Universal Tool Steel Die Grinder Series UT8728S, UT8728SE Steel Die Grinder User Manual

Below you will find brief information for Steel Die Grinder UT8728S, Steel Die Grinder UT8728SE. The Universal Tool Steel Die Grinders are powerful and versatile tools for a variety of grinding and deburring applications. These grinders feature a powerful motor and a durable construction for long-lasting performance. They also include a safety lock-off mechanism for added safety.

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™
Universal Tool
UT8728S
Steel Die Grinder Series
DIE GRINDERS
General Safety Information &amp; Replacement Parts
UT8728S
UT8728SE
TABLE OF CONTENTS
General Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Air Compressor and Air Tool Safety. . . . . . . . . . . . . . . . . . . . 2-3
Tool Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Maintenance / Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Service Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
WARNING: This product contains lead, a chemical known to
the State of California to cause cancer and birth defects or
other reproductive harm. Wash hands after handling.
WARNING: This product contains chemicals known to
the State of California to cause cancer and birth defects or
other reproductive harm. Wash hands after handling.
WARNING: Risk of injury to persons. Read and
understand operation instructions. Always become familiar
with all the instructions and warnings before operating any
pneumatic tool.
FLORIDA-PNEUMATIC.COM
Please contact 1-800-356-3392 for further assistance.
Safety Information
7.2.2.3 GENERAL SAFETY RULES
• Multiple hazards. Read and understand the safety instructions before
installing, operating, repairing, maintaining, changing accessories on,
or working near the power tool. Failure to do so can result in serious
bodily injury.
• Only qualified and trained operators should install, adjust or use the
power tool.
• Do not modify this power tool. Modifications may reduce the effectiveness of safety measures and increase the risks to the operator.
• Do not discard the safety instructions – give them to the operator.
• Do not use a tool if the tool has been damaged.
• Warnings shall be given against the risk of explosion or fire due to the
material being processed;
• Warnings shall be given against the risk of cutting.
7.2.2.4 PROJECTILE HAZARDS
• Failure of the work piece, of accessories, or even of the tool itself may
generate high velocity projectiles.
• Always wear impact-resistant eye protection during operation of the
tool. The grade of protection required should be assessed for each
use.
7.2.2.5 ENTANGLEMENT HAZARDS
• Entanglement hazard - choking, scalping and/or lacerations can occur
if neck ware, hair or gloves are not kept away from tool and accessories.
7.2.2.6 OPERATING HAZARDS
• Use of the tool may expose the operator’s hands to hazards including
crushing, impacts, cuts and abrasions and heat. Wear suitable gloves
to protect hands.
• Operators and maintenance personnel must be physically able to
handle the bulk, weight and power of the tool.
• Hold the tool correctly: be ready to counteract normal or sudden
movements – have both hands available.
• Maintain a balanced body position and secure footing.
• Keep hands away from rotating or reciprocation accessories, spindles
or other moving parts.
• Release the start and stop device in the case of an interruption of the
energy supply
• Use only lubricants recommended by the manufacturer.
7.2.2.7 REPETITIVE MOTIONS HAZARDS
• When using a power tool, you may experience discomfort in your
hands, arms, shoulders, neck, or other parts of your body.
• While using a power tool, position your body in a comfortable
posture. Maintain secure footing and avoid awkward or off-balanced
postures. Changing your posture during extended tasks may help
avoid discomfort and fatigue.
• If you experience symptoms such as persistent or recurring discomfort, pain, throbbing, aching, tingling, numbness, burning sensation,
or stiffness, do not ignore these warning signs. Promptly tell your
employer and consult a qualified health professional.
