Product Description:

The PMA42N-00100-00 is a brushless servomotor produced by Pacific Scientific within the PMA Brushless Motors series. Designed as a rotary actuator for closed-loop positioning and velocity control, the unit converts electrical energy into precisely metered mechanical rotation. It is suited for packaging machines, material-handling axes, and other automated stations that require accurate speed regulation and repeatable motion. Its brushless design supports clean commutation and consistent servo response over repeated cycles.

At a continuous stall torque of 4.1 Nm, the motor can hold or drive a load indefinitely without exceeding its thermal limits. When brief surges are required, it delivers up to 14.6 Nm of peak torque for rapid acceleration or disturbance rejection. A rotor inertia of 0.36 kg·m² × 10⁻³ supports a balance between quick response and stable motion. Under nominal stall conditions, the winding draws 3.8 ARMS to reach full rated loading. The winding is intended for the 240-480 V AC class, allowing connection to common industrial drives. Power enters through a 6PP (6-Pin Power) plug that separates the phases and protective earth for straightforward field wiring. A resolver on the shaft supplies analog sine-cosine feedback so the controller can close high-resolution position loops. Two lamination stacks in length code 2 form the electromagnetic core and support the stated ratings.

The square frame dimension of 115 mm eases mounting to standard NEMA patterns, and all electrical terminations exit through a right-angle header that helps reduce required cabinet depth. This layout also helps when cable routing space is limited near the motor face or adjacent machine guards. With a mass of 6.2 kg, the assembly adds minimal inertial load to linear stages while still providing useful thermal mass for continuous duty. A smooth shaft simplifies coupling to gearboxes or pulleys, and the motor is supplied without a brake for systems that already use another holding method. No additional special features are fitted, so the configuration remains focused on the standard motor, feedback, and connection arrangement.