Product Description:

The PMB33F-20100-01 is a brushless servomotor from Pacific Scientific in the PMB Brushless Servomotors series. Designed for industrial automation, it converts drive current into accurate rotary motion for controlled acceleration, stable running speed, and repeatable positioning on packaging equipment, compact gantries, and light material-handling axes. Integrated position sensing allows the connected drive to regulate rotor angle during start, stop, and holding cycles, which helps the axis remain consistent through repeated motion sequences. Because the rotor is electronically commutated, the motor can deliver smooth response across a wide speed range without the brush wear associated with older DC designs.

The motor uses flying leads with AMP connectors, so power, ground, and feedback conductors can be routed directly to the matching connection point without opening the housing. Its mounting face follows the NEMA Size 34 footprint, which matches the common 3.4-inch square frame used in compact motion systems. When powered from a 240 Vac amplifier, the winding can withstand a continuous stall current of 11.0 ARMS. Rotor position is measured by a resolver, whose analog sine and cosine signals support stable feedback in electrically noisy environments. A front shaft seal helps keep dust and light spray away from the bearing area when the shaft passes through the machine wall.

The output shaft uses a square key, which gives pulleys or couplings a positive drive connection and reduces reliance on friction alone for torque transfer. The magnetic stack uses code 3, indicating a longer active section inside the motor body. That added active length increases the available magnetic interaction between the rotor and stator, which supports stronger torque production in the same general frame class. The keyed output also supports timing pulleys, rigid couplings, and small gear inputs where repeatable angular transfer is required during closed-loop operation.