Product Description:

The PMA55R-10100-00 is a brushless servomotor produced by Pacific Scientific within the PMA Brushless Motors series. It is intended for closed-loop industrial axes where accurate speed and position must be maintained without the periodic maintenance associated with brushed designs. By pairing its resolver feedback with compatible servo drives, the unit supplies real-time rotor position data so automated machinery can execute repeatable moves under varying loads.

The motor supplies a continuous stall torque of 17.0 Nm, letting it hold static loads at rated current without overheating, while a peak torque of 51.5 Nm is available for short bursts during acceleration or disturbance rejection. A rotor inertia of 3.06 × 10⁻³ kg·m² balances dynamic response with load damping, supporting smooth velocity transitions. To produce the rated torque, the windings draw a nominal stall current of 11.0 ARMS, and this value helps with drive sizing and cabling selection. The windings are built for a voltage class of 240-480 V AC, allowing the motor to connect directly to mid-range or high-voltage inverters without step-down transformers. A motor body square of 142 mm sets the flange envelope and supports mechanical interchangeability with other PMA series frames. The motor does not include a brake, which helps reduce overall length and moment of inertia. Stack length number 5 indicates the lamination height used for this frame.

Total mass is 15.0 kg, a figure relevant for gantry or robot joints that must account for moving weight. Cabling exits through a right-angle connector orientation, simplifying routing in shallow enclosures, and power is delivered through a 6PP (6-pin) connector that separates line conductors from feedback wiring. The closed keyway shaft is supplied with a fitted key to ease coupling.