Product Description:

The R23HENA-R1-NS-VS-00 is a brushless AC servo motor engineered by Pacific Scientific and placed within the R Servomotors series. It is intended for closed-loop industrial automation where rapid acceleration, precise velocity regulation, and compact packaging are required. By converting commanded current from a matched drive into rotary motion, the motor delivers direct shaft power for positioning tables, pick-and-place heads, and similar motion axes that favor high dynamic response over continuous-duty horsepower.

At the heart of its performance envelope is a continuous stall torque of 0.9 Nm, sufficient to hold loads steady without overheating when motion is halted. For transient move profiles, the motor can supply up to 2.54 Nm of peak torque, supporting quick index moves before thermal limits intervene. The laminated stator is wound in the factory’s High Speed configuration, so rated mechanical output is reached at 8000 RPM. Command loops remain stable because the rotor inertia is only 1.8×10⁻⁵ kg·m²; this low mass minimizes overshoot and permits aggressive gain settings. With no integrated brake, the shaft back-drives freely when the drive is disabled, a characteristic often preferred in systems that rely on software clamping rather than mechanical holding devices.

The motor has a round frame that measures 2.0" OD and is supplied in a standard housing style for use on English-unit mounts. Torque is generated with a rare-earth samarium cobalt magnet set, which provides high flux density while maintaining thermal stability. Position feedback is handled by a frameless resolver transmitter in size 15, delivering analog sine-cosine signals without the need for secondary devices. Environmental protection is aided by a Viton shaft seal that resists oil splash and helps maintain internal cleanliness during high-speed rotation. The 3-inch stack length balances torque generation against total mass, and the absence of secondary feedback reduces wiring complexity.