[mercsvt]

i tried the 10000 rpm toll way to fast, powerful but to fast, i ended up getting the sander you are refering to the sears 1 3/4 horse 4600 rpm it has ball bearings on motor shaft not bushings, hasnt burt after 5 hours of polishing, so far so good on average the cheaper sears polisher before was lasting an hour went thru 3 of them.