Product Description:

The PMB33E-20214-00 is a brushless servomotor built by Pacific Scientific and supplied under the PMB Brushless Servomotors series. The unit converts drive current into precise rotary motion for indexing tables, pick-and-place axes, and similar closed-loop automation tasks where compact torque delivery is important. Its brushless design supports accurate speed and position control while avoiding brush wear during repetitive motion service. Because it is intended for servo duty, it is suitable for applications that require rapid starts, stops, and direction changes without sacrificing repeatability.

Power and feedback terminations exit through flying leads with MS connectors, so the motor can connect to standard mil-spec receptacles without additional breakout boards. The rotor shaft uses a square key to transmit torque and help prevent slippage during rapid direction changes. Frame sizing follows NEMA Size 34 dimensions, and the 3.38-inch square face pattern lets the motor mount to common gearbox adapters or directly to machinery. The feedback device supplies 2048 ppr of incremental resolution, which supports fine position updates when quadrature decoding is used. That resolution gives the controller more count data for smooth low-speed regulation and accurate index moves. Under a maximum 240 VAC bus, the winding can sustain a nominal stall current of 7.4 ARMS, which is used when matching the motor to a compatible drive.

The internal sensor is a digital encoder with commutation, so phase information and incremental counts are combined in one housing to reduce wiring bulk. Combining these functions in one device also reduces the number of separate sensing components at the rear of the motor. The winding uses a stack length multiple of 3, giving the motor a longer active core while keeping the same mounting footprint. The motor is supplied as a standard motor, which indicates the base configuration for this model. This layout keeps the package compact while supporting servo operation in tightly spaced machine assemblies.