3M 28337 - User Manual

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3M Two Hand 6 in. ROS 1 Revision 052209

Intended Use

RANDOM ORBITAL TWO HAND SANDER INSTRUCTION MANUAL

12,000 RPM 150 mm (6 in)

Important Safety Information

Please read, understand and follow all safety information contained in these instructions prior to the use of this tool. Retain these

instructions for future reference.

This pneumatic tool is intended for use in industrial locations, and used only by skilled, trained professionals in accordance with the

instructions in this manual. This pneumatic tool is designed to be used with a disc pad and appropriate abrasive for sanding metals,

wood, stone, plastics and other materials. It should only be used for such sanding applications and within its marked capacity and

ratings. Only accessories speciﬁcally recommended by 3M should be used with this tool. Use in any other manner or with other acces-

sories could lead to unsafe operating conditions.

Do not operate tool in water or in an excessively wet application.

Do not use disc pads that have a Max RPM or Max OPM less than 12,000. Never use disc pads that have a weight and/or size different

than what the tool was speciﬁcally designed for.

To reduce the risks associated with impact from abrasive product, disc pad or tool breakup, sharp edges, hazardous pres-

sure, rupture, vibration and noise:

• Read, understand and follow the safety information contained in these instructions prior to the use of this tool. Retain these

instructions for future reference.

• Only personnel who are properly trained should be allowed to service this tool.

• Practice safety requirements. Work alert, have proper attire, and do not operate tool under the inﬂuence of alcohol or drugs.

• Operators and other personnel must always wear protection for eyes, ears, and respiratory protection when in the work area or

while operating this product. Follow your employer’s safety policy for PPE’s and/or ANSI Z87.1 or local/national standards for

eyewear and other personal protective equipment requirements.

• Wear protective apparel, taking into consideration the type of work being done.

• Never exceed marked maximum input pressure (90psi / .62Mpa / 6.2Bars).

• Proper eye protection must be worn at all times.

• Tool shall not be operated in the presence of bystanders.

• If you notice any abnormal noise or vibration when operating the product, immediately discontinue its use and inspect for worn or

damaged components. Correct or replace the suspect component. If abnormal noise or vibration still exists, return the tool to 3M

for repair or replacement. Refer to warranty instructions.

• Never operate this tool without all safety features in place and in proper working order.

• Never over-ride or disable the safety features of the start-stop control such that it is in the on position.

• Make sure the tool is disconnected from its air source before servicing, inspecting, maintaining, cleaning, and before changing

abrasive product.

• Prior to use, inspect abrasive product and accessories for possible damage. If damaged, replace with new abrasive product and

accessories available from 3M.

• Only use accessories supplied or recommended by 3M.

• Never allow this tool to be used by children or other untrained people.

• Do not leave an unattended tool connected to air source.

WARNING

Explanation of Signal Word Consequences

Indicates a potentially hazardous situation which, if not avoided, may result in death or serious injury

and/or property damage.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate

injury and/or property damage.

WARNING:

CAUTION:

Original Instructions

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Summary

Safety and Usage Guidelines

Important Safety Information

Read, understand, and follow all safety information before using the tool. Retain instructions for reference.

Intended Use of the Tool

Pneumatic tool for industrial use by skilled professionals for sanding metals, wood, stone, plastics.

Signal Word Consequences

Explains the meaning of WARNING (death/serious injury) and CAUTION (minor/moderate injury).

Operational Safety Precautions

Lists critical safety measures for preventing injury from impact, pressure, rupture, vibration, and noise.

Specific Hazard Risk Reduction

Vibration and Noise Safety

Reduces risks from vibration-induced injury and loud noise by wearing PPE and stopping work if discomfort occurs.

Fire, Explosion, and Dust Hazards

Avoids fire/explosion in explosive atmospheres and dust hazards by using proper protection and MSDS.

Electrical and Mechanical Hazards

Addresses risks from electrical contact, skin abrasion, cuts, entrapment, and whipping hazards.

Accessory and Tool Safety

Ensures safety from flying parts, secure attachment, and preventing unintentional tool activation.

