™
Universal Tool
UT8728 / UT8729
DIE GRINDER SERIES
DIE GRINDERS
General Safety Information & Replacement Parts
UT8728
Die Grinder
UT8728E
Extended Die Grinder
UT8729-12
UT8729-18
Angle Die Grinder
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
Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
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 & 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
1. Risk of Bursting. Do not adjust the regulator to result in output pressure greater than the marked maximum pressure of this air tool.
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.
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
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 paint, crystalline silica from bricks and cement and other masonry products, arsenic and chromium from chemically-treated lumber.
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.
1. Only use mounted grinding stones or mounted carbide burrs that meet ANSI standards, ISO standards or both.
2. Always use accessories with an RPM rating that meets or exceeds the tool RPM rating.
3. 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.
4. Only personnel trained in the correct methods to adjust collets and change mounted stones and mounted burrs should conduct these operations.
5. 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.
6. Never use a die grinder close to any explosive or flammable materials or air conditioners.
7. 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.
8. 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
Model
Motor Motor Max. Wheel Speed
(HP) (kW) Dia. (in.) (RPM) Exhaust
Collet Size Weight
(in.) (lb.)
Weight
(Kg)
Length
(in.)
Length
(mm)
Rec.
Pressure
Air inlet Rec. Hose Air Cons Av. Air Cons
(NPT) (I.D. in.) (cfm) (cfm)
UT8728
Vibration Level (m/sec2): 1.49
0.9 0.65 2" 22,000
Vibration Level (m/sec2): 2.12
UT8728E 0.9 0.65 2" 22,000
Noise Level (dBA): 83.05
Rear 1/4" 1.5
Noise Level (dBA): 83.7
Rear 1/4" 2.4
0.7
1.1
6.10
12.00
155
305
90 psi-6.2 bar 1/4"
90 psi-6.2 bar 1/4"
3/8"
3/8"
22
22
5.5
5.5
Vibration Level (m/sec2): 2.14
UT8729-18 0.9 0.65 2" 18,000
Noise Level (dBA): 83.41
Rear 1/4" 1.6 0.7 7.40 188 90 psi-6.2 bar 1/4" 3/8" 22 5.5
Vibration Level (m/sec2): 2.09
UT8729-12 0.9 0.65 3" 12,000
Noise Level (dBA): 82.55
Rear 1/4" 1.6 0.7 7.40 188 90 psi-6.2 bar 1/4" 3/8" 22 5.5
FLORIDA-PNEUMATIC.COM
Please contact 1-800-356-3392 for further assistance.
Installation
1
Cleaning the air hose
□ A 3/8" 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" air hose to the 3/8" air hose to ensure the die grinder has the necessary air supply.
Recommended Air Line Set-Up
F
G
D
E
H
Part Description
A Air Tool
B
C
Quick Plug
Quick Coupler
Air Hose
In-line Regulator
In-line Lubricator
In-line Filter
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 wrench.
□ 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 wrench.
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 wrench.
□ Pull the grinding stone out and tighten the collet nut with the collet wrench.
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
The tool runs slowly or will not operate.
Possible Cause
There is grit or gum in the tool.
The tool is out of oil.
The air pressure is low.
The air hose leaks.
The air pressure drops.
There is a worn rotor blade in the motor.
There is a worn ball bearing in the motor.
There is moisture blowing out of the tool’s exhaust.
There is water in the tank.
Solution
□ Flush the tool with air tool oil or gum solvent.
□ Lubricate the tool according to the lubrication instructions in this manual.
□ Adjust the regulator on the tool to the maximum setting.
□ Adjust the compressor regulator to the tool’s maximum setting of 90 psi.
□ Tighten and seal the hose fittings with pipe thread tape if leaks are found.
□ 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 ½" 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.
□ Replace the rotor blade.
□ Remove and inspect the bearing for rust, dirt, and grit. Replace or clean and grease the bearing with bearing grease.
□ 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
UT8728
Die Grinder
FLORIDA-PNEUMATIC.COM
Please contact 1-800-356-3392 for further assistance.
