Product Description:

The PMB33E-10100-03 is a brushless servomotor manufactured by Pacific Scientific within the PMB Brushless Servomotors series. This rotary actuator converts three-phase electrical power into regulated torque and speed, allowing precise positioning of machinery axes, indexing tables, or pick-and-place heads in industrial automation cells. Its operation is based on permanent-magnet synchronous construction, giving the drive amplifier a predictable electrical model for closed-loop control of acceleration, velocity, and position. That operating principle also supports smooth response during repeated starts, stops, and speed changes.

This motor is built on a NEMA Size 34 frame, so its face mounting pattern and shaft height match equipment that follows the same NEMA standard. The winding can sustain a nominal stall current of 7.4 ARMS at 240 VAC, which is the current the drive must supply to produce continuous torque without thermal overload. Feedback is provided by a resolver, which sends rotor angle information through two sinusoidal channels that resist electrical noise and support dependable position feedback. Power and signal conductors exit the housing as flying leads with AMP connectors, which simplifies wiring because no panel-mounted mating connector is required at the motor body.

The mechanical interface uses a round shaft, which supports direct coupling with clamped or pinned loads. For added protection, the motor includes a shaft seal and a PTC thermistor; the seal helps block contamination at the shaft while the thermistor allows the drive to detect excessive winding temperature. Magnetic output is increased by Stack Length Multiple 3, meaning three lamination segments are stacked to enlarge the active iron length without changing the frame outline. The longer magnetic stack increases available torque within the same frame envelope, which can be useful where mounting space is limited but stronger continuous output is required.