Product Description:

The PMB33C-00200-03 is a brushless servomotor produced by Pacific Scientific as part of the PMB Brushless Servomotors series. Within motion-control architectures, it supplies closed-loop torque and velocity so actuators, index tables, or gantry axes reach commanded positions with minimal lag or overshoot. Its body follows the dimensional envelope used across the series, allowing installation in standard mechanical layouts while providing higher continuous torque from the same frame size. This layout suits positioning axes that require repeatable acceleration and stable low-speed control.

The motor is built on a NEMA Size 34 frame, which fixes the flange pattern and shaft height for standard U.S. drive interfaces. Under worst-case stall at 240 VAC, the phase current reaches 3.8 ARMS; this rating helps with drive sizing so current-loop headroom remains available without triggering protective trips. A Resolver supplies rotor position feedback, and its analog signal offers noise immunity in high-EMI cabinets while keeping latency low for tight servo gains. Power and signal conductors exit as flying leads with MS connectors, so pre-terminated harnesses can be connected without field soldering. The output shaft is machined with a flat, allowing rigid coupling with set-screw hubs while helping prevent rotational slip during reversals.

Factory customization adds a shaft seal and PTC thermistor; the seal limits lubricant ingress at the bearing while the thermistor sends winding-temperature data to the drive. The magnetic stack is three laminations long, expressed by a stack length multiple of 3, so torque density increases without changing the mounting footprint. The unit is a PMB Series Brushless Servomotor and integrates readily with SC900 digital drives. This combination of thermal monitoring and shaft sealing supports continuous-duty service in locations with oil mist or elevated temperatures.