Product Description:

The PMB33F-10100-01 is a brushless servomotor developed by Pacific Scientific as part of the PMB Brushless Servomotors series. It is used as the prime mover in automated machinery where a drive must accelerate, decelerate, and hold loads with high positional accuracy under digital control. By combining electronic commutation with feedback sensing, the motor gives motion controllers direct electric actuation without the slip associated with induction devices. This arrangement supports smooth low-speed response and repeatable positioning in coordinated multi-axis systems. Because the motor is brushless, there are no brushes to wear, which helps maintain stable performance over long operating cycles.

The frame conforms to the NEMA Size 34 standard, so its 3.38-inch square flange aligns with commonly available gearheads and mounting brackets. Under locked-rotor test conditions, the windings draw a nominal stall current of 11.0 ARMS, which indicates the current level the matching servo amplifier must supply at stall. Power and feedback conductors exit the housing as flying leads with AMP connectors, eliminating the need for integral receptacles and allowing harnesses to pass through tight machine spaces. Rotor position is detected by a resolver, providing sinusoidal reference and quadrature signals that remain usable across temperature extremes and at zero speed. The resolver-based feedback also supports stable commutation during startup and reversal, when accurate rotor angle information is especially important. A round shaft permits straightforward coupling with clamped hubs or timing pulleys, which helps simplify mechanical integration.

Where particulate or coolant exposure is expected, the motor can be supplied with a shaft seal, which helps limit ingress at the output end. The lamination stack is extended to a multiple of 3, increasing active iron length and supporting higher continuous torque while preserving the external frame size. The longer active iron path improves magnetic interaction in the stator and rotor without changing the mounting envelope. Drive systems operating from 240 Vac AC supply are compatible with this electrical demand, so the motor fits installations that use common industrial power sources. Its compact wiring arrangement also helps keep cable routing orderly in confined equipment, and the sealed output end adds protection where airborne debris or light fluid exposure is present.