FP-3751R
1/4” Die Grinder
DIE GRINDERS
General Safety Information & Replacement Parts
TABLE OF CONTENTS
General Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Air Compressor and Air Tool Safety . . . . . . . . . . . . . . . . . . . 2-3
Tool Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Maintenance / Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
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.
FP Air Tools - 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.
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.
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
Description
1/4” Die Grinder
Model No.
FP-3751R
Free
Speed
RPM
Collet/
Chuck Size
(in.)
Motor
HP
20,000 1/4 1/3
Weight
(lbs.)
1.5
Length
(in.)
5-1/2
Air
Inlet
(NPT)
1/4
Rec. Hose
Size
(in.)
3/8 I.D.
Rec.
Air
Pres.
90 psi
Air
Cons.
(cfm)
4
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
H
Part Description
A Air Tool
B
C
D
E
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.
FP Air Tools - Florida-Pneumatic Manufacturing Corporation
851 Jupiter Park Lane, Jupiter FL 33458
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.
Limited Warranty
Florida Pneumatic Manufacturing Corporation warrants its tools to be free from defects in materials and workmanship. Tools thought to be defective should be returned to the factory, or an authorized service center, transportation charges prepaid, for examination and consequent repair or replacement. This warranty does not cover damage to tools arising from alteration, abuse, or use for other than their intended purpose and does not cover any repairs or replacement made by anyone other than Florida Pneumatic Manufacturing Corporation or its authorized repair stations.
The duration of the Warranty and any other Warranty including, but not limited to, any implied Warranty of merchantability is expressly limited to two years, beginning from the date of the delivery to the original user. The obligation of Florida Pneumatic Manufacturing
Corporation under any Warranty, express or implied, is limited solely to the repair or replacement at its factory or authorized repair station of any part which shall prove defective.
FLORIDA-PNEUMATIC.COM
Please contact 1-800-356-3392 for further assistance.
Service Parts / Exploded View Drawing
21
Reference
Number
1
2
3
4
5
6
7
8
9
10
11
Part Number Description
106120
106280
118010
120480
115170
111230
260348
120490
120510
81010183
113190
Hose Adapter
Muffler Disk
Valve Spring
Tip Valve
Washer
Lever Spring Pin
Handle Assembly
(Includes Washer -
115170)
Valve Pin
Lever Assembly
Rear Bearing
Rear End Plate
FP Air Tools - Florida-Pneumatic Manufacturing Corporation
851 Jupiter Park Lane, Jupiter FL 33458
Qty .
1
1
1
1
1
1
1
1
1
1
1
Reference
Number
12
13
14
15
16
17
21
Part Number Description
103092
116162
116260
113200
8729113
108120
5910
Cage
Rotor
Rotor Vanes
Front End Plate
Front Bearing
Lock Nut
Collet Assembly
(Includes Ref. 18, 19, 20)
18
19
20
107310
5909
5901
Collet Body
Collet Insert
Collet Nut
Qty .
1
1
1
1
1
4
1
1
1
1
Not Shown 266040
Not Shown 120500
Comfort Grip
Pro Vale Pin Bushing
1
1
Reference
Number
1
2
3
4
5
6
7
8
9
10
11
Part Number Description
106120
106280
118010
120480
115170
111230
260348
120490
120510
81010183
113190
Hose Adapter
Muffler Disk
Valve Spring
Tip Valve
Washer
Lever Spring Pin
Handle Assembly
(Includes Washer -
115170)
Valve Pin
Lever Assembly
Rear Bearing
Rear End Plate
Qty .
1
1
1
1
1
1
1
1
1
1
1
Reference
Number
12
13
14
15
16
17
21
Part Number Description
103092
116162
116260
113200
8729113
108120
5910
Cage
Rotor
Rotor Vanes
Front End Plate
Front Bearing
Lock Nut
Collet Assembly
(Includes Ref. 18, 19, 20)
18
19
20
107310
5909
5901
Collet Body
Collet Insert
Collet Nut
Qty .
1
1
1
1
1
4
1
1
1
1
Not Shown 266040
Not Shown 120500
Comfort Grip
Pro Vale Pin Bushing
1
1
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.
FLORIDA-PNEUMATIC.COM
Please contact 1-800-356-3392 for further assistance.
