Danaher Motion has added three smaller frame sizes to its family of Cartridge DDR direct drive rotary servomotors. Now available in five frame sizes ranging from 4.25 in. square to 13.78 in. square with four stack lengths per frame, the motors feature pre-engineered components, an integrated, factory-aligned, high-resolution feedback device and a bearingless design that facilitates maintenance-free “mount and run” operation in less than 30 minutes. The motors are available with 240, 400 and 480 voltage ratings for maximum design flexibility and robust operation. They provide 4.57 to 510 N-m continuous torque, peak torque to 1,017 N-m, and speeds up to 2,500 rpm.