Product Description:

The PMA43R-10100-00 is a brushless servomotor manufactured by Pacific Scientific as part of the PMA Brushless Motors series. It is designed for closed-loop positioning and speed control in automated packaging, handling, and assembly equipment. By converting drive current into precise rotary motion, the motor allows actuators to follow programmed trajectories with minimal tracking error. The unit is supplied without an internal brake, so load holding during power-off must be provided by the drive or an external mechanical device.

Its continuous stall capability of 6.1 Nm is the torque that can be applied indefinitely without excess heating, which helps maintain axis stiffness during long dwell periods. For short accelerations, it reaches a peak of 21.7 Nm, enabling rapid index moves before thermal limits intervene. A rotor inertia of 0.52 kg·m² × 10⁻³ balances responsiveness with stability, reducing overshoot when command direction changes. At rated stall, the windings draw 11.0 ARMS, so the connected amplifier must supply this current continuously to deliver full torque output without foldback.

To support those torque values, the motor frame weighs 7.6 kg, providing thermal mass for steady operating temperatures during repeated motion cycles. The windings are built for a 240–480 V AC supply range, allowing use with common industrial power systems. A square frame of 115 mm side length matches standard mounting patterns, and the power connector exits in a right-angle direction so cable bundles can stay close to machine walls. Mechanical power is transmitted through a closed keyway with a fitted key shaft, which helps prevent slip between the shaft and hub during repeated acceleration cycles. Internally, a three-stack lamination length increases the magnetic path without enlarging the external footprint.