Product Description:

The R67BENH-R2-NS-NV-00 is a servo motor manufactured by Pacific Scientific and belongs to the R Servomotors series. As a brushless AC unit intended for industrial automation, it provides closed-loop rotary motion to positioning tables, pick-and-place axes, and other precision drives that require repeatable torque delivery and high feedback resolution. The motor is suited for applications that need smooth speed control, accurate positioning, and consistent response during repeated duty cycles. Because it is a servo motor rather than an open-loop actuator, it works with a matching drive to correct position error and maintain commanded motion under changing loads.

This model delivers a continuous stall torque of 19.9 Nm, allowing it to hold load forces at zero speed without overheating. Its housing uses a 5.75-inch square frame, so it fits standard inch-based mounting flanges in compact machinery layouts. Rotor inertia is 1.72 × 10⁻³ kg·m², which helps balance quick acceleration with stable speed regulation when coupled to moderate load inertias. The motor has a stack length of 7 inches, which contributes to the active iron volume and continuous thermal capacity. This length provides space for the active magnetic section and helps the motor sustain continuous output. The shaft end is supplied without a seal, so the surrounding machine enclosure should protect the motor from liquid ingress and heavy contamination.

For short-duration transients, the motor can reach a peak torque of 48.9 Nm, giving extra headroom for rapid indexing or for overcoming static friction at startup. Torque is produced by a rare-earth samarium cobalt magnet set, which supports strong magnetic flux at elevated temperatures and helps keep the motor compact. The mounting interface follows an English bolt pattern, allowing direct installation on inch-based machine hardware. Primary position feedback comes from a frameless resolver, transmitter type, size 21, which supplies rotor position data for closed-loop control. That feedback arrangement is often used where robust analog position signals are preferred in electrically noisy industrial settings. The motor is supplied with no brake, so any power-off holding function must be handled by the drive or by an external mechanical device. There is no secondary feedback channel, so all position sensing is handled by the resolver feedback system.