Product Description:

The PMB33C-20216-00 is a brushless servomotor manufactured by Pacific Scientific and delivered within the PMB Brushless Servomotors series. It acts as the rotary actuator in servo loops where precise speed, position, and torque regulation are required for automated packaging, conveying, and assembly stations. The unit is described simply as a brushless servomotor, confirming its role as an electromechanical power element that pairs with compatible digital drives and feedback electronics on the factory floor. This type of motor is commonly used where repeatable motion, controlled acceleration, and stable low-speed response are needed during continuous industrial operation.

The housing follows the NEMA Size 34 frame, so mounting holes, pilot diameter, and shaft height match other 3.4-inch motors already standardized on many machines. When energized by a 240 VAC amplifier, the winding can accept up to 3.8 ARMS of nominal stall current, which indicates the continuous current the motor can hold at standstill without overheating under proper conditions. Position data comes from a 4096 ppr incremental disk, and the integrated Digital Encoder with commutation also delivers commutation signals that the drive uses to align phase currents. Field wiring is terminated through Flying leads with MS connectors, an arrangement that removes terminal blocks and supports compact cable routing. These feedback and connection features support accurate closed-loop control and steady communication between the motor and the matching drive.

A Square Key shaft transmits torque positively to gearboxes or timing pulleys, helping prevent slip during reversing motion and repeated load changes. Magnetic output is increased by a lamination stack length multiple of 3, which provides greater active core length within the size-34 housing. Because the unit is supplied as a Standard Motor, it comes without special factory options. The motor remains easy to match with existing axis layouts, and Pacific Scientific uses this format across servo installations that need predictable mechanical fit and stable electrical performance.