Product Description:

The PMB33F-10101-03 is a brushless servomotor manufactured by Pacific Scientific and supplied within the PMB Brushless Servomotors series. In motion-control architectures, it provides closed-loop torque and speed regulation for positioning tables, pick-and-place axes, and other cyclic loads that require high dynamic response from a compact actuator. Its compact format suits machinery that repeats short moves and frequent speed changes during normal operation. The motor is also suited to indexing equipment and compact automation modules that need repeatable motion in limited installation space.

The motor body uses a NEMA size 34 frame, which sets the front-face mounting pattern and overall envelope for standardized machinery layouts. Under a 240 VAC supply, the windings can sustain a nominal stall current of 11.0 ARMS. This current level helps size the matching drive and estimate continuous torque at standstill. Rotor commutation is handled by a three-phase Hall sensor, which supports trapezoidal current control without an auxiliary encoder. The stainless-steel output uses a round shaft for couplings that clamp onto the shaft surface rather than use a key. The magnetic stack uses a stack length multiple 3 layout, which increases flux linkage and torque density while keeping the diameter unchanged.

Cabling is provided as flying leads with AMP connectors, so power and feedback can be connected without soldering in tight panel spaces. This arrangement supports straightforward cable routing on moving axes where separate junction boxes would take more space. A shaft seal is integrated at the output journal to help limit lubricant migration and dust entry around the bearing area. Thermal protection is provided by a PTC thermistor embedded in the stator. As winding temperature rises toward its limit, the thermistor resistance increases sharply and provides a clear overtemperature signal to the drive.