Product Description:

The SR-A5.0460.020-10.016 belongs to the SR Synchronous Servo Motors series manufactured by Bosch Rexroth Indramat. It is a synchronous servo motor intended for industrial automation systems that require repeatable torque delivery and precise shaft positioning. When paired with an Indramat drive controller, the unit converts controlled DC-link energy into rotary motion and serves as the primary actuator for conveyors, pick-and-place modules, or articulated tooling. Integrated feedback electronics let the drive close velocity and position loops without additional sensors. This makes the motor suitable for axes that require controlled starts, stops, and repeatable motion over long duty cycles.

At a DC-link voltage of 670 V, the stator windings develop a locked-rotor torque of 46 Nm, which is sufficient to initiate motion under full load. The corresponding locked-rotor current is 21 A RMS, a value used when matching the motor to drive capacity and protection requirements. Once acceleration is complete, the shaft reaches a rated speed of 2000 rpm, and within this operating range the electromagnetic output follows a torque constant of 2.2 Nm/A. This torque-to-current relationship helps the drive produce predictable force during acceleration and changing load conditions. The combined rotor and encoder assembly has an inertia of 166 × 10⁻⁴ kg·m², which affects acceleration response and stopping behavior.

The resolver feedback provides angle information, and digital interpolation yields a resolution of 8192 increments per revolution with an angular precision of ±10 angular minutes. Power conductors can use cable cross sections up to 6.0 mm², while the shielded encoder pair is limited to 0.5 mm². The power connector uses size 1.25, and the resolver plug uses size 1, which helps keep cable matching straightforward on modular equipment. Two NTC temperature sensors embedded in the stator report thermal data so the drive can reduce current when winding temperature rises. Continuous thermal monitoring helps reduce the risk of overheating during frequent cycling.