R46GSNA-R2-NS-VS-04 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 R46GSNA-R2-NS-VS-04 is a servo motor from the R Servomotors series, featuring a 4.25 inch square frame and a stack length of 6 inches. It delivers a continuous stall torque of 7.6 Nm with a peak torque of 20.2 Nm. The motor uses rare earth samarium cobalt magnets and includes a frameless resolver size 21 as primary feedback.
Internal Product Review
The R46GSNA-R2-NS-VS-04 is a Pacific Scientific servo motor rated for 7.6 Nm continuous stall torque and 20.2 Nm peak torque. A frameless resolver primary feedback device and samarium cobalt magnet construction support precise control and consistent dynamic response. Standard housing with a Viton shaft seal makes the motor a strong choice for dependable servo service.
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Product Description:
The R46GSNA-R2-NS-VS-04 servo motor is manufactured by Pacific Scientific and belongs to the R Servomotors series. It is intended for integration with a matched drive to supply commanded shaft rotation in automated gantries, indexing tables, and machine-tool spindles. By combining rare-earth field magnets with a resolver feedback loop, the motor supports precise velocity and position control for multiaxis industrial equipment.
The motor can sustain a continuous shaft load of 7.6 Nm at standstill, which indicates its ability to hold torque without overheating when speed is zero. During rapid accelerations, it tolerates a peak of 20.2 Nm, which accommodates short-term overloads such as inertia matching or sudden load changes. Rotor inertia is specified at 0.40 kg·m²×10⁻³, and this moderate mass balances acceleration response with damping for smooth regulation. Mechanical integration is helped by the 4.25" square frame, which aligns with standard NEMA-style mounting patterns. A stack length of 6 inches increases the active iron volume and provides the magnetic path needed to reach the listed torque values while keeping the overall footprint compact.
The electromagnetic field is produced with a rare earth samarium cobalt magnet set that maintains flux density across a wide temperature range. Position feedback comes from a size 21 frameless resolver, enabling analog sine-cosine signals for high-resolution commutation. A Viton shaft seal limits particulate ingress at the output end and matches the motor’s standard housing style. The motor is delivered with no brake, so holding torque must be supplied by the drive or an external mechanical lock when power is removed. Standard windings complete the electrical package and provide a familiar resistance and inductance profile.
