The Pacific Scientific POWERPAC K Series General Purpose Motor (Sigmax®) comes in both NEMA 34 and 42 frame sizes and provides a remarkable range of torque and acceleration. K series motors are known for their high torque to inertia ratios which provide increased acceleration rates that can move loads fast. This general purpose motor uses Sigmax® flux-focusing technology to achieve such high rates. Sigmax® technology works by adding rare earth magnets between the stator and rotor that help concentrate magnetic flux at desired points between the rotor and stator, optimizing the flux path. The K series motors from Pacific Scientific can handle the toughest motion requirements and are a cost effective alternative to servo motors.