Service Parts / Exploded View Drawing
UT8728E
Extended Die Grinder
Universal Tool a Division of Florida Pneumatic Manufacturing Corporation
851 Jupiter Park Lane, Jupiter FL 33458
Service Parts / Exploded View Drawing
UT8729-12
Angle Die Grinder
Ref
#
Part Number Description
1 9872801 MOTOR HOUSING
2 9872802B-12 THROTTLE LEVER ASSEMBLY
W/LASER ETCHED
3 9308003
4 9308004
4-1 9308004-1
5 9872805
6 9872806
THROTTLE LEVER PIN
THROTTLE VALVE O-RING
THROTTLE VALVE O-RING
THROTTLE VALVE ASSEMBLY
THROTTLE VALVE SPRING
7 9872807
8 9OR-1898
9 9OR7718
10 9308010
11 9872811
12 9633811
13 9872813
14 9872814
15 9389516
16 9R4ZZ
17 9872817
18 9872918
19 9389517
20 9389521N
AIR REGULATOR
AIR REGULATOR O-RING
VALVE CAP O-RING
THROTTLE VALVE CAP
DEFLECTOR SILENCER
DEFLECTOR O-RING
DEFLECTOR
AIR INLET
RETAINER
BALL BEARING
END PLATE-REAR
ROTOR
ROTOR BLADE
CYLINDER
Qty
1
1
Ref
#
21
22
Part Number Description
9389521A
9872822
CYLINDER PIN 1
CYLINDER PIN 2
Qty .
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
3
1
31
32
33
28
29
30
34
35
36
37
23
24
25
26
27
38
39
37
38
39
9872923
9389735
9BR6ZZ
9872926
9872927
9308024
9872829
9308026
9872931
9872932-12 GEAR SET - 1
9872933
9872934
9B626ZZ
9872936-12
9R8ZZ
9872938
9872939
9R8ZZ
9872938
9872939
FRONT PLATE
SPACER
BALL BEARING
ANGLE HEAD CLAMP
ANGLE COLLET BODY
1/4" COLLET
COLLET NUT
COLLET WRENCH
ANGLE HEAD NUT
ANGLE HEAD - HEXAGON
GREASE FITTING
BALL BEARING
GEAR SET - 2
BALL BEARING
BEARING RETAINER
WOODRUFF KEY
BALL BEARING
BEARING RETAINER
WOODRUFF KEY
FLORIDA-PNEUMATIC.COM
Please contact 1-800-356-3392 for further assistance.
1
1
1
1
1
2
1
1
1
1
1
3
2
1
1
1
1
1
1
1
Service Parts / Exploded View Drawing
UT8729-18
Angle Die Grinder
Ref
#
Part Number
1 9872801
Description
MOTOR HOUSING
2 9872802B-18 THROTTLE LEVER ASSEMBLY
W/LASER ETCHED
3 9308003 THROTTLE LEVER PIN
4 9308004
4-1 9308004-1
5 9872805
6 9872806
7 9872807
8 9OR-1898
9 9OR7718
10 9308010
11 9872811
12 9633811
13 9872813
14 9872814
15 9389516
16 9R4ZZ
17 9872817
18 9872918
19 9389517
20 9389521N
THROTTLE VALVE O-RING
THROTTLE VALVE O-RING
THROTTLE VALVE ASSEMBLY
THROTTLE VALVE SPRING
AIR REGULATOR
AIR REGULATOR O-RING
VALVE CAP O-RING
THROTTLE VALVE CAP
DEFLECTOR SILENCER
DEFLECTOR O-RING
DEFLECTOR
AIR INLET
RETAINER
BALL BEARING
END PLATE-REAR
ROTOR
ROTOR BLADE
CYLINDER
Qty
1
1
1
1
1
1
1
1
3
1
2
1
1
1
1
1
1
1
1
1
1
Universal Tool a Division of Florida Pneumatic Manufacturing Corporation
851 Jupiter Park Lane, Jupiter FL 33458
38
39
37
38
39
34
35
36
37
27
28
29
30
23
24
25
26
31
32
33
Ref
#
21
22
Part Number
Description
9389521A CYLINDER PIN 1
9872822 CYLINDER PIN 2
9872923
9389735
9BR6ZZ
9872926
9872927
9308024
9872829
9308026
FRONT PLATE
SPACER
BALL BEARING
ANGLE HEAD CLAMP
ANGLE COLLET BODY
1/4" COLLET
COLLET NUT
COLLET WRENCH
9872931 ANGLE HEAD NUT
9872932-18 GEAR SET - 1
9872933 ANGLE HEAD - HEXAGON
9872934
9B626ZZ
GREASE FITTING
BALL BEARING
9872936-18 GEAR SET - 2
9R8ZZ BALL BEARING
9872938
9872939
9R8ZZ
9872938
9872939
BEARING RETAINER
WOODRUFF KEY
BALL BEARING
BEARING RETAINER
WOODRUFF KEY
Qty .
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
3
2
1
1
1
1
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.
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
