Product Description:

The PMB33E-20201-00 is a brushless servomotor manufactured by Pacific Scientific as part of the PMB Brushless Servomotors series. This motor supplies regulated torque and precise shaft positioning for pick-and-place arms, small conveyors, indexing mechanisms, and other automation axes that require accurate speed control and repeatable stopping points. Its electromagnetic design delivers repeatable motion, and the rotor's low inertia supports rapid acceleration and deceleration during frequent start-stop cycles and direction changes.

The motor uses a NEMA Size 34 mounting face, which provides a standardized 3.4-inch square frame for equipment built around that format. The standardized mounting pattern also helps the motor fit compact machine frames without custom adapter plates. Continuous excitation is limited to 7.4 ARMS stall current at 240 VAC, which helps establish drive capacity, thermal load, and conductor sizing during integration. Field wiring is handled through flying leads with MS connectors, allowing flexible cable routing while the circular connectors lock securely in place. Rotor position feedback is supplied by an integral Hall sensor, so the drive receives commutation information even from standstill and can start the shaft smoothly at low speed.

Torque is transmitted through a shaft with a square key, providing positive coupling to pulleys or hubs without relying only on set-screw friction. The keyed shaft also helps maintain positive torque transfer when loads reverse direction or cycle rapidly. The unit is supplied as a standard motor, so it uses the regular electrical and insulation arrangement for this model line rather than a special variant. Its magnetic section uses a stack length multiple of 3, which increases active material and raises torque capacity while keeping the same frame format.