Product Configuration/Specifications: 12,000 RPM Random Orbital Sander
Model
Orbit mm
Vacuum Type
Number
(in)
33632 Central Vacuum 2.5 (3/32) 150 (6)
33633 Central Vacuum 5 (3/16)
38505 Central Vacuum 5 (3/16)
33634 Central Vacuum 8 (5/16)
* Noise values are applied to mechanically identical tools, declared noise levels measured in accordance with EN ISO 15744.
** Declared vibration levels in accordance with EN ISO 12096; measurements carried out in accordance with standard EN ISO 28927‑3.
IMPORTANT NOTE: The noise and vibration values stated in the table are from laboratory testing in conformity with stated codes
and standards and are not sufficient risk evaluation for all exposure scenarios. Values measured in a particular work place may be
higher than the declared values. The actual exposure values and amount of risk or harm experienced to an individual is unique to each
situation and depends upon the surrounding environment, the way in which the individual works, the particular material being worked,
work station design, as well as upon the exposure time and the physical condition of the user. 3M™ cannot be held responsible for the
consequences of using declared values instead of actual exposure values for any individual risk assessment.
PRIOR TO THE OPERATION
The tool is intended to be operated as a hand held tool. It is always recommended that while using the tool operators stand on a
solid floor in a secure position with a firm grip and footing. Be aware that the sander can develop a torque reaction. See the section
"SAFETY PRECAUTIONS".
Use a clean lubricated air supply that will give a measured air pressure at the tool of 6.2 bar (90 psig) when the tool is running with the
lever fully depressed. It 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 1 as this will supply clean lubricated air at the
correct pressure to the tool. In any case appropriate air pressure regulators shall be used at all times while operating this tool where the
supply pressure exceeds the marked maximum of the tool. Details of such equipment can be obtained for your tool distributor. If such
equipment is not used the tool should be manually lubricated. To manually lubricate the tool disconnect the airline and put 2 to 3 drops of
suitable pneumatic motor lubricating oil such as 3M™ Air Tool Lubricant PN 20451 Fuji Kosan FK‑20 Mobil ALMO 525 or Shell TORCULA®
32 into the hose end (inlet) of the tool. Reconnect tool to the air supply and run tool slowly for a few seconds to allow air to circulate the
oil. If the tool is used frequently lubricate it on a daily basis or lubricate it if the tool starts to slow or lose power. It is recommended 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.
Recommended Airline
Size ‑ Minimum
10 mm
1.
Read all instructions before using this tool. All operators must be fully trained in its use and aware of these safety rules.
2. The tool RPM should be checked on a regular basis to ensure proper operating speed.
3. Make sure the tool is disconnected from the air supply. Select a suitable abrasive and secure it to the pad. Be careful to center the
abrasive on the pad.
4. Always wear required safety equipment when using this tool.
5. When sanding/buffing always start the tool on the workpiece. This will prevent gouging due to excess speed of the buff pad. Stop
air flow to the tool as it is removed from the workpiece.
6. Always remove the air supply to the sander before fitting, adjusting or removing the abrasive or pad.
7.
Always adopt a firm footing and grip and be aware of torque reaction developed by the sander.
8. Use only 3M approved spare parts.
9. Always ensure the material being sanded is firmly fixed to avoid movement.
10. Check hose and fittings regularly for wear. Do not carry the tool by its hose; always be careful to prevent the tool from being started
when carrying the tool with the air supply connected.
11. Dust can be highly combustible. Keep working area clean.
12. If tool is serviced or rebuilt check to ensure that the maximum tool RPM is not exceeded and that there is no excessive tool vibration.
13. Do not exceed maximum recommended air pressure. Use safety equipment as recommended.
14. Prior to installing any sanding or polishing accessory, always check that its marked maximum operating speed is equal or higher than
the rated speed of this tool.
15. The tool is not electrically insulated. Do not use where there is a possibility of contact with live electricity, gas pipes, and/or
water pipes.
16. This tool is not protected against hazards inherent in grinding and cutting operations and no such accessories should ever
be attached.
17. Take 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 orbiting 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 the event of any disruption of pressure; do not attempt to re‑start until the disruption has
been corrected.
Pad Size
Product Net
Height mm
mm (in)
WT kg (lb)
(in)
0.869 (1.91) 92.6 (3.64) 238 (9.37) 73.7 (84.7)
150 (6)
0.896 (1.97) 92.6 (3.64) 238 (9.37) 72.7 (83.7)
75 (3)
0.742 (1.63) 92.5 (3.64) 203 (7.99) 77.1 (88.1)
150 (6)
0.918 (2.02) 92.6 (3.64) 238 (9.37) 77.1 (88.1)
Operating & Maintenance Instructions
Recommended Maximum
Hose Length
3/8 in
8 meters
Safety Precautions
*Noise
*Uncertainty
Length
Level dBA
dBA Pressure
mm (in)
Pressure
(Power)
(Power)
Maximum Working Pressure 6.2 bar 90 psig
Recommended Minimum
25 feet
9
**Vibration
**Uncertainty
Level m/s2
K m/s2
(ft/s2)
(ft/s2)
3 (3)
3.87 (12.70)
0.88 (2.89)
3 (3)
3.25 (10.67)
0.82 (2.70)
3 (3)
1.71 (5.61)
0.66 (2.17)
3 (3)
4.98
0.99
Air Pressure
NA
NA