Product Description:

Pacific Scientific manufactures the R46SENA-TS-ED-NV-03 in its R Servomotors series. The unit is a brushless servo motor used in industrial automation. It delivers commanded torque and speed to positioning stages, indexing tables, or pick-and-place axes that require repeatable motion under closed-loop control.

The motor supplies a continuous stall torque of 7.6 Nm, meaning it can hold that load indefinitely without exceeding its thermal rating. During rapid acceleration or impact loading, it tolerates a peak of 20.2 Nm, giving control systems headroom for transient events. Rotor inertia is specified at 0.40 × 10⁻³ kg·m²; this low value allows quick speed changes while still smoothing minor load disturbances. A compact 4.25 in square frame simplifies mounting inside tight mechanical envelopes. The magnetic stack extends to 6 inches, adding active length that raises torque density without enlarging the face footprint. A standard housing style promotes straightforward convection cooling and avoids the need for external fins or liquid jackets.

High energy magnets made from rare earth samarium cobalt generate strong flux in a small air gap, so torque output remains consistent across a broad temperature range. Rotor position and velocity are reported through a Tachsyn transducer, allowing analog feedback loops that combine tachometer and resolver functions in one package. The motor is supplied with no brake, so holding torque during power-off must be provided by the drive or by external mechanics. For installations where light oil mist or fine dust is present, the shaft extension is supplied with no shaft seal, and additional guarding may be required. The motor uses English thread and dowel geometry on the mounting face, matching common U.S. machinery layouts.