Therefore, no further
lubrication is required.
Do not at any time let brake fluids, gasoline, petroleumbased products, penetrating oils, etc., come in contact
with plastic parts. Chemicals can damage, weaken or
destroy plastic which may result in serious personal
injury.
20
Page 21
NOTES
21
Page 22
OPERATOR’S MANUAL
ROTARY TOOL KIT
HT230
WARNING:
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains
chemicals known to cause cancer, birth defects or other reproductive harm. Some examples of these
chemicals are:
• lead from lead-based paints,
• crystalline silica from bricks and cement and other masonry products, and
• arsenic and chromium from chemically-treated lumber.
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.
• SERVICE
Now that you have purchased your product, should a need ever exist for repair parts
or service, simply contact your nearest Authorized Service Center. Be sure to provide
all pertinent facts when you call or visit. Please call 1-800-525-2579 for your nearest
Authorized Service Center. You can also check our web site at www.ryobitools.com for a
complete list of Authorized Service Centers.
• MODEL NO. AND SERIAL NO.
The model number of this product will be found on a plate attached to the motor housing.
Please record the model number and serial number in the space provided below.
• HOW TO ORDER REPAIR PARTS
When ordering repair parts, always give the following information:
• MODEL NUMBER
• SERIAL NUMBER
Ryobi® is a registered trademark of Ryobi Limited used under license.
HT230
987000-010
9-15-06 (REV:01)
ONE WORLD TECHNOLOGIES, INC.
1428 Pearman Dairy Road, Anderson, SC 29625
Phone 1-800-525-2579
www.ryobitools.com
22
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