Product Description:

The R43GCNA-R2-NS-VS-00 is a brushless servo motor produced by Pacific Scientific as part of the R Servomotors series. Designed for closed-loop motion control, it delivers controlled torque for industrial drive systems, allowing automated packaging lines, pick-and-place heads, and indexing tables to run at consistent cycles. The model’s samarium-cobalt magnet set and square frame format enable high torque density while maintaining thermal stability, making it suitable for direct mounting on machinery shafts where space is limited.

Its continuous stall capability is 3.9 Nm, meaning the shaft can hold that torque indefinitely without exceeding winding temperature limits. During acceleration or transient loading, the rotor can reach a peak of 10.4 Nm, giving reserve force for overcoming static friction or inertia mismatches. The motor body measures 4.25" square, which simplifies installation into standardized panels and brackets. Reflected load matching is aided by a rotor inertia of 0.22 × 10⁻³ kg·m², permitting quick speed changes without controller instability. A rated mechanical speed of 1500 rpm balances torque output and bearing life for medium-speed axes that run for extended duty cycles.

Position feedback is supplied by a frameless resolver transmitter so the drive receives angle data during operation, even in high-vibration conditions. Axial attachment to gearboxes or load flanges is facilitated by the NEMA Face mount pattern, while a Viton shaft seal limits lubricant ingress and particulate escape along the output journal. The laminated iron core is built to a 3 inch stack length, providing the magnetic volume required for the listed torque without increasing frame width. The motor is shipped without a holding brake, relies on a standard winding scheme, and is housed in a general-purpose enclosure suited to typical factory environments.