Product Description:

Pacific Scientific builds the R35KENC-R2-NS-VS-00 for its R Servomotors series. This servo motor converts drive current into tightly regulated rotary motion, allowing indexing tables, pick-and-place arms, and packaging spindles to follow programmed position, velocity, and torque profiles inside automated machinery. It is supplied in Housing Style C with English mounting and uses a factory-assigned configuration that omits a holding brake, so mechanical retention must be furnished externally when power is removed. The motor also uses a frameless resolver for real-time shaft feedback to the connected digital drive.

The motor has a continuous stall torque of 3.8 Nm, meaning it can hold this load indefinitely without exceeding thermal limits. For short accelerations, it delivers up to 10.1 Nm, giving extra headroom for rapid starts or transient disturbances. At its rated mechanical speed of 4200 rpm, torque is supported by a Medium-High winding that lowers resistive losses while keeping current demand compatible with standard servo drives. Dynamic performance is helped by a rotor inertia of 0.13 kg·m² × 10⁻³, which is low enough to support fast following of position commands while still helping reduce minor load oscillations.

The mechanical envelope uses a 3.25-inch square frame with a 5 inch lamination stack, giving the motor a compact profile that can simplify retrofits into legacy NEMA layouts. Inside that stack, the rotor uses rare earth samarium cobalt magnets, which increase flux density and allow strong torque output from a compact package. A Viton shaft seal helps protect the internal bearings from coolant splash and airborne particulates during operation. Secondary feedback devices are not installed, so control resolution relies exclusively on the built-in size 21 resolver.