S22HNAA-RNNM-00 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific S22HNAA-RNNM-00 is a 6-pole Neodymium magnet brushless servo motor from the S Brushless Motors series. It features a continuous stall torque of 1.0 Nm, peak torque of 2.64 Nm, and uses a size 21 frameless resolver for primary feedback. This motor has a NEMA 23 frame size, weighs 1.9 kg, and includes a 24V DC holding brake.
Internal Product Review
The S22HNAA-RNNM-00 is a Pacific Scientific 6-pole neodymium magnet brushless servo motor configured in a NEMA 23 frame. Continuous stall torque of 1.0 Nm and peak torque of 2.64 Nm give the motor a very capable range for precise motion applications. A size 21 frameless resolver and 24V dc brake add dependable feedback and holding performance, making this an excellent servo motor package.
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Product Description:
The S22HNAA-RNNM-00 is a 6-pole neodymium magnet brushless servo motor manufactured by Pacific Scientific as part of the S Brushless Motors series. Designed for closed-loop motion stages, conveyors, and pick-and-place axes, the S22HNAA-RNNM-00 converts commanded current into regulated shaft torque for precise industrial automation tasks. It uses a NEMA frame mounting pattern so it fits standardized machinery envelopes, and its Size 21 frameless resolver supplies primary position feedback to the drive. This feedback arrangement supports commutation and closed-loop control during repeated starts, stops, and speed changes.
At standstill, the motor can deliver a continuous torque of 1.0 Nm, while transient demands are met with a peak capability of 2.64 Nm. Torque is proportional to current at a rate of 0.3 Nm/ARMS, so the drive can estimate load demand directly from phase current. Electrical response is shaped by a line-to-line inductance of 5.7 mH and a resistance of 4.2 Ohms, which affect the electrical time constant and copper loss during servo regulation. A back-EMF slope of 0.19 VRMS/rad/sec matches the six-pole stator and H winding, helping the motor operate with 120 VAC bus drives while maintaining predictable voltage behavior as speed rises.
Rotor inertia is only 0.064 × 10⁻³ kg·m², which helps the motor respond quickly to speed and position commands without unnecessary peak current. The motor has a mass of 1.9 kg, and it uses a compact NEMA 23 frame based on the two-stack lamination length. For static positioning or controlled shutdown, a 24 V DC brake can lock the shaft, and the lack of a shaft seal reduces drag in clean operating environments. Motor power and resolver leads exit through a motor-mounted MS connector, and the design omits secondary feedback devices so cable routing remains straightforward.
