Harbor Freight Belt Disc Sander Central MachineryLong-life induction motor with sealed bearings. Suitable for general sanding of various materials including metal, wood and plastic. No load speed 1450rpm (disc sander), 5 m/s (belt sander). Silverstorm 350w bench belt & disc sander 390mm woodwork silverline s972660 915 x 100mm sanding belt with 190mm length belt surface.