Product Description:

The PMB33E-20100-00 is a brushless servo motor produced by Pacific Scientific and supplied within the PMB Brushless Servomotors series. As a rotary actuator, it converts electrical power into controlled torque and speed for precise positioning or velocity regulation in machinery such as pick-and-place heads, indexing tables, and packaging axes. When paired with an electronic drive, the motor operates in a closed-loop system that helps maintain commanded motion profiles under changing load conditions common in industrial automation. This makes it suitable for axes that require repeatable starts, stops, and speed changes during automatic cycles.

Its frame conforms to the NEMA Size 34 envelope, so the mounting holes and pilot dimensions match common U.S. flange patterns. At a 240 VAC bus, the windings can sustain a nominal stall current of 7.4 ARMS, indicating the continuous phase current associated with rated holding torque. Power and feedback connections use flying leads with AMP connectors, which simplify routing where a fixed receptacle on the motor housing would add bulk. Rotor position is measured by a built-in resolver, giving robust angle feedback in electrically noisy environments. Because a resolver uses analog sine and cosine signals, it remains dependable at elevated temperatures and under interference from nearby power wiring. Mechanical output is transferred through a square key on the shaft, allowing positive engagement with pulleys or couplings.

This unit is classified as a standard motor, which indicates a regular production configuration rather than a custom winding or special sealing arrangement. The electromagnetic section uses a stack length multiple of 3, adding lamination length to increase active magnetic material within the 34-frame envelope. That added stack length supports higher torque density without changing the basic mounting footprint. The motor is intended for use with a compatible servo amplifier that can process resolver signals and regulate phase current for stable low-speed operation and controlled acceleration. This layout is commonly used on indexing, feeding, and transfer mechanisms where compact servo packages are preferred.