Product Description:

The S32HSNA-RNNM-03 is a six-pole neodymium magnet brushless servo motor manufactured by Pacific Scientific and supplied within the S Brushless Motors series. This motor converts electrical power from a drive into controlled rotary motion for indexing, positioning, and velocity-regulated axes in automated machinery. A size 21 frameless resolver serves as the primary feedback device, allowing the drive to monitor rotor position without an optical encoder. Electrical power and resolver leads exit through a motor-mounted MS connector, which keeps the connection layout compact and supports quick cable removal when the motor must be disconnected.

At the shaft, the motor can deliver a continuous stall torque of 4.0 Nm, while short load surges are supported by a peak torque of 11.3 Nm. Torque production per ampere is set by a constant of 0.7 Nm/ARMS, which helps match current demand to axis loading. The line-to-line resistance is 1.6 Ohms, and the winding inductance is 4.5 mH, so the drive sees predictable electrical behavior during current control. The voltage constant is 0.44 VRMS/rad/sec, which gives the amplifier a clear back-emf relationship across the operating range. These values support stable servo response during acceleration, deceleration, and steady-speed operation.

The housing follows the NEMA 34 frame standard, so it fits commonly used mounting hardware for this motor class. Overall mass is 4.9 kg, and rotor inertia is 0.34×10⁻³ kg·m², which helps the axis respond quickly when paired with an appropriate drive and load. The two-stack lamination length adds magnetic path length without making the motor excessively heavy. The unit is supplied without a holding brake or shaft seal, so it is best suited for protected installations that already use external load holding and enclosure-based contamination control.

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