Product Description:

The PMB33C-10201-01 is a brushless servo motor manufactured by Pacific Scientific and supplied in the PMB Brushless Servomotors series. Designed for closed-loop industrial axes, it delivers repeatable torque and speed under electronic control, linking motion controllers to mechanical loads in assembly lines, packaging machines, and material-handling stations. It is built for operation on DC links derived from 240 Vac mains and supports systems that use electronic commutation for controlled motion. This arrangement suits indexing, feed, and transfer axes that require stable response during repeated starts, stops, and speed changes.

With a NEMA Size 34 frame, the motor bolts directly to standard 86 mm flange patterns while leaving clearance for accessories in multi-axis machinery. Its nominal stall requirement of 3.8 ARMS allows a matched drive to supply continuous current without exceeding thermal limits at locked rotor, and that value also helps determine conductor gauge, fuse sizing, and heat sink selection. Power and feedback exit through flying leads with MS connectors, giving the unit pre-terminated plugs for cabinet wiring and minimizing enclosure depth. Electronic commutation is performed by an internal Hall sensor, so the drive can detect rotor position every electrical 60°, synchronize phase switching, and prevent cogging at low speed. A factory-fitted shaft seal surrounds the output journal to block dust or coolant and to help maintain bearing grease life when the motor is mounted in splash zones.

Because it is identified as a PMB Series Brushless Servomotor, the unit can be combined with drives that recognize its digital commutation pattern. The round output shaft simplifies coupling to gearboxes, pulleys, or flexible couplers without keyway stress concentrations that could initiate fretting. The shaft form also supports clamp-style couplings that distribute contact pressure evenly around the journal during cyclic reversing duty. A stack length multiple of 3 provides additional magnet mass for higher peak torque than shorter stators and raises inertia slightly, while remaining within typical servo tuning ranges.