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3M™ 1 1/4 in Mini Random Orbital Sander 

Revision 040610

Parts Page

Intended Use

MINI RANDOM ORBITAL SANDER  
INSTRUCTION MANUAL
32 mm (1 1/4 in) 8,000 RPM

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 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 tool in damp application.
Do not use disc pads that have a Max RPM or Max OPM less than the tool Max RPM or Max OPM rating. 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 

pressure, 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 tools 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 tool, 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.

• Immediately discontinue use of tool if its noise reduction muffler system has been damaged or is otherwise not functioning 

properly. Have tool repaired before placing back into use.

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

WARNING

Summary of Contents for MINI RANDOM ORBITAL SANDER

Page 1: ... 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 exce...

Page 2: ...he flammable dust or fumes Refer to MSDS of material being worked as to potential for creating fire or explosion hazard To reduce the risks associated with hazardous dust ingestion or eye skin exposure Use appropriate respiratory and skin protection or local exhaust as stated in the MSDS of the material being worked on To reduce the risks associated with hazardous voltage Do not allow this tool to...

Page 3: ... RETAINING SLEEVE A0120 28130 1 17 LEVER A1873 28306 1 18 GRIP 2 in 20342 20342 1 18 GRIP 2 in 20343 20343 OPT 18 GRIP 3 in 20344 20344 OPT 19 MINI HOUSING A1872 28307 1 20 LEVER SPRING PIN A0031 28109 1 21 VALVE SLEEVE A0015 28102 1 22 INLET BUSHING ASSY A0013 28100 1 23 VALVE SPRING A0014 28101 1 24 VALVE A0007 28096 1 25 VALVE SEAT A0009 28098 1 26 VALVE STEM ASSY A0008 28097 1 27 9 0 mm x 1 5 ...

Page 4: ...t is recommended to use an approved 10 mm 3 8 in x 8 m 25 ft maximum length airline Connect the tool to the air supply as shown in Figure 1 Do not connect the tool to the airline system without an easily accessible air shut off valve It is strongly recommended that an air filter regulator and lubricator FRL be used as shown in Figure 1as this will supply clean lubricated air at the correct pressur...

Page 5: ...care to avoid entanglement with the moving parts of the tool with clothing ties hair cleaning rags or loose hanging objects If entangled stop air supply immediately to avoid contact with moving tool parts 18 Keep hands clear of the spinning pad during use 19 If the tool appears to malfunction remove from use immediately and arrange for service and repair 20 Immediately release the start handle in ...

Page 6: ...ser 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 cleaning nonlubrication improper operating environment improper util...

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