7.2.2.8 ACCESSORY HAZARDS
• Only use sizes and types of accessories and consumables that are
recommended by the power tool manufacturer.
7.2.2.9 WORKPLACE HAZARDS
• Slips, trips and falls are major causes of workplace injury. Be aware
of slippery surfaces caused by use of the tool and also of trip hazards
caused by the air line or hydraulic hose.
• Proceed with care in unfamiliar surroundings. Hidden hazards may
exist, such as electricity or other utility lines.
• This power tool is not intended for use in potentially explosive atmospheres and is not insulated from coming into contact with electric
power.
• Make sure there are no electrical cables, gas pipes etc. that could
cause a hazard if damaged by use of the tool.
7.2.2.10 DUST AND FUME HAZARDS
• Dust from some work processes can cause cancer, birth defects or
other respiratory diseases. Risk assessment of these hazards and
implementation of appropriate controls is essential.
Universal Tool a Division of Florida-Pneumatic Manufacturing Corporation
851 Jupiter Park Lane, Jupiter FL 33458
• If the pneumatic tool is used in a dust filled environment exhaust
air can cause a dust hazard
• Dusts and fumes generated when using power tools can cause
ill health (for example: cancer, birth defects, asthma and/or dermatitis); risk assessment of these hazards and implementation of
appropriate controls of is essential.
• Risk assessment should include dust created by the use of the tool
and the potential for disturbing existing dust.
• Operate and maintain the power tool as recommended in these
instructions, to minimize dust or fume emissions
• Direct the exhaust so as to minimized disturbance of dust in a dust
filled environment
• Where dusts or fumes are created, the priority shall be to control
them at the point of emission.
• All integral features or accessories for the collection, extraction or
suppression of airborne dust or fumes should be correctly used
and maintained in accordance with the manufacturer’s instructions.
• Select, maintain and replace the consumable/inserted tool as
recommended in these instructions, to prevent an unnecessary
increase in dust or fumes
• Use respiratory protection as instructed by your employer or as
required by occupational health and safety regulations;
7.2.2.11 NOISE HAZARDS
• Unprotected exposure to high noise levels can cause permanent,
disabling, hearing loss and other problems such as tinnitus (ringing, buzzing, whistling or humming in the ears);
• Risk assessment of these hazards and implementation of appropriate controls of is essential.
• Appropriate controls to reduce the risk may include actions such as
damping materials to prevent work pieces from ‘ringing’
• Use hearing protection as instructed by your employer or as
required by occupational health and safety regulations;
• Operate and maintain the power tool as recommended in these
instructions, to prevent an unnecessary increase in noise levels;
• Select, maintain and replace the consumable/inserted tool as
recommended in these instructions, to prevent an unnecessary
increase in noise. 7.2.2.12 VIBRATION HAZARDS
• Exposure to vibration can cause disabling damage to the nerves
and blood supply of the hands and arms;
• Wear warm clothing when working in cold conditions and keep
your hands warm and dry;
• If you experience numbness, tingling, pain or whitening of the skin
in your fingers or hands, stop using the power tool, and tell your
employer. You should also seek medical advice from a qualified
occupational health professional.
• Operate and maintain the power tool as recommended in these
instructions, to prevent an unnecessary increase in vibration;
• Select, maintain and replace the consumable/inserted tool as
recommended in these instructions, to prevent an unnecessary
increase in vibration levels;
• Support the weight of the tool in a stand, tensioner or balancer,
because the operator can then use a lighter grip to support the tool.
• Hold the tool with a light but safe grip taking account of the
required hand reaction forces, because the risk from vibration is
generally greater when the grip force is higher.
