JET 22-44 PRO 22-Inch 3-Horsepower 1PH DRO Drum Sander with Table and Caster Our exclusive SandSmart infinitely variable-feed control produces the ultimate finish at a rate from 0 to 10-Feet per minute and prevents machine overload Patented conveyor belt trackers. Dramatically reduce the need for manual belt adjustments 22-Inch wide suspended drum is supported on both ends with a truss-like carriage arm for greater strength and easy alignment to the table surface for consistent performance Sealed and permanently lubricated drum ball bearings for longer life Precision-flattened reinforced steel conveyor bed and no-give power feed belt provide a constant smooth sanding action for better results