Product Description:

The PMB33C-10216-02 is a brushless servomotor produced by Pacific Scientific in the PMB Brushless Servomotors series. Designed for closed-loop motion platforms, the motor converts electrical input into precise rotary output for indexing tables, gantry axes, and automated assembly stations. Within an automation cell, this unit supplies commanded torque while allowing the drive amplifier to monitor feedback and regulate speed. That operating role suits positioning tasks that require repetitive accuracy, stable response through repeated start-stop cycles, and tight velocity regulation.

As a PMB series brushless servomotor, the unit follows the mounting envelope of a NEMA Size 34 frame, so its 3.4-inch square face aligns with industry-standard gearheads and brackets. This frame format also supports use with common mounting plates and couplings in packaged motion assemblies. Under a maximum 240 VAC supply, the nominal stall current is 3.8 ARMS, which indicates the inverter current needed to hold a static load without overheating. Angular feedback is delivered through a 4096 ppr incremental encoder, providing 0.088-degree resolution per count for fine interpolated motion and smooth low-speed positioning. Power and feedback conductors exit as flying leads with MS connectors, allowing quick termination when cabinet space is limited and helping separate the motor body from bulkier connector hardware.

Commutation signals originate from the integrated digital encoder with commutation, so the servo drive can sequence phase currents without external Hall sensors. Thermal protection is built in through a PTC Thermistor, which changes resistance sharply near the winding limit and prompts the controller to reduce current before insulation damage occurs. The shaft has a round profile, simplifying coupling to clamped hubs or timing pulleys, while the magnetic stack is extended by a multiple of 3 to raise continuous torque without changing the frame footprint. Position feedback, commutation data, and winding-temperature monitoring are handled by integrated motor elements, which helps keep the surrounding drive system compact.