R46SSNA-TS-ND-NV-02 Pacific Scientific
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The Pacific Scientific R46SSNA-TS-ND-NV-02 servo motor is part of the R Servomotors series and features a continuous stall torque of 7.6 Nm with a peak torque of 20.2 Nm. It has a frame size of 4.25 inches square and a standard housing style, and uses rare earth samarium cobalt magnets. This motor provides Tachsyn primary feedback and encoder secondary feedback with 500 pulses per revolution.
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Product Description:
The R46SSNA-TS-ND-NV-02 is manufactured by Pacific Scientific and belongs to the R Servomotors series. This brushless motor is intended for closed-loop motion axes that require accurate torque regulation and repeatable positioning, such as pick-and-place gantries, indexing tables, and packaging lines. By converting electrical drive commands into controlled mechanical rotation, it supports coordinated multi-axis sequences throughout industrial automation cells where positioning accuracy and steady torque response are required.
The motor delivers a continuous stall capability of 7.6 Nm, allowing it to hold loads without overheating during zero-speed dwell periods. Its square frame measures 4.25" square, a size that matches common NEMA mounting patterns for straightforward machine integration. Rotor inertia is specified at 0.40 kg·m²×10⁻³, which balances fast acceleration with stable velocity control. That inertia level helps the drive respond quickly during indexing without making the rotor overly sensitive to load disturbances. A rotor built with rare-earth samarium cobalt magnets raises the air-gap flux density, increasing torque density while resisting demagnetization at elevated temperatures. For brief transient events, the unit can reach a peak output of 20.2 Nm, giving the drive a buffer to overcome static friction or sudden process disturbances without exceeding rated current. The housing is the standard sealed style, and the motor is supplied without an integral brake, so braking duties must be handled by the drive or an external mechanism.
The motor uses separate devices for velocity and position feedback. Primary velocity feedback comes from a Tachsyn resolver that supplies analog speed data with high noise immunity, while position loops can reference an encoder with 500 ppr and a line driver for use with digital drives. Because there is no shaft seal, installation in environments free from direct liquid spray is recommended, or an external seal should be added. The magnetic stack length is 6 inches, providing the flux path needed to sustain the motor's torque output without lengthening the overall frame excessively.
Frequently Asked Questions about R46SSNA-TS-ND-NV-02:
Q: What is the continuous stall torque of the R46SSNA-TS-ND-NV-02 servomotor?
A: The R46SSNA-TS-ND-NV-02 servomotor provides a continuous stall torque of 7.6 Nm for stable load control.
Q: Does the R46SSNA-TS-ND-NV-02 servomotor include a shaft seal?
A: The shaft on this model does not include a shaft seal.
Q: What type of primary feedback does the R46SSNA-TS-ND-NV-02 servomotor use?
A: This servomotor uses Tachsyn as the primary feedback device, allowing for accurate position monitoring.
Q: What is the magnet material used in the R46SSNA-TS-ND-NV-02 servomotor?
A: The magnet material in this model is rare earth samarium cobalt.
Q: Does the R46SSNA-TS-ND-NV-02 servomotor come with a holding brake?
A: This model is produced without a holding brake, as per its factory assignment.
