R46SSNA-TS-MD-NV-02 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific R46SSNA-TS-MD-NV-02 is a servo motor from the R Servomotors series with a frame size of 4.25 inches square and a 6 inch stack length. It delivers a continuous stall torque of 7.6 Nm and a peak torque of 20.2 Nm, and uses rare earth samarium cobalt magnets. The motor features a Tachsyn primary feedback and comes without a holding brake or shaft seal.
Internal Product Review
The R46SSNA-TS-MD-NV-02 is a Pacific Scientific servo motor with 7.6 Nm continuous stall torque and 20.2 Nm peak torque. Rare earth samarium cobalt magnet construction and Tachsyn feedback give the motor precise response and dependable performance in servo applications.
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Product Description:
The R46SSNA-TS-MD-NV-02 is a rotary actuator manufactured by Pacific Scientific and assigned to the R Servomotors series. Engineered for industrial automation, the unit converts drive commands from a servo amplifier into controlled shaft motion so that conveyor sections, indexing tables, or robotic joints follow programmed speed and position profiles. Its electromechanical design gives machine builders a compact motor that mates with standard 4-bolt flanges and supports rapid duty cycling.
During continuous operation, the motor can deliver a stall torque of 7.6 Nm, which suits medium-inertia loads that must hold position without drift when stopped. The square mounting face measures 4.25-inch square, allowing direct replacement of earlier NEMA-frame motors on existing gearboxes or linear actuators. For short bursts, it produces up to 20.2 Nm of peak torque, enabling fast acceleration of payloads. A reflected rotor inertia of 0.40 × 10⁻³ kg·m² helps the drive close velocity loops quickly because less energy is required to reverse direction. Torque density is further increased by samarium cobalt rare-earth magnets, whose high residual flux produces stronger electromagnetic attraction than ferrite alternatives.
The standard aluminum housing simplifies thermal conduction while maintaining alignment of the laminated stack, which is 6 inches long. Rotor position is reported through a Tachsyn transducer, giving velocity feedback and incremental angle data to the servo drive for closed-loop control. Because the unit is supplied with no brake, any static holding function must be provided by the mechanical system or by drive current. The absence of a shaft seal means the mounting location should exclude fluid spray or airborne contaminants that could migrate along the shaft into the bearing cavity.
