Product Description:

The PMB33F-00116-03 is a servo motor manufactured by Pacific Scientific and assigned to the PMB Brushless Servomotors series. It is intended for closed-loop motion axes where repeatable torque and velocity are required for positioning, packaging, or material-handling stations in automated equipment. Electronic commutation eliminates brush wear and makes the unit suitable for continuous industrial duty cycles where maintenance windows are limited and stable response is needed over long production runs. Its brushless design also supports clean operation by removing commutator dust and reducing routine service demands.

The motor has a frame size of NEMA Size 34, so the body diameter and mounting pilot match common 86 mm flange patterns, simplifying interchange with other motors of the same size. On a 240 VAC bus, the armature can hold continuously at a nominal stall current of 11.0 ARMS, allowing the drive to deliver rated static torque without overheating. Rotor feedback comes from a quadrature encoder that outputs 4096 ppr, and the built-in sensor is a digital encoder with commutation, so both position data and phase signals are returned on the same ribbon. Power and feedback exit the housing through flying leads with AMP connectors, which provide a flexible pigtail arrangement for wiring in tight cabinets.

Factory options equip the motor with a shaft seal and PTC thermistor; the seal limits ingress at the front bearing while the thermistor reports winding temperature for drive-controlled derating. A flat on the shaft provides a reference surface for couplings that rely on set screws rather than keys. The electromagnetic stack is built in a multiple of 3, giving a longer active length and higher torque density than shorter variants of the same diameter. This arrangement supports applications that need stronger torque output without changing the basic frame size.