Product Description:

The PMA43N-00100-00 is a brushless servomotor produced by Pacific Scientific for the PMA Brushless Motors series. It serves as a rotary actuator in automated machinery, turning electrical power from a matched drive into precise shaft motion for positioning or velocity control. By combining a permanent-magnet rotor with electronic commutation, the unit removes brush wear and supports continuous duty cycles in packaging lines, pick-and-place stations, and other motion axes that demand reliable torque and quick response. This brushless arrangement also supports repeated starts, stops, and direction changes without the maintenance associated with brush contact.

Its continuous stall capability is rated at 6.1 Nm, indicating the torque that can be held indefinitely without exceeding thermal limits when the shaft is locked. For short accelerations, the electromagnetic design can reach a peak of 21.7 Nm. A rotor inertia of 0.52 × 10⁻³ kg·m² keeps acceleration time low, allowing tight servo tuning and responsive speed changes. The winding draws only 3.8 A RMS at stall, and the voltage class of 240–480 V AC aligns with common three-phase industrial inverters. Stack length code 3 indicates the internal lamination depth used to achieve these torque values while keeping copper losses manageable.

The square frame dimension is 115 mm on each side, fitting standard motor plates, and the assembly weighs 7.6 kg for a compact installation footprint. A right-angle connector houses the sealed 6PP six-pin power interface, while position feedback is supplied by a resolver that tolerates electrical noise and high temperatures. The motor uses a smooth shaft for flexible coupling and includes no integrated brake, which suits applications that allow free back-driving. The sealed power connection and resolver feedback support reliable operation in machinery where electrical noise and limited cable space are concerns.