Product Description:

The PMB33E-00100-03 is an AC brushless motor unit produced by Pacific Scientific and assigned to the PMB Brushless Servomotors series. Designed for closed-loop industrial axes, the motor converts commanded current from a drive into rotor torque that keeps automated tables, packaging arms, and pick-and-place heads synchronized with motion profiles. Its integrated feedback, cable termination style, and mid-size frame support direct installation in machine assemblies with limited mounting space. This layout supports repeatable positioning and stable speed control in compact automation equipment.

Within the PMB line, this model is classified as a PMB Series Brushless Servomotor, and it uses the mid-frame envelope of NEMA Size 34. With a 240 VAC bus, the winding can deliver a nominal stall current of 7.4 ARMS, which supports steady torque while the shaft is held in position by the controller. Rotor position is measured by a resolver, providing analog sine-cosine signals that remain accurate at high temperatures and speeds. Power and feedback conductors exit the housing as flying leads with AMP connectors, so the motor can be wired through crimped terminations instead of threaded plugs. This cable style can also simplify routing where separate harness branches must pass through narrow machine openings.

The electromagnetic core uses a stack length multiple 3 lamination pack, which increases continuous torque over shorter stacks without changing the mounting pattern. The shaft has a machined flat section to support rigid coupling to timing pulleys or cams and to help reduce slip under reversing load. The motor includes a shaft seal and PTC thermistor; the seal helps block coolant splash from the bearing cavity, and the thermistor can signal the drive when winding temperature rises toward its limit. The seal and thermistor make the motor suitable for packaging and other industrial machinery where repeated motion, occasional washdown exposure, and thermal monitoring are important.