Product Description:

The S34HNNA-RNNM-00 is a 6-pole neodymium magnet brushless servo motor manufactured by Pacific Scientific for the S Brushless Motors series. It serves as a torque source in industrial automation, driving axes that demand repeatable positioning and speed control. A size 21 frameless resolver is integrated for primary feedback, allowing the connected drive to close the position loop and keep the rotor synchronized with commanded motion profiles.

The motor delivers a continuous stall torque of 6.6 Nm, giving machinery stable holding capability at zero speed without thermal overload. When rapid acceleration or short load shocks occur, the electromagnetic stack can reach a peak of 25.3 Nm for limited durations. Current-to-torque conversion is characterized by a constant of 1.1 Nm/ARMS, so the drive can estimate the required phase current for a commanded load. Winding inductance is 5.9 mH, which moderates current ripple and helps filter high-frequency switching noise in the inverter. The line-to-line resistance of 1.8 Ohms sets copper losses and influences steady-state heating. A back-EMF constant of 0.68 VRMS/rad/sec indicates the voltage the windings generate per unit speed, which helps with bus voltage selection for full-speed operation.

The rotor inertia is 0.64 kgm^2 x10^-3, enabling fast speed changes with minimal servo lag, and the overall assembly weighs 8.1 kg, which supports handling during NEMA-frame mounting. The housing matches the NEMA 34 frame size and follows the standard bolt pattern, which helps it fit common mounting layouts. A four-stack lamination increases magnetic path length without making the frame excessively long. Terminations are routed through a motor-mounted MS connector, and winding code H identifies the thermal class. The unit is supplied without a holding brake or shaft seal, and no secondary feedback device is present.