Product Description:

The PMB33F-20216-00 is a brushless servomotor manufactured by Pacific Scientific within the PMB Brushless Servomotors series. In a closed-loop motion system, it converts drive current into rotary movement while returning digital feedback for precise speed and position regulation. The motor is typically mounted to assemblies such as gearheads or belt drives in automated machinery where consistent torque, repeatable indexing, and compact NEMA frame dimensions are required. This arrangement makes the unit suitable for axes that need controlled starts, stops, and repeatable motion over many operating cycles.

The power interface is provided through flying leads with MS connectors, giving the unit pre-terminated conductors that mate with standard circular receptacles and reduce wiring variation at the machine. Rotary position is resolved at 4096 ppr, so each mechanical revolution is divided into 4096 discrete counts for fine incremental motion. The frame conforms to NEMA Size 34, which places the face mounting bolts on a 2.75-inch square pattern and supports compatibility with common mounting hardware for that motor class. Under locked-rotor conditions at 240 VAC, the winding draws 11.0 ARMS, which is useful when matching the motor to an appropriate drive. Output torque is transferred through a square key machined in the shaft, helping the coupling resist rotational slip under load.

This model ships as a standard motor, so its magnetic stack and winding follow the normal series configuration rather than a special build. Feedback for commutation and position control is provided by a digital encoder with commutation, allowing the drive to align the stator phases immediately after power-up and maintain accurate rotor tracking during motion. The active iron uses a stack length multiple of 3, which gives this version more continuous torque than shorter models in the same family. It is commonly used in compact multi-axis equipment where repeatable response, stable feedback, and consistent electrical connections are important.