Product Description:

The PMB31D-00100-00 belongs to the PMB Brushless Servomotors series produced by Pacific Scientific. It is a brushless servomotor intended for closed-loop motion axes where rapid torque response and repeatable positioning are required in automated machinery, pick-and-place stages, and packaging equipment. By combining permanent-magnet excitation with electronic commutation, the motor supplies continuous torque without brush maintenance, making it suitable for servo drives that require accurate speed and position control.

The electrical interface is supplied through flying leads with AMP connectors, so terminations can be routed through tight machine compartments before connection to the drive harness. Frame dimensions match the industry-standard NEMA Size 34, allowing installation in mounts that use a 3.4-inch square flange pattern. During static load conditions, the winding draws a nominal stall current of 5.4 ARMS. That value is specified at a bus voltage limit of 240 VAC and helps match the motor to the drive’s continuous current capacity and protective fusing. The single-stack construction keeps inductance and resistance low, which shortens electrical time constants and improves servo stiffness when the PID loop is tuned for high bandwidth.

This model is a PMB Series Brushless Servomotor and is delivered in a Standard Motor configuration. Rotor feedback is provided by a rugged Resolver, giving sinusoidal position signals that remain accurate in environments with electrical noise or high temperatures. The output shaft uses a flat on its diameter, simplifying coupling to pulleys or gears without keyways. Mechanical length follows a stack length multiple of 1, so the motor achieves the required torque in the shortest housing of the series and eases integration into compact automation frames.