Product Description:

The SR-A4.0230.030-00.000 is a synchronous servo motor produced by Bosch Rexroth Indramat for the SR Synchronous Servo Motors series. The unit functions as a rotary actuator that links digital drive amplifiers to mechanical loads in automated packaging, metal-cutting, and material-handling cells. By supplying commanded torque and velocity to a machine axis, it enables closed-loop motion sequences that require fast indexing and repeatable positioning. An integrated resolver delivers real-time shaft data to the controller, completing the feedback loop needed for precise industrial automation.

During continuous operation, the motor reaches a rated speed of 3000 rpm, a value selected to match common four-pole drive frequencies. If the shaft is held, it can exert a locked-rotor torque of 22 Nm, and the associated locked-rotor current is 14 A, values that indicate startup demand on the mechanics and power electronics. Electromechanical coupling is expressed by a torque constant of 1.57 Nm/A, so each ampere of phase current produces predictable drive force. For harsh environments, the housing carries a protection rating of IP67, except at the output flange, which helps block dust ingress and temporary water immersion.

The resolver provides a resolution of 8192 increments per revolution, and electrical zero deviation remains within ±10 angular minutes, giving the controller fine position granularity. Acceleration behavior is moderated by a rotor inertia of 54 × 10⁻⁴ kg·m², which balances quick response with smooth load following. Mounting aligns to a standardized flange diameter of 142 mm, while the keyed shaft projects 24 mm by 50 mm for direct coupling. With no holding brake installed, the overall length is 341 mm and the assembly weight is 25 kg, which helps keep installation manageable on gantries and articulated arms.