Product Description:

The R45GENA-TS-NS-NV-00 is an electrically commutated rotary drive produced by Pacific Scientific for the R Servomotors series. It converts commanded current into precise angular motion, enabling closed-loop positioning and speed regulation on assembly lines, pick-and-place heads, and indexing stations. The unit interfaces with digital servo amplifiers that shape three-phase stator currents, so machine controllers can coordinate multiple axes without mechanical gearing. This arrangement supports responsive motion control in applications that require repeatable starts, stops, and position changes.

The motor delivers a continuous stall torque of 5.7 Nm, allowing it to hold loads at zero speed without exceeding thermal limits. During rapid acceleration or transient disturbances, it can reach a peak torque of 15.1 Nm, giving extra headroom for starting inertia-heavy mechanisms. The motor uses a 4.25" square frame envelope that matches NEMA-style mounting holes. Rotor inertia is 0.31 kg·m² ×10⁻³, so speed changes can occur quickly with limited overshoot. Force is generated by rare-earth samarium cobalt magnets, which provide high flux density and maintain magnetic strength at elevated temperatures. The combination of torque output, compact frame size, and low inertia makes the motor suitable for dynamic servo applications.

Position information is returned through a Tachsyn transducer, which combines tachometer and resolver functions so the drive can close both velocity and position loops through a single feedback channel. The mechanical interface follows the English mounting pattern, and the magnetic stack is 5 inches long. Because the unit is supplied with no brake, stopping and hold-in-place duties must be handled by the drive or by an external mechanical lock. There is no shaft seal, so the installation should be kept free from liquid or fine particulate ingress. The design also omits secondary feedback devices, which keeps the wiring layout simpler inside the servo cabinet.