Product Description:

The PMB33E-00200-01 is a brushless servomotor from Pacific Scientific in the PMB Brushless Servomotors series. This permanent-magnet motor fits directly to gearheads or belt drives and supplies precise torque and velocity for coordinated axes in material handling, pick-and-place systems, and light machine-tool automation. It is intended for applications that need rapid dynamic response, repeatable acceleration, and accurate position feedback from the connected drive. Because the rotor uses permanent magnets rather than wound excitation, the motor can respond quickly to current changes during frequent starts, stops, and reversing moves.

The motor uses a NEMA Size 34 frame, which gives it a standard 3.4-inch face dimension for common mounting patterns and compact axis layouts. With a 240 VAC supply, the winding can hold the rotor stationary at a nominal stall current of 7.4 ARMS, which indicates the continuous current the amplifier must provide during zero-speed holding or high-torque positioning without overheating the stator. Position and velocity information comes from a resolver, an electromagnetic feedback device whose analog sine-cosine signals allow high-resolution interpolation and reliable operation in the presence of vibration. Mechanical output is delivered through a flat shaft, and the motor uses flying leads with MS connectors so power and feedback cables can be routed directly to junction points while retaining secure mating connections.

The motor is supplied with a shaft seal, which helps limit dust or fluid ingress at the output journal where contamination can shorten bearing or coupling life. Its electromagnetic section uses a stack length multiple of 3, which increases active iron and raises continuous torque without changing the mounting pattern. The lamination and winding arrangement help reduce torque ripple during low-speed motion, which is useful on indexing, feed, and transfer axes that depend on steady servo response. The motor keeps the same general mechanical envelope while offering a longer active section for higher torque density.