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3M 1

1

/

4

 in. Mini Orbital 

Revision 053008

Intended Use

MINI RANDOM ORBITAL SANDER MANUAL
8,000 RPM 1

1

/

4

 in (32 mm)

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 product 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 backup pad and appropriate abrasive for sanding small defects in 
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 
accessories could lead to unsafe operating conditions.

Damp application using water or water-solvent mixture is acceptable, but only when care is exercised to avoid injury due to splashing of 
liquid.  Also, careful cleaning of tool is necessary following each use of product in damp application.

Do not use back-up pads that have a Max RPM or Max OPM less than 8,000.  Never use back-up pads that have a weight and/or size 
different than what the tool was specifically designed for.

To reduce the risk of all hazards associated with this product:
•  Read, understand and follow the safety information contained in these instructions prior to the use of this tool.
•  Only personnel who are properly trained should be allowed to service this tool.
•  Always wear protection for eyes, ears and respiratory protection while operating this product.  Follow ANSI Z87.1 or  

local/national standards for eyewear and other personal protective equipment requirements.

•  Practice safety requirements.  Work alert, wear proper attire; never operate tools under the influence of alcohol or drugs or in a 

manner inconsistent with its intended use.

To reduce the risks associated with accessory rupture or disintegration:
•  Never exceed marked maximum input pressure (90psi / .62Mpa / 6.2Bars).
•  Use care in attaching back-up pad; follow the instructions to ensure that it is securely attached to the tool before use.
•  Never free spin the tool or otherwise allow it to be started unintentionally; particularly during damp application.
•  Never point this product in the direction of yourself or another person.
To reduce the risk associated with loud noise:
•  Immediately discontinue use of product if its noise reduction muffler system has been damaged or is otherwise not functioning 

properly.  Have product repaired before placing back into use.

To reduce the risk associated with vibration emissions during use of product:
•  If any physical hand/wrist discomfort is experienced, stop work promptly and seek medical attention. Hand, wrist and arm injury 

may result from repetitive work, motion and overexposure to vibration.

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:

Summary of Contents for 20244

Page 1: ...l who are properly trained should be allowed to service this tool Always wear protection for eyes ears and respiratory protection while operating this product Follow ANSI Z87 1 or local national standards for eyewear and other personal protective equipment requirements Practice safety requirements Work alert wear proper attire never operate tools under the influence of alcohol or drugs or in a man...

Page 2: ...w this tool to contact electrical power sources as the tool is not insulated against electrical shock Do not operate the tool in or near explosive materials such as flammable liquids gases or excessive airborne dust The tool abrasives can create sparks when working material resulting in the ignition of the flammable dust or fumes NOTES DWG SCALE 1 1 5 4 3 2 1 7 6 8 9 10 12 13 14 15 16 11 17 18 20 ...

Page 3: ...21 GRIP 2 3 4 in 1 18 3MB0320 GRIP 2 5 in OPT 18 3MB0322 GRIP 3 in OPT 19 3MA1872 MINI HOUSING 1 20 3MA0031 LEVER SPRING PIN 1 21 3MA0015 VALVE SLEEVE 1 22 3MA0584 INTERNAL MUFFLER 1 23 3MA0068 MUFFLER INSERT 1 24 3MA0166 MUFFLER HOUSING 1 25 3MA0013 INLET BUSHING ASSEMBLY 1 26 3MA0014 VALVE SPRING 1 27 3MA0007 VALVE 1 28 3MA0009 VALVE SEAT 1 29 3MA0008 VALVE STEM ASSEMBLY 1 30 3MA0043 O RING 1 31...

Page 4: ...ded that the air pressure at the tool be 6 2 bar 90 psig while the tool is running so the maximum RPM is not exceeded The tool can be run at lower pressures but should never be run higher than 6 2 bar 90 psig If run at lower pressure the performance of the tool is reduced Declared noise levels measurements carried out in accordance with standard EN ISO 15744 2002 Declared vibration levels in accor...

Page 5: ...upply immedi ately to avoid contact with moving tool parts 15 Keep hands clear of the spinning pad during use 16 If the tool appears to malfunction remove from use immediately and arrange for service and repair 17 Do not allow the tool to free spin without taking precautions to protect any persons or objects from the loss of the abrasive or pad ruptures 18 Immediately release the start handle in t...

Page 6: ...is fit for a particular purpose and suitable for user s application User must operate the tool in accordance with all applicable operating instructions safety precautions and other procedures stated in the operating manual to be entitled to warranty coverage 3M shall have no obligation to repair or replace any tool or part that fails due to normal wear inadequate or improper maintenance inadequate...

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