Product Description:

The PMB33C-20216-02 is a brushless servomotor from Pacific Scientific in the PMB Brushless Servomotors series. As a rotary actuator, it converts controlled electrical energy into precise mechanical motion for positioning, speed control, and torque regulation in automated machinery. The model is intended for use with servo drives that require stable feedback and repeatable stall torque, making it suitable for indexing tables, pick-and-place heads, and packaging axes that operate under closed-loop control.

The motor frame follows the NEMA Size 34 standard, so its flange and pilot dimensions match common U.S. mounting hardware used in existing equipment. Under rated conditions at 240 VAC, the winding can sustain 3.8 ARMS of nominal stall current, which indicates the continuous phase current needed to hold position without thermal overload. Feedback is supplied at 4096 ppr, and commutation is provided by a digital encoder with commutation, so the controller receives position data and commutation signals from one integrated device. Mechanical output is delivered through a square key shaft, which supports positive coupling to pulleys, gears, and similar driven elements.

Power and signal conductors exit as flying leads with MS connectors, which allows quick disconnection at the mating bulkhead while keeping cable routing straightforward. Thermal monitoring is provided by a built-in PTC thermistor, giving the drive a direct temperature signal for overload protection during sustained duty. The electromagnetic section uses a stack length multiple of 3, increasing active iron length to raise torque output without changing the frame size. This arrangement helps the motor fit applications that need higher torque from a compact package while maintaining compatibility with standard servo drive tuning practices.