Product Description:

The PMA43N-11100-00 is a brushless servomotor manufactured by Pacific Scientific and supplied within the PMA Brushless Motors series. This motor is intended for closed-loop positioning and velocity control in automation axes that require high repeatability and low maintenance. By combining permanent-magnet excitation with electronic commutation, the unit delivers rapid torque response while eliminating brush wear, making it suitable for packaging, material-handling, and general machine tool tasks.

Its continuous stall capability is 6.1 Nm, which gives the drive a steady torque level for holding or slow-speed operation without overheating. During quick accelerations, the motor can reach a peak of 21.7 Nm, providing extra torque for inertial loads. A rotor inertia of 0.52 × 10⁻³ kg·m² balances responsiveness with load matching, so the servo controller can be tuned for stable motion. The three-phase windings draw a nominal stall current of 3.8 A RMS, which helps when selecting a compatible drive and overload settings. The windings are intended for a 240–480 V AC supply range. A shaft-mounted resolver returns rotor position feedback, while the closed keyway with fitted key supports secure mechanical coupling. Stack length code 3 and a 6PP power connector complete the electrical interface.

The integrated 24 V brake keeps the axis stationary when power is removed, which is useful on vertical slides or index tables. Cables exit through a right-angle connector, reducing the installation depth behind the motor and helping protect the plugs from debris. The square housing measures 115 mm on each side, allowing the motor to fit standard NEMA and metric adapter patterns while leaving clearance around adjacent hardware. The assembly weighs 7.6 kg. The square form also leaves flat mounting surfaces for adapter plates and machine brackets.