Product Description:

The PMB33F-20214-00 is a brushless servomotor produced by Pacific Scientific in the PMB Brushless Servomotors series. Within an automated machine, this motor supplies commanded torque and velocity so that axes follow motion profiles generated by a drive or controller during indexing, transfer, and synchronized machine cycles. By converting electrical input into precise mechanical rotation, it supports positioning tables, pick-and-place heads, and similar servo-regulated mechanisms used throughout industrial automation. Because commutation is electronic rather than brush-based, the motor avoids brush wear and supports clean, repeatable operation in enclosed equipment.

This model uses flying leads with MS connectors, allowing quick mating to shielded extension cables while keeping cabinet wiring straightforward. Its frame is the compact NEMA Size 34, which uses a 3.4-inch square mounting face that fits many brackets and machine plates. When operated from a 240 VAC drive, the windings can deliver a nominal stall current of 11.0 ARMS, and that current level helps size the connected power stage and cabling. Rotor position is monitored by an optical encoder with 2048 ppr, and the feedback package includes a digital encoder with commutation tracks so the drive receives incremental position data along with the commutation signals needed for proper stator switching. This feedback arrangement supports smooth low-speed control and accurate position updates during repeated moves.

Mechanical power is transmitted through a square key shaft, which helps couplings resist slip during repeated acceleration and deceleration. The laminated iron stack is built to a multiple of 3, increasing available torque compared with shorter motors in the same frame size. The unit is classified as a Standard Motor, which means it follows standard thermal and bearing limits rather than a custom build. It is intended for applications that need steady torque delivery without a special winding or custom mechanical package. These features suit general servo axes that need secure shaft coupling, stable feedback, and compact motor packaging.