JET 638003 22-44 Pro 22-Inch 1-3/4-Horsepower Drum Sander, 110-Volt 1-Phase Powerful 1-3/4-horsepower 110-volt motor operates sander at 1,600-rpm 5-by-22-inch suspended aluminum drum is precision machined and balanced "No give" conveyor offers an infinitely variable feed rate of 0-to 10-feet per minute Height-adjustment handle allows a tight grip and the ability to make radical height changes quickly Sealed and permanently lubricated ball bearings are mounted on both ends of the drum