The units withstand repeated starts and stops and continuous torque. They use powder-coated, castaluminum housings and standard face and foot mounts with custom mounts optional. Internal ball bearings and needle bearings on the output shaft give the motor substantial overhung-load durability and keep it quiet. Groschopp Inc., 420 15th St. NE, Sioux Center, IA 51250, (712) 722-4135, www.groschopp.com