Product Description:

The PMB33F-00100-02 is a brushless servomotor produced by Pacific Scientific and placed within the PMB Brushless Servomotors series. As a permanent-magnet motor matched to electronic drives, it delivers closed-loop speed and position control for pick-and-place axes, indexing tables, and similar motion tasks on industrial machines. The unit couples an internal resolver to its rotor so the drive can track shaft angle in real time. Because the feedback element is built into the motor, the controller receives rotor-angle information directly from the assembly rather than from a separate external transducer.

Its frame corresponds to NEMA size 34, giving a mounting face suitable for medium-torque machinery while keeping the package compact. Under locked-rotor thermal conditions on a 240 VAC bus, the motor can sustain 11.0 ARMS of nominal stall current without exceeding coil temperature limits. Power and feedback exit the housing through flying leads with AMP connectors, which simplify integration into custom cable harnesses and reduce connector stack height inside enclosures. Positional feedback is generated by a resolver, which provides absolute shaft angle with good noise immunity in electrically harsh environments. A machined flat on the output shaft allows secure coupling with set-screw or clamp hubs and helps prevent slip during bidirectional reversals. That combination suits compact axes where cable space is limited but reliable feedback is still required near switching devices and power wiring.

The winding package includes a PTC thermistor so the drive can detect internal temperature rise and shut the axis down in an orderly way before insulation damage occurs. Temperature sensing gives the control system a direct way to respond to overload conditions during long duty cycles or low-speed holding. This model uses a stack length multiple of 3, which adds magnetic active material and raises continuous torque compared with shorter stacks in the same frame. The added active length supports higher output within the same mounting envelope, which helps when a machine cannot accept a larger motor frame.