3M 51210 User Manual
RANDOM ORBITAL SANDER
INSTRUCTION MANUAL
127 mm (5 in) and 150 mm (6 in) 12,000 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.
Intended Use
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.
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 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.
Explanation of Signal Word Consequences
WARNING:
CAUTION:
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
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 inuence 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 mufer system has been damaged or is otherwise not functioning
properly. Have tool repaired before placing back into use.
3M™ 5 in & 6 in Random Orbital Sander 1 Revision 051210
Original Instructions
WARNING
To reduce the risks associated with vibration:
• If any physical hand/wrist discomfort is experienced, work should be stopped promptly to seek medical attention. Hand, wrist and
arm injury may result from repetitive work, motion and overexposure to vibration.
To reduce the risks associated with loud noise:
• Always wear hearing protection while operating this tool. Follow your employer’s safety policy or local/national standards for
personal protective equipment requirements.
To reduce the risks associated with fire or explosion:
• Do not operate the tool in explosive atmospheres, such as in the presence of ammable liquids, gases, or dust. The abrasives are
able to create sparks when working material, resulting in the ignition of the ammable dust or fumes.
• Refer to MSDS of material being worked as to potential for creating re 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 come into contact with electrical power sources as the tool is not insulated against electrical shock.
CAUTION
To reduce the risks associated with skin abrasion, burns, cuts, or entrapment:
• Keep hands, hair, and clothing away from the rotating part of the tool.
• Wear suitable protective gloves while operating tool.
• Do not touch the rotating parts during operation for any reason.
• Do not force tool or use excessive force when using tool.
To reduce the risks associated with whipping or hazardous pressure-rupture:
• Ensure supply hose is oil resistant and is properly rated for required working pressure.
• Do not use tools with loose or damaged air hoses or ttings.
• Be aware that incorrectly installed hoses and ttings might unexpectedly come loose at any time and create a whipping/impact
hazard.
To reduce the risks associated with fly off of abrasive product or parts:
• Use care in attaching abrasive product and disc pad; following the instructions to ensure that they are securely attached to the tool
before use.
• Never free spin the tool or otherwise allow it to be started unintentionally.
• Never point this product in the direction of yourself or another person, or start tool unintentionally.
• Never over-tighten accessory fasteners.
Parts Page
23
39
38
24
37
1
2
3
4
5
6
8
9
10
11
12
13
14
15
16
18
19
20
21
22
25
27
7
32
33
34
35
36
ITEM
26
29
TORQUE SETTING
in.-lbs. (Nm)
12 55 - 65 (6.2 - 7.3)
39 16 - 20 (1.8 - 2.3)
43 60 - 72 (6.8 - 8.1)
45 36 - 48 (4.1 - 5.2)
58 30 - 35 (3.4 - 3.9)
40
28
30
31
54
43
42
41
47
51
TO
INLET
57
58
45
44
46
48
64
52
55
62
INLET
TO
56
50
TO VACUUM SYSTEM
FOR CENTRAL VAC
49
63
64
52
61
53
59
60
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