S32HMAA-RNNM-00 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific S32HMAA-RNNM-00 is a 6-pole Neodymium magnet brushless servo motor from the S Brushless Motors series, featuring a continuous stall torque of 4.0 Nm and peak torque of 11.3 Nm. It has a metric mounting standard with NEMA 34 frame size, weighs 4.9 kg, and is equipped with a 24V DC holding brake. The motor uses a size 21 frameless resolver as its primary feedback device and has a termination style of a motor mounted MS connector.
Internal Product Review
The S32HMAA-RNNM-00 is a 6-pole neodymium magnet brushless servo motor from Pacific Scientific with 4.0 Nm continuous stall torque and 11.3 Nm peak torque. Metric mounting and a motor-mounted MS connector support clean integration in motion assemblies. A size 21 frameless resolver adds dependable feedback, making the motor a strong choice for responsive servo duty.
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Product Description:
The S32HMAA-RNNM-00 is a six-pole neodymium-magnet brushless servo motor manufactured by Pacific Scientific for the S Brushless Motors series. Designed for closed-loop industrial axes, it converts drive current into precise rotational motion for indexing tables, pick-and-place arms, and light conveyor sections. The motor uses H-type windings and a metric mounting interface that aligns with IEC gearboxes. A size 21 frameless resolver supplies rotor-position feedback to the drive controller, supporting accurate commutation and motion control. A 24 V DC holding brake keeps connected loads stationary when motor power is removed.
At the shaft, the unit can sustain a continuous stall torque of 4.0 Nm, providing reliable low-speed force without overheating. Momentary overloads are handled by a peak torque of 11.3 Nm, which supports brief acceleration demands and shock loads. The H winding has a torque constant of approximately 0.7 Nm/A RMS, allowing the required drive current to be calculated from the desired torque. Copper losses are affected by a line-to-line resistance of 1.6 ohms. The inductance measured between phases is 4.5 mH, which affects current ripple and servo response. These electrical values also help determine the current-loop settings required for stable motor operation across the intended speed and load range.
The back electromotive force increases at a rate of 0.44 V RMS/(rad/s), allowing the drive to account for the voltage generated as motor speed rises. A rotor inertia of 0.34 × 10⁻³ kg·m² supports quick acceleration while maintaining stable speed control. The overall assembly weighs 4.9 kg, which limits the added mass on moving structures and vertical-axis installations. The frame follows the NEMA 34 envelope while retaining a metric pilot for installation on compatible machine brackets. Motor-mounted MS connectors provide direct connection points for field wiring. A two-stack lamination arrangement increases the active magnetic material, while the lack of a shaft seal reduces friction in clean environments where external measures control contamination.
