Cartridge DDR Servo Motors combine the performance advantages of a frameless motor with the ease of installation of a full-frame motor. These motors feature an integrated, factory-aligned high resolution feedback device and a unique bearingless design that couples directly to the load, using the machine’s own bearings to support the rotor. Most models can be installed in under five minutes. Benefits include: Provides the space-saving and performance advantages of a frameless DDR motor with the ease of installation of a full-frame motor Integrated compression coupling and shipping hardware: eliminates parts and labor for a faster, lower-cost machine build Installs in 5 minutes Up to 50% more torque density than comparably sized conventional servomotors Direct load connection eliminates backlash, compliance and maintenance of gearboxes, belts or pulleys Low cogging for smooth low-speed rotation Zero backlash and compliance provides more responsive system performance Pre-configured amplifiers and feedback devices simplify installation and startup Cartridge DDR Motors Selection Guide Cartridge DDR safety guide DDR Motors Selection Guide