Product Description:

Pacific Scientific manufactures the PMB31D-10214-00 as part of the PMB Brushless Servomotors series. The unit is a permanent-magnet, three-phase servomotor intended to provide tightly regulated torque and speed in automated machinery. When paired with a compatible drive, it delivers fast acceleration, accurate positioning, and repeatable motion for conveyors, pick-and-place heads, and light gantry axes. Its compact construction also suits installations where available space is limited while still supporting industrial-duty operation.

The motor uses a NEMA Size 34 frame, which means the mounting face is 3.4 inches square and fits common brackets and gearheads without adapters. Under a maximum input of 240 VAC, the nominal stall current is 5.4 ARMS, which helps with power-stage and cable selection for continuous load conditions. Position feedback is supplied by a 2048 ppr incremental encoder, providing 2048 pulses per revolution so the controller can resolve rotational movement to fine angular increments. The feedback device is a digital encoder with commutation, so it reports rotor position for both servo loop control and electronic phase switching. Power and feedback conductors exit the housing as flying leads with MS connectors, which simplifies wiring because the mating circular receptacles are widely used in industrial control cabinets.

The motor is identified as a PMB Series Brushless Servomotor and is supplied as a Standard Motor, which indicates that no special winding or flange options are applied. A round shaft allows the use of clamp couplings, timing pulleys, or direct-drive hubs without keyway machining. The electromagnetic core uses a stack length multiple of 1, giving the motor a single-segment lamination stack that balances torque density with low inertia. This arrangement supports rapid starts and stops without increasing overall weight or frame length.