7.2.3 ADDITIONAL SAFETY INSTRUCTIONS FOR PNEUMATIC
POWER TOOLS - AIR SUPPLY &amp; CONNECTION HAZARDS
• Air under pressure can cause severe injury.
• Always shut off air supply, drain hose of air pressure and disconnect tool from air supply when not in use, before changing accessories or when making repairs.
• Never direct air at yourself or anyone else.
• Whipping hoses can cause severe injury. Always check for damaged or loose hoses and fittings.
• Whenever universal twist couplings (claw couplings) are used, lock
pins must be installed.
• Do not exceed the maximum air pressure stated on the tool.
• Use whip check safety cables to safeguard against possible hose to
tool and hose to hose connection failure.
• Never carry an air tool by the hose.
Safety Information (continued)
AIR COMPRESSOR AND AIR TOOL SAFETY
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:
1. Risk of Bursting. Do not adjust the regulator to result in output
pressure greater than the marked maximum pressure of this air
tool.
Lead from lead based paint, crystalline silica from bricks
and cement and other masonry products, arsenic and
chromium from chemically-treated lumber.
2. Ensure the hose is free of obstructions or snags. Entangled or
snarled hoses can cause loss of balance or footing and may
become damaged.
Your risk from those 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 dust masks that
are specifically designed to filter out microscopic particles.
3. Never leave a tool unattended with the air hose attached.
4. Do not operate this tool if it does not contain a legible warning
label.
5. Do not continue to use a tool or hose that leaks air or does not
function properly.
6. Never direct a jet of compressed air toward people or animals.
7. Protect your lungs. Wear a face or dust mask if the operation is
dusty.
Important Warnings - Die Grinders
1. Only use mounted grinding stones or mounted carbide burrs that meet ANSI standards, ISO standards or both.
2. Never adjust the die grinder, adjust the collets or change the mounted stones or mounted burrs unless the air supply and air hose is
disconnected from the die grinder.
3. Only personnel trained in the correct methods to adjust collets and change mounted stones and mounted burrs should conduct these
operations.
4. Always ensure that you are aware of the direction of the sparks being created by the grinding operation and ensure that the sparks are
not directed toward the operator or other persons in the area.
5. Never use a die grinder close to any explosive or flammable materials or air conditioners.
6. Only use mounted stones or carbide burrs that have the correct spindle diameter that matches the original collet size provided by the die
grinder manufacturer.
7. Particular care must be taken not to use metric size mounted stones and mounted burrs with die grinders that have imperial size collets,
or use imperial mounted stones and mounted burrs with die grinders that have metric collets.
Specifications
Vibration Level (m/sec2): 2.05
Model
UT8728S
Motor Motor
(HP)
(kW)
0.9
0.65
Max. Wheel
Dia. (in.)
2&quot;
Vibration Level (m/sec2): 1.98
Model
UT8728SE
Motor Motor
(HP)
(kW)
0.9
0.65
Max. Wheel
Dia. (in.)
2&quot;
Noise Level (dBA): 82.92
Speed
(RPM)
Exhaust
22,000
Rear
Collet Size (in.)
1/4&quot;
Weight (lb.)
2.52
Weight
(Kg)
1.14
Length (in.)
6.10
Length (mm)
155
Rec.
Pressure
90 psi-6.2 bar
Air inlet
(NPT)
1/4&quot;
Rec. Hose
(I.D. in.)
3/8&quot;
Air Cons Av. Air Cons
(cfm)
(cfm)
22
5.5
Weight
(Kg)
1.51
Length (in.)
12.00
Length (mm)
305
Rec.
Pressure
90 psi-6.2 bar
Air inlet
(NPT)
1/4&quot;
Rec. Hose
(I.D. in.)
3/8&quot;
Air Cons Av. Air Cons
(cfm)
(cfm)
22
5.5
Noise Level (dBA): 83.22
Speed
(RPM)
Exhaust
22,000
Rear
Collet Size (in.)
1/4&quot;
Weight (lb.)
3.34
FLORIDA-PNEUMATIC.COM
Please contact 1-800-356-3392 for further assistance.
Installation
1 Cleaning the air hose
□□ A 3/8&quot; air hose is required, with a maximum length of 25 ft.
□□ Clean the air hose of accumulated dust and moisture
before connecting it to the air supply.
NOTE: If a longer air hose is required, connect a 1/2&quot; air
hose to the 3/8&quot; air hose to ensure the die grinder has the
