Product Description:

The PMB33C-20114-01 is a brushless servomotor developed by Pacific Scientific for the PMB Brushless Servomotors series. In automated packaging lines, test stands, and light material-handling gantries, it converts electrical power into controlled rotary motion. Integrated feedback allows the associated drive to command rapid acceleration, hold position under load, and repeat movements with consistent accuracy. This operating style supports indexing, feed control, and other axis tasks where motion must remain stable during frequent starts, stops, and short dwell periods.

The motor uses a NEMA Size 34 frame, so its mounting face and pilot diameter follow common industry dimensions used in compact servo installations. At a nominal stall current of 3.8 ARMS on 240 VAC drives, the winding can sustain rated torque without overheating during continuous duty. Rotor position is reported by a 2048 ppr optical track, and commutation is handled by the integrated Digital Encoder with commutation so the drive can align motor phases correctly at startup. Power, feedback, and ground are provided through Flying leads with AMP connectors, which support direct connection and flexible cable routing inside the machine.

Torque is transmitted through a Square Key on the output shaft, providing a secure connection for pulleys, couplings, or gearboxes. A fitted shaft seal helps limit the entry of dust and splashed fluids around the shaft opening, which is useful when the motor is mounted near production debris or light washdown areas. The motor uses a Stack Length Multiple of 3, which gives it a longer active iron section than shorter versions in the same platform and supports higher continuous output from the same frame family. Pacific Scientific classifies the unit as a PMB Series Brushless Servomotor, making it a direct fit for applications built around the PMB platform and its standard control characteristics.