The KSSM series servo motor is a special servo motor designed for application environments such as ultra-high vacuum ultra-high tem- perature, deep low temperature, and irradiation. The shell is made of stain- less steel material and uses a rotary transformer as the motor position feedback component. Rated power of 400W, 750W.1800W, 3800W, volt- age level of 48VDC/220V AC/380VAC.