Product Description:

The PMB33F-00214-02 is a brushless servomotor built by Pacific Scientific within the PMB Brushless Servomotors series. It converts electrical energy into controlled rotary motion for axes that require closed-loop positioning or velocity regulation in automated machinery. The motor is supplied as a discrete component that pairs with a matched drive to move conveyors, tooling heads, or pick-and-place actuators with repeatable accuracy.

One mechanical characteristic is its NEMA Size 34 frame, so the mounting holes and pilot diameter follow that standardized footprint. The motor uses a stack length multiple of 3, which increases continuous torque without enlarging the faceplate. During sustained stall at 240 VAC, the winding draws 11.0 ARMS, a value used to match the motor with an appropriate drive output and to estimate thermal loading. Power exits the housing through flying leads with MS connectors, allowing sealed mating without a terminal box when the motor is installed in tight spaces. Mechanical coupling is handled by a flat shaft end, which provides a positive grip for set-screw hubs and helps prevent slip during start-stop cycles.

Feedback and thermal protection are integrated into the motor assembly. A 2048 ppr optical encoder mounted on the rear provides position data fine enough for sub-degree resolution, while its digital encoder with commutation channels also provide phase alignment so the drive can deliver sinusoidal current immediately after power-up. To guard against overheating, a PTC thermistor is embedded in the windings, and its steep resistance change can be monitored by the amplifier to trigger a controlled shutdown before insulation limits are exceeded. The unit is a PMB Series Brushless Servomotor and uses the general connector and feedback approach found across this motor line.