Product Description:

The PMB33C-00214-03 is a brushless servomotor built by Pacific Scientific within the PMB Brushless Servomotors series. As a rotary actuator for industrial automation, it converts controlled electrical input from a drive into torque and position that can be closed-loop with a digital encoder. The unit is selected for motion axes that need repeatable velocity profiling, stall holding torque, and rapid dynamic response in packaging machines, pick-and-place heads, or small gantries. Its brushless design also supports smooth electronic commutation during frequent starts, stops, and direction changes.

Power termination is provided through flying leads with MS connectors, so wiring can be completed without a hard-mounted junction box. The motor frame conforms to NEMA Size 34, so it fits standardized brackets that use the 3.4-inch square bolt pattern. Under a maximum rated line supply of 240 VAC, the winding can sustain a nominal stall current of 3.8 ARMS, which helps determine drive sizing for continuous torque production without thermal overload. Feedback is handled by an optical encoder that delivers 2048 ppr incremental resolution for position tracking. Rotor commutation and speed monitoring are combined in the integrated digital encoder with commutation, removing the need for separate Hall sensors and reducing wiring count.

Mechanical options on this model include a shaft seal and PTC thermistor. The seal limits the ingress of fine contaminants, while the thermistor supplies the drive with over-temperature data for real-time protection. A flat on the stainless-steel shaft simplifies coupling by providing a reference surface for set screws and eliminating keyed components. The magnet stack is built to a multiple of 3 laminations, giving this length variant higher continuous power than shorter cores without changing the mounting footprint.