Product Description:

The PMB33E-20101-02 is a servo motor produced by Pacific Scientific and supplied within the PMB Brushless Servomotors series. Designed for closed-loop motion axes, it converts electrical energy from a matched drive into regulated rotary movement so indexing tables, pick-and-place actuators, or packaging spindles can follow programmed velocity and position profiles while minimizing maintenance associated with brushed designs. It shares the mechanical footprint of other motors in the family, making it straightforward to install on standardized mounting faces found in conveyors, fillers, and electronic assembly gantries.

Its mechanical envelope is governed by the NEMA Size 34 frame, so the mounting face and pilot dimensions align with standard American flange hardware. On a 240 VAC bus, the motor sustains a nominal stall phase current of 7.4 ARMS, which indicates the continuous current limit when the rotor is held stationary at rated temperature. Rotor commutation feedback is provided by an integral Hall sensor, enabling six-step or sinusoidal drives to energize the correct stator phases. Service wiring exits the housing through flying leads, simplifying field termination and avoiding rigid backshells that lengthen the shaft extension. Torque is delivered through a shaft cut with a square key, preventing slip between the motor and the hub or pulley mounted on it.

Field wiring interfaces with molded AMP connectors, eliminating the need for solder joints and simplifying cable connection. Internal temperature is supervised by a PTC thermistor that changes resistance sharply at its switching point, giving the drive time to limit current before insulation ratings are exceeded. The magnetic circuit employs a stack length multiple of 3, meaning three lamination segments are combined to boost flux density and raise continuous torque.