Product Description:

The SR-A1.0023.060-04.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat as part of the SR Synchronous Servo Motors series. The unit is designed for precision positioning and velocity control in industrial automation systems such as pick-and-place arms, packaging machinery, and light milling spindles. By combining permanent-magnet rotor technology with resolver feedback and an integrated holding brake, the motor supports closed-loop torque delivery and rapid start-stop performance in multi-axis motion systems. Its synchronous design also helps the drive respond quickly to command changes during repeated indexing, reversal, and speed-controlled operation.

The motor reaches a rated speed of 6000 rpm, and its torque constant is 0.69 Nm/A. This combination supports fast operation while keeping current-to-torque behavior predictable for the connected axis. A square mounting interface of 70 mm simplifies attachment to gearboxes or machine frames, while the combined rotor, brake, and resolver inertia of 1.20×10⁻⁴ kg·m² supports quick acceleration without excessive drive current. Static load retention is provided by a spring-applied brake rated at 2.0 Nm, and the brake coil draws 0.4 A. Locked-rotor current is 3.3 A, and stall torque is 2.3 Nm.

Position feedback is provided by a resolver that delivers 8192 increments per revolution with an accuracy of ±10 angular minutes. The brake coil accepts a filtered supply of 24 VDC with a tolerance of ±10% and 5% ripple, which allows it to operate from common control power rails used on industrial machines. Total mass is 2.81 kg, and the overall housing length of 280 mm helps the motor fit into narrow axis carriages and other compact installations. Torque is transmitted through an 11 mm by 23 mm shaft with a keyway and feather key to help prevent slip during changing loads and repeated motion cycles.