It sounds like the bearings are going out, just underneath the Bosch Sander pad. You can take it apart and replace the bearings or replace with a spindle assembly. The part # for the dust fan coupling is 2606610901 and will run about $22.55. The part #'s for the bearings: 2600905058 and 2600905034 and they will run about $11.40 each. It is probably best to do the dust fan coupling because it comes with everything.
Don- ww.toolsandmachinery.com
December 2008
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