Product Description:

The R45GENA-R2-NS-VS-00 is a Pacific Scientific motor in the R Servomotors series that supplies commanded torque and speed for industrial positioning axes. Integrated into a closed-loop drive system, it converts electrical input from the servo amplifier into mechanical rotation. The motor is intended for applications where the drive continually corrects speed and position during operation. This supports conveyors, pick-and-place heads, and other motion modules that require repeatable servo control.

The motor has a continuous stall torque of 5.7 Nm, which is the steady torque the shaft can hold without movement at rated winding temperature. For short acceleration bursts, it can reach 15.1 Nm, giving added torque for startup friction and changing loads. Its square frame measures 4.25 inches on each side, fitting standard NEMA 42 style mounts while leaving space around the housing. Rotor inertia is 0.31 ×10−3 kg·m², which supports responsive speed changes and stable servo behavior. Rare-earth magnets made from samarium cobalt provide high flux density, and position feedback comes from a frameless resolver, transmitter type, size 21 for closed-loop commutation. The unit ships without a holding brake, uses a standard winding, and relies on a standard housing that dissipates heat through natural convection.

The motor uses English mounting threads and has a 5-inch stack length, which sets the active lamination height and overall body depth. A Viton shaft seal limits dust and oil ingress at the output end, supporting the standard housing style in light washdown areas. It fastens through the English mounting pattern directly to plates or gearboxes, and no secondary feedback device is present, which simplifies cable routing. These features keep the installation straightforward while preserving the motor's standard mechanical layout.