PMB33C-10114-03 Pacific Scientific
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The Pacific Scientific PMB33C-10114-03 is a servomotor from the PMB Brushless Servomotors series and features a NEMA Size 34 motor with a round shaft design. It comes equipped with flying leads with AMP connectors, a digital encoder with commutation at 2048 pulses per revolution, and supports a nominal stall current of 3.8 ARMS at 240 VAC maximum. Customization includes a shaft seal and PTC thermistor.
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Product Description:
The PMB33C-10114-03 is a brushless servomotor manufactured by Pacific Scientific. This NEMA-frame motor operates as the active mechanical element in closed-loop motion systems, turning electrical energy from a compatible servo drive into repeatable torque and precise shaft rotation. By integrating feedback and commutation information in the same housing, the unit streamlines wiring and supports straightforward installation on conveyors, gantry axes, and light machine tools where compact, high-torque operation is required. That integrated layout also reduces the number of separate external components around the motor body, which helps in tightly packed assemblies and keeps cable routing more manageable.
The motor has a frame dimension of NEMA size 34, giving it a standard 3.4-inch square flange that matches readily available gearheads and mounts. Under worst-case stall at 240 VAC, the windings draw 3.8 ARMS, a value used to size the drive current limit and cable ampacity. Rotor position is returned by a high-density optical code wheel that produces 2048 ppr, allowing the control loop to resolve small position changes at full speed. Power, Hall, and encoder conductors exit the stator as flying leads with AMP connectors, so no mating receptacles are built into the end bell. Commutation and incremental feedback share one hardware element because the sensor package is a digital encoder with commutation, which reduces component count inside the motor.
A factory-installed shaft seal and PTC thermistor helps protect the bearings from contaminants while allowing the drive to interrupt power if winding temperature rises past the sensor threshold. The rotor stack uses a length multiple of 3, which raises continuous torque without changing the frame outline. Motion is transferred through a round output shaft that mates with clamp couplings or pulleys, making it suitable for direct coupling arrangements where concentric clamping is preferred. The model is a PMB series brushless servomotor intended for moderate-inertia axes that need accurate positioning, stable feedback, and low-maintenance brushless operation.
