Reply by OSU55

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Posted on Pneumatic orbital and geared planetary sanders. What's the diff?

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2658 posts in 2877 days

#1 posted 07-12-2018 12:35 PM

ROS works by centrifugal force. During heavy material removal with coarse paper and much downforce the motion can almost be stopped, so material removal is slowed greatly. The geared disc will maintain the motion and material removal.

For finish sanding the geared type can remove too much material. Depends on whether you want a finish or rough sander, both can be used for either, but the design intent is different.

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