necessary air supply.
Recommended Air Line Set-Up
Part
Description
A
Air Tool
B
Quick Plug
C
Quick Coupler
D
Air Hose
E
In-line Regulator
F
In-line Lubricator
G
In-line Filter
H
Air Compressor
Maintenance
Ensure the air line is shut-off and drained of air before removing this tool for service or changing sockets. This will prevent the tool from
operating if the throttle is accidentally engaged.
LUBRICATION
□□ An in-line filter-regulator-lubricator is recommended as it increases tool life and keeps the tool in sustained operation.
□□ Regularly check and fill the in-line lubricator with air tool oil. Avoid using excessive amounts of oil.
□□ Adjust the in-line lubricator by placing a sheet of paper next to the tool’s exhaust ports and holding the throttle open approximately 30
seconds. The lubricator is properly set when a light stain of oil collects on the paper.
□□ If it is necessary to store the tool for an extended period of time (overnight, weekend, etc.), generously lubricate the tool through the air
inlet. Run the tool for approximately 30 seconds to ensure the oil is evenly distributed throughout the tool. Store the tool in a clean and
dry environment.
□□ Recommended lubricants: Air tool oil or any other high grade turbine oil containing moisture absorbent, rust inhibitors, metal wetting
agents, and an EP (extreme pressure) additive.
Universal Tool a Division of Florida-Pneumatic Manufacturing Corporation
851 Jupiter Park Lane, Jupiter FL 33458
Operation
1 Operating the die grinder
□□ This Die Grinder is designed to operate on 90 PSIG. Lower
pressure (below 90 PSIG) will reduce performance of
the tool. Higher air pressure (over 90 PSIG) raises the
performance of the tool beyond its rated capacity and
could cause serious damage to the tool and the user.
2 Installing the grinding stone
WARNING: Disconnect the tool from the air supply before
servicing or changing accessories.
WARNING: Always use ANSI approved grinding stones
with the rated tool RPM.
□□ Loosen the collet nut with the collet wrenches.
□□ Insert the grinding stone in the collet. If using a 1/8 in. collet
stone, an adapter (not included) must be inserted before
placing the stone into the tool.
□□ Tighten the collet nut with the collet wrenches.
3 Removing the grinding stone
WARNING: Disconnect the tool from the air supply before
servicing or changing accessories.
□□ Loosen the collet nut with the collet wrenches.
□□ Pull the grinding stone out and tighten the collet nut with the
collet wrenches.
4 Grinding and deburring
WARNING: You must wear the ANSI approved eye
protection during the operation; failure to follow this this may
result in serious injury or damage to the operator.
WARNING: Hearing protection is strongly recommended. A
protective respirator is recommended.
□□ Connect the die grinder to the air supply.
□□ This tool features the safety lock-off mechanism.
□□ Operate the tool by disengaging the lock-off mechanism
and depressing the throttle lever to run the tool for
grinding or deburring.
FLORIDA-PNEUMATIC.COM
Please contact 1-800-356-3392 for further assistance.
Troubleshooting
Problem
Possible Cause
Solution
The tool runs slowly or will not
operate.
There is grit or gum in the tool.
□□ Flush the tool with air tool oil or gum solvent.
The tool is out of oil.
□□ Lubricate the tool according to the lubrication
instructions in this manual.
The air pressure is low.
□□ Adjust the regulator on the tool to the
maximum setting.
□□ Adjust the compressor regulator to the tool’s
maximum setting of 90 psi.
The air hose leaks.
□□ Tighten and seal the hose fittings with pipe
thread tape if leaks are found.
The air pressure drops.
□□ Ensure the hose is the proper size. Long
hoses or tools using large volumes of air may
require a hose with an I.D. of &frac12;&quot; or larger
depending on the total length of the hose.
□□ Do not use a multiple number of hoses
connected together with a quick connect
fitting. This causes additional pressure drops
and reduces the tool power. Directly connect
the hoses together.
There is moisture blowing out
of the tool’s exhaust.
There is a worn rotor blade in the motor.
