Product Description:

The PMB33F-20201-00 is a brushless servomotor built by Pacific Scientific. It converts commanded current into controlled shaft rotation for servo-driven equipment such as automated lines, indexing tables, and packaging machinery. The motor can hold position at standstill or accelerate smoothly to a commanded speed or position. Its mid-frame size fits applications that need more output than smaller motors without moving to a larger frame class. This makes it suitable for repeatable motion tasks where low-speed control and predictable acceleration are important.

With a frame size of NEMA Size 34, the housing follows an 86 mm square mounting pattern, allowing it to fit machines designed around that common flange size. The motor has a nominal stall current of 11.0 ARMS when operated at 240 VAC. Rotor angle is reported by Hall sensors embedded in the stator, which provide commutation feedback during startup and low-speed operation. Mechanical output is transmitted through a square-key shaft, giving positive torque transfer to pulleys or couplings. The keyed shaft does not rely on clamp friction alone when torque reversals are frequent. Power and feedback conductors leave the housing as flying leads with MS connectors, which support straightforward connection to matching cable assemblies.

The motor uses a stack length multiple 3 lamination pack, which gives the magnetic circuit more active length while keeping the same external footprint. The longer lamination pack also supports higher continuous torque than shorter stack options in the same frame family. It is supplied as a standard motor, so the electrical characteristics follow the published values for this configuration. Identical units keep the same Hall phasing and wiring color codes, which helps maintain consistent drive behavior across matching axes.