Product Configuration and Specifications

Sander Specifications

Details model number, orbit type, pad size, weight, dimensions, noise, and vibration levels.

Operating Air Supply Requirements

Specifies recommended airline size, hose length, and required air pressure for optimal operation.

Operating and Maintenance Instructions

Tool Operation Guidance

Instructions for operating the tool with a secure grip, proper footing, and awareness of torque reaction.

Air Supply and Lubrication

Details connecting to air supply, using FRL units, and manual lubrication procedures.

Advanced Safety and Procedures

Detailed Safety Precautions

Covers tool RPM, abrasive attachment, operator attire, workpiece securing, and tool handling.

3 M Disc Pad Information

Details premium disc pads designed for 3M sanders, including material and construction.

Disc Pad Mounting and Removal

Step-by-step guide for safely removing old and mounting new disc pads to the sander.

Accessory Mounting Procedures

Instructions for mounting optional accessories like tool hangers and side handles.

Product Use, Warranty, and Compliance

Product Use and User Responsibility

User must evaluate product fit for purpose and operate according to manual for warranty coverage.

Warranty and Limited Remedy

Covers tool warranty against defects, limitations, and user responsibilities for maintenance.

EC Declaration of Conformity

Declares compliance with essential health and safety requirements and relevant standards.

Summary

Safety and Usage Guidelines

Important Safety Information

Read, understand, and follow all safety information before using the tool. Retain instructions for reference.

Intended Use of the Tool

Pneumatic tool for industrial use by skilled professionals for sanding metals, wood, stone, plastics.

Signal Word Consequences

Explains the meaning of WARNING (death/serious injury) and CAUTION (minor/moderate injury).

Operational Safety Precautions

Lists critical safety measures for preventing injury from impact, pressure, rupture, vibration, and noise.

Specific Hazard Risk Reduction

Vibration and Noise Safety

Reduces risks from vibration-induced injury and loud noise by wearing PPE and stopping work if discomfort occurs.

Fire, Explosion, and Dust Hazards

Avoids fire/explosion in explosive atmospheres and dust hazards by using proper protection and MSDS.

Electrical and Mechanical Hazards

Addresses risks from electrical contact, skin abrasion, cuts, entrapment, and whipping hazards.

Accessory and Tool Safety

Ensures safety from flying parts, secure attachment, and preventing unintentional tool activation.

Product Configuration and Specifications

Sander Specifications

Details model number, orbit type, pad size, weight, dimensions, noise, and vibration levels.

Operating Air Supply Requirements

Specifies recommended airline size, hose length, and required air pressure for optimal operation.

Operating and Maintenance Instructions

Tool Operation Guidance

Instructions for operating the tool with a secure grip, proper footing, and awareness of torque reaction.

Air Supply and Lubrication

Details connecting to air supply, using FRL units, and manual lubrication procedures.

Advanced Safety and Procedures

Detailed Safety Precautions

Covers tool RPM, abrasive attachment, operator attire, workpiece securing, and tool handling.

3 M Disc Pad Information

Details premium disc pads designed for 3M sanders, including material and construction.

Disc Pad Mounting and Removal

Step-by-step guide for safely removing old and mounting new disc pads to the sander.

Accessory Mounting Procedures

Instructions for mounting optional accessories like tool hangers and side handles.

Product Use, Warranty, and Compliance

Product Use and User Responsibility

User must evaluate product fit for purpose and operate according to manual for warranty coverage.

Warranty and Limited Remedy

Covers tool warranty against defects, limitations, and user responsibilities for maintenance.

EC Declaration of Conformity

Declares compliance with essential health and safety requirements and relevant standards.

This document describes the 3M Random Orbital Two Hand Sander, an air-powered tool designed for industrial sanding applications. It is intended for use by skilled, trained professionals and is suitable for sanding metals, wood, stone, plastics, and other materials within its marked capacity and ratings.

Function Description

The 3M Random Orbital Two Hand Sander is a pneumatic tool that utilizes a disc pad and appropriate abrasive to perform sanding operations. Its random orbital motion helps to minimize swirl marks and achieve a smooth finish. The two-hand design provides enhanced control and stability during operation. The tool is designed to be connected to an air supply and can be used with a vacuum system for dust collection, improving workplace cleanliness and safety by reducing exposure to generated dust.

