Product Description:

The PMB33C-10200-03 is a brushless servomotor produced by Pacific Scientific within the PMB Brushless Servomotors series. This motor is intended for industrial automation tasks that demand precise torque and speed control, such as indexing tables, pick-and-place axes, or small conveyor segments. By combining electronic commutation with permanent-magnet excitation, the unit works with a servo drive for quick response to position or velocity commands. In closed-loop motion systems, that arrangement helps the axis accelerate, decelerate, and hold commanded movement with repeatable behavior. It is commonly used where a controller must translate small command changes into smooth rotary motion without the brush wear associated with older DC servo designs.

The frame follows the NEMA Size 34 standard, so it fits common 3.4-inch mounting patterns found on mid-range machinery. At stall, the windings can draw 3.8 ARMS at 240 VAC, giving a reference for continuous torque and thermal loading. The motor has a round shaft, which supports clamp or collet couplings without keyway backlash. Rotor position feedback is provided by an integrated resolver, allowing angle detection in electrically noisy or high-temperature environments. Electrical power, resolver leads, and protective earth exit the housing as flying leads with MS connectors, which support flexible cable routing and threaded mating for vibration resistance.

Operational margins are improved by a factory-installed shaft seal and PTC thermistor. The seal helps limit coolant ingress at the shaft opening, while the thermistor gives the drive a temperature signal so current can be reduced if winding temperature rises. The magnetic core uses a 3 stack-length multiple, which increases active material and continuous torque without changing the external footprint. This longer core section helps raise output within the same mounting envelope and keeps the motor suited for compact servo axes that need steady low-speed torque. Because the sensing and sealing parts are integrated into the motor, the shaft area and feedback connection remain straightforward for machine installation.