Product Description:

The servo motor identified as S32HNAA-RNNM-00 is manufactured by Pacific Scientific and belongs to the S Brushless Motors series. It is a 6-pole neodymium magnet brushless unit intended for closed-loop motion tasks in industrial automation, where repeatable torque delivery and quick speed changes are required for material handling stations, indexing tables, and light process tooling. A size-21 frameless resolver provides primary feedback, connections exit through a motor-mounted MS connector, and the design omits a shaft seal for installations kept free of coolant spray.

The motor can sustain a continuous stall torque of 4.0 Nm, meaning it can hold that torque indefinitely at zero speed without overheating when mounted to a rated heat sink. For short acceleration bursts, it reaches a peak capability of 11.3 Nm, providing the headroom needed to overcome inertial loads or break static friction. Its torque constant is 0.7 Nm/ARMS, so each ampere of RMS phase current produces 0.7 N·m and simplifies current loop scaling in the drive. A line-to-line resistance of 1.6 ohms limits steady-state current at a given bus voltage and influences thermal loss. The winding inductance of 4.5 mH shapes the electrical time constant that the drive must regulate during current transients. The 24 V DC brake secures the shaft when power is removed, and an H-type winding lets the frame achieve these ratings on standard bus voltages.

Dynamic response is assisted by a rotor inertia of 0.34 kgm² × 10⁻³, allowing fast acceleration without demanding excessive drive current. Back EMF is characterized by a voltage constant of 0.44 VRMS/rad/sec, which the controller uses for speed estimation during high-rate moves. Overall mass is 4.9 kg, which keeps the motor light enough for axis slides while still helping reduce vibration. The mechanical interface follows the NEMA 34 mounting envelope, so the two-stack frame fits readily into machines that already use standard NEMA 34 brackets.