Product Description:

Pacific Scientific manufactures the PMB33C-00114-00 as part of its PMB Brushless Servomotors series. This brushless AC servomotor is built for industrial automation axes that need accurate torque production and closed-loop speed or position control, allowing machinery to follow drive commands with minimal tracking error. It is suited to motion applications that require repeatable starts, stops, and speed changes across compact machine stations. Brushless operation also avoids the wear associated with mechanical commutation parts, which helps support consistent response during repetitive duty cycles. Power, signal, and ground conductors exit the stator as flying leads with AMP connectors, permitting quick cabinet wiring without custom harnesses.

The motor mounts on a NEMA Size 34 face, so it fits 3.4-inch-square housings common in packaging and material-handling equipment. This mounting format is widely used on compact servo assemblies, which helps the motor fit standard brackets and machine layouts. Rotor position feedback comes from a 2048 ppr incremental encoder, enabling fine commutation steps that improve velocity smoothness at low speeds and support accurate position updates during controlled moves. Continuous stall torque can be delivered while drawing a nominal stall current of 3.8 ARMS when supplied from a 240 VAC servo drive, and matching the drive to this current helps limit thermal stress during static holding. A built-in digital encoder with commutation tracks electrical cycle position, so the drive can switch phases in synchrony with rotor angle and maintain efficient operation.

The motor has a flat shaft that accepts clamp or set-screw couplings, which helps minimize backlash in positioning tasks and supports direct connection to common motion components. This shaft style is often used where couplings are clamped directly to the motor output without a keyed interface. The motor uses Stack Length Multiple 3, which increases active iron without altering frame width and supports higher torque within the same mounting envelope. Because it is supplied as a standard motor, no application-specific modifications are required before installation. The PMB Series Brushless Servomotor designation matches Pacific Scientific digital drives that use PMB commutation phasing and thermal parameters.