Important Technical Specifications

The specific model covered in this manual is the 28337.

Orbit: 10 mm (3/8 in.)
Vacuum Type: Central Vacuum
Pad Size: 150 mm (6 in.)
Product Net Weight: 1.32 kg (2.90 lb)
Height: 112.6 mm (4.43 in.)
Length: 328.3 mm (12.93 in.)
Noise Level: 81 dBA Pressure (89 dBA Power)
Vibration Level: 3.4 m/s² (11.2 ft/s²)
Uncertainty K: 0.887 m/s²
Maximum Input Pressure: 90 psi (0.62 MPa / 6.2 Bars)
Maximum RPM: 12,000 RPM
Recommended Airline Size (Minimum): 10 mm (3/8 in.)
Recommended Maximum Hose Length: 8 meters (25 feet)
Maximum Working Air Pressure: 6.2 bar (90 psig)
Vacuum Hose Fittings: All vacuum machines use Ø 28 mm (1 in.) vacuum hose fittings.

The tool is designed to operate at a measured air pressure of 6.2 bar (90 psig) when the throttle lever is fully depressed. It can be run at lower pressures, which will reduce performance, but should never exceed the maximum recommended pressure.

Usage Features

Two-Hand Design: Provides enhanced control and stability for the operator.
Random Orbital Motion: Helps to minimize swirl marks and achieve a smooth finish on various materials.
Vacuum Compatibility: Designed for use with central vacuum systems, utilizing Ø 28 mm (1 in.) vacuum hose fittings for effective dust capture. This feature is crucial for reducing exposure to hazardous dust generated during sanding.
Accessory Compatibility: Only accessories specifically recommended by 3M should be used with this tool. This includes disc pads, which must have a Max RPM or Max OPM of at least 12,000 and match the tool's designed weight and size.
Adjustable Orbit Throttle Lever: The tool offers options for 5.0 mm (3/16 in.) or 10.0 mm (3/8 in.) orbit throttle levers, allowing for customization based on application needs.
Optional Side-Handle: An optional side-handle can be attached to the tool for additional grip and control. It directly replaces an existing M8 threaded plug and spacer ring assembly.
Safety Features: Includes safety features such as a start-stop control. Operators are warned not to override or disable these features. The tool should always be disconnected from its air source before servicing or changing abrasive products.
Disc Pad Mounting: The manual provides clear instructions for removing and mounting disc pads, emphasizing the importance of securely tightening the disc pad to prevent damage or injury. A wrench supplied with the tool is used to secure the sander spindle while turning the disc pad.
Air Supply Requirements: Requires a clean, lubricated air supply. The use of an air filter, regulator, and lubricator (FRL) is strongly recommended to ensure clean, lubricated air at the correct pressure.

Maintenance Features

Regular Lubrication: If an FRL is not used, the tool should be manually lubricated daily or when performance decreases. This involves disconnecting the airline and adding 2-3 drops of suitable pneumatic motor lubricating oil (e.g., 3M™ Air Tool Lubricant PN 20451) into the hose end (inlet) of the tool.
Inspection of Components: Regular inspection of abrasive products, accessories, hoses, and fittings for damage or wear is crucial. Damaged components should be replaced with new ones available from 3M.
Abnormal Noise/Vibration: If abnormal noise or vibration occurs, the tool should be immediately discontinued from use and inspected for worn or damaged components. If the issue persists, the tool should be returned to 3M for repair or replacement.
Tool RPM Check: The tool's RPM should be checked regularly to ensure proper operating speed.
Storage: When not in use, the tool should be stored in a clean, dry, debris-free environment.
Servicing: Only properly trained personnel should service the tool. After servicing or rebuilding, it's important to verify that the maximum tool RPM is not exceeded and that there is no excessive vibration.
Disposal: The tool should be recycled or disposed of according to local, state, and federal regulations.
Warranty and Repair: 3M warrants the tool against defects in workmanship and materials for one year from the purchase date under normal operating conditions. Repair services are available through 3M or authorized representatives after the warranty expires.