□□ Replace the rotor blade.
There is a worn ball bearing in the motor.
□□ Remove and inspect the bearing for rust, dirt,
and grit. Replace or clean and grease the
bearing with bearing grease.
There is water in the tank.
□□ Drain the tank. (See the air compressor
manual for instructions.) Lubricate the tool
and run it until water is not evident. Lubricate
the tool again and run for 1-2 seconds.
Warranty
Limited Warranty: Universal Tool warrants its tools to be free from defects in material and workmanship for one year from the date of
purchase. This warranty does not apply to tools which have been abused, misused, modified or repaired by someone other than Universal
Tool or its authorized service centers. If a UT tool proves defective in material or workmanship within one year after purchase, return
it to any authorized service center or Universal Tool freight prepaid. Please enclose your name, address and adequate proof of date of
purchase and a short description of the defect. Universal Tool will,at its option, repair or replace defective tools free of charge. Repairs or
replacements are warranted as described above for the remainder of the original warranty period. Universal Tool's sole liability and your
exclusive remedy under this warranty is limited to repair or replacement of the defective tool.
There are no other warranties expressed or implied and Universal Tool shall not be liable for incidental, consequential or special damages,
or any other damages,costs or expenses excepting only the cost or expense of repair or replacement as described above.
Universal Tool a Division of Florida-Pneumatic Manufacturing Corporation
851 Jupiter Park Lane, Jupiter FL 33458
Service Parts / Exploded View Drawing
UT8728S
UT8728SE
Ref Part Number Description
#
Qty
Ref Part Number
#
Description
Qty.
1
9872801
MOTOR HOUSING
1
17
9872817
END PLATE-REAR
1
2
9872802B-E
THROTTLE LEVER ASSEMBLY
W/LASER ETCHED
1
18
9872818
ROTOR
1
3
9308003
THROTTLE LEVER PIN
1
19
9389517
ROTOR BLADE
3
4
9308004
THROTTLE VALVE O-RING
1
20
9389521N
CYLINDER
1
THROTTLE VALVE O-RING
1
21
9389521A
CYLINDER PIN 1
1
4-1 9308004-1
5
9872805
THROTTLE VALVE ASSEMBLY
1
22
9872822
CYLINDER PIN 2
1
6
9872806
THROTTLE VALVE SPRING
1
23
9872823
FRONT PLATE
1
7
9872807
AIR REGULATOR
1
24
9389735
SPACER
1
8
9OR-1898
AIR REGULATOR O-RING
2
25
9BR6ZZ
BALL BEARING
3
9
9OR7718
VALVE CAP O-RING
1
26
9872830
MOTOR CLAMP
1
10
9308010
THROTTLE VALVE CAP
1
27
9872827
COLLET BODY
1
11
9872811
DEFLECTOR SILENCER
1
28
9308024
1/4&quot; COLLET
1
12
9633811
DEFLECTOR O-RING
1
29
9872829
COLLET NUT
1
13
9872813
DEFLECTOR
1
30
9308026
COLLET WRENCH
2
14
9872814
AIR INLET
1
31
9872831
EXTENSION SPINDLE
(UT8728SE)
1
15
9389516
RETAINER
1
32
9872832
EXTENSION FRONT HOUSING
(UT728SE)
1
16
9R4ZZ
BALL BEARING
1
FLORIDA-PNEUMATIC.COM
Please contact 1-800-356-3392 for further assistance.
™
Universal Tool
Questions, problems, missing parts?
Call Customer Service
8 a.m.-5 p.m., EST, Monday-Friday
1-800-356-3392
FLORIDA-PNEUMATIC.COM
Retain this manual for future use.
Universal Tool a Division of Florida-Pneumatic Manufacturing Corporation
851 Jupiter Park Lane, Jupiter FL 33458
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Key Features

Powerful motor
Durable construction
Safety lock-off mechanism
Collet size: 1/4"
Max. Wheel Dia.: 2"
Rear exhaust
Recommended air pressure: 90 psi
Lightweight and ergonomic design
Easy to operate and maintain

Frequently Answers and Questions

How do I change the grinding stone?

Disconnect the tool from the air supply. Loosen the collet nut with the collet wrenches. Insert the grinding stone in the collet. Tighten the collet nut with the collet wrenches.

What is the recommended air pressure for this tool?

The recommended air pressure for this tool is 90 psi.

How do I lubricate the tool?

Use air tool oil or any other high-grade turbine oil containing moisture absorbent, rust inhibitors, metal wetting agents, and an EP (extreme pressure) additive. Generously lubricate the tool through the air inlet. Run the tool for approximately 30 seconds to ensure the oil is evenly distributed throughout the tool.