Product Description:

The PMB33C-10214-01 is a brushless servo motor manufactured by Pacific Scientific for the PMB Brushless Servomotors series. This permanently excited motor serves as the main rotary actuator in automated equipment, converting electrical power from a servo amplifier into controlled shaft motion. Integrated electronic commutation allows the drive to regulate phase current quickly, so the axis can hold commanded position, follow velocity profiles, or deliver steady torque under changing process load. That operating behavior suits indexing tables, coordinated multi-axis motion, and other industrial tasks that require repeatable movement through frequent start-and-stop cycles.

Its NEMA Size 34 frame uses the standard square mounting pattern associated with that motor size, which helps it fit common gearheads and mounting hardware. At rated load, the winding draws 3.8 ARMS of nominal stall current from a 240 VAC bus, which marks the continuous thermal limit of the stator. Rotor position is monitored by an optical disk that produces 2048 ppr incremental pulses, and the same feedback device provides commutation tracks, so the motor uses a digital encoder with commutation rather than separate Hall devices. A round output shaft supports flexible coupling to hubs, bellows couplings, or timing pulleys, which is useful where alignment and torsional compliance must be managed at the machine interface.

Power, feedback, and commutation conductors exit the housing as flying leads with MS connectors, allowing direct connection to matching servo cables without an integral terminal box. A factory-installed shaft seal helps protect the front bearing area from dust and emulsified coolant during machine operation. The magnetic circuit uses a stack length multiple of 3, which increases active iron length and supports higher torque within the same frame width. The motor also follows the standard parameter set used across the PMB Series brushless servomotor line, so the matching drive can be set to the correct motor code without custom motor characterization.