Product Description:

The R45HCNA-R2-NS-VS-00 is a brushless AC servo motor built by Pacific Scientific within the R Servomotors series. As a rotary actuator, it converts drive current from a matched amplifier into precise shaft motion for indexing tables, packaging axes, and other closed-loop automation tasks. The motor belongs to the manufacturer’s medium-frame product range and is chosen when repetitive duty cycles demand accurate torque delivery and position feedback. It is commonly used in servo systems where repeatable positioning, quick response, and stable operation are required across frequent start-stop cycles and varying load conditions.

The motor delivers a continuous stall torque of 5.7 Nm, so it can hold static loads without overheating when ventilation is limited. During acceleration, it withstands peaks up to 15.1 Nm, giving motion controllers a safety margin for rapid starts. Rotor inertia is kept to 0.31 kg·m² × 10⁻³, which shortens settling time and lets the drive use higher velocity-loop gains. A compact 4.25-inch square frame and a stack length of 5 inches allow installation inside standard machine envelopes, while the high-speed winding supports elevated base speeds when paired with appropriate bus voltages. The housing uses the standard sealed style, and the unit is supplied without a holding brake, simplifying vertical mounting where mechanical clamps are already present.

A NEMA face flange provides repeatable centering against gearboxes or adapter plates. Output torque is transferred through a precision-ground shaft protected by a Viton shaft seal that limits oil or coolant ingress. The magnetic circuit uses rare-earth samarium cobalt magnets to maintain flux density at high temperatures, further supporting dynamic duty in demanding motion cycles. Position information is generated by a frameless size 21 transmitter-type resolver, and no secondary feedback device is fitted, reducing wiring complexity and keeping the feedback package compact.