Product Description:

The PMB33F-20100-00 is a brushless servomotor produced by Pacific Scientific for the PMB Brushless Servomotors series. As a permanent-magnet motor, it converts commanded current into torque for positioning, velocity, and tension loops in automated machinery. Used with compatible servo drives, the unit supplies bidirectional motion and closed-loop feedback that support indexing tables, pick-and-place heads, and material-handling axes across industrial automation cells.

This motor is built on the NEMA Size 34 frame, so its mounting face and pilot conform to a standard 3.38-inch square bolt circle used on medium-torque servomotor brackets. A nominal stall current of 11.0 ARMS indicates the continuous phase current required to hold rated torque without rotor movement, which the drive uses to set continuous current limits. Power and feedback exit the housing through flying leads with AMP connectors, allowing field termination into junction boxes while preserving strain relief at the motor. Rotor position is measured with a resolver, providing sine-cosine feedback that remains operational in high-temperature or high-shock environments. Mechanical coupling is handled by a square key shaft, which transmits torque through a keyed hub and helps prevent slip under reversing loads.

Additional configuration details refine the performance envelope. A stack length multiple of 3 increases the active lamination height, raising continuous torque without altering the frame size. The motor ships as a standard motor, meaning no custom winding or flange modifications are applied. Maximum electrical ratings align with 240 Vac bus drives, matching the insulation system and resolver excitation limits. As a brushless servomotor, all commutation is electronic, eliminating brush wear during operation.