Product Description:

The R45SEBA-HS-NF-NV-02 is a servo motor manufactured by Pacific Scientific as part of the R Servomotors series. It serves as the rotary actuator in industrial automation axes that demand closed-loop positioning and speed regulation. It translates commanded drive currents into repeatable mechanical motion for assembly cells, indexing stations, and light material-handling equipment. Its closed-loop operation helps maintain consistent axis behavior during repeated starts, stops, and speed changes.

The motor delivers a continuous stall torque of 5.7 Nm, which it can hold indefinitely without thermal overload. For rapid accelerations, the peak torque rises to 15.1 Nm, supporting fast cycle changes in pick-and-place or feeder duties. Rotor inertia is limited to 0.31 × 10⁻³ kg·m², allowing quick reversal while minimizing overshoot in PID control loops. The square frame measures 4.25 inches on each side, so it fits readily onto gearboxes or direct-drive plates that follow NEMA-style hole patterns. Stack length is 5 inches, producing the stated torque density without extending the footprint beyond typical cabinet depths.

A 100 V DC brake is integrated for vertical axes, clamping the shaft when power is removed and preventing load drift. Magnetic flux is generated by rare earth samarium cobalt material, which sustains torque production at elevated temperatures and resists demagnetization during peak current surges. Primary commutation feedback is supplied by Hall sensors, while fine position data comes from an incremental 1000 ppr encoder with a line-driver output. This dual-feedback arrangement enables both six-step startup and high-resolution servo control. An English mounting interface, a standard housing, and the lack of a shaft seal tailor the motor for enclosures where ambient particulates are controlled by the system designer.