Product Description:

The SR-A2.0013.060-04.000 is a synchronous servo motor produced by Bosch Rexroth Indramat for the SR Synchronous Servo Motors series. The unit functions as a high-speed, closed-loop actuator that converts drive current into accurately controlled shaft motion, making it suitable for indexing tables, feeders, and small gantry axes that require tight velocity and position control in automated machinery. Within a servo loop, the built-in resolver supplies feedback to the drive, allowing the motor to follow commanded trajectories under variable loads.

Dynamic performance centers on a rated speed of 6000 rpm, which enables short cycle times when the motor is paired with light inertial loads. The motor has a torque constant of 0.76 Nm/A, so every ampere of phase current produces just under one newton-meter of torque. During startup, the rotor can withstand a locked-rotor torque of 1.3 Nm while drawing 1.7 A, allowing the axis to overcome static friction without stalling. The total rotational inertia, including the resolver, is limited to 2 × 10⁻⁴ kg·m², so acceleration commands can be executed with minimal lag. Position data arrive from the resolver at a resolution of 8192 increments per revolution with an accuracy of ±10 arcminutes, supporting precise interpolation at the controller. A shaft with a diameter of 14 mm and an extension length of 30 mm transfers torque to couplings or pulleys.

To secure vertical or suspended loads when power is removed, the motor incorporates a permanent-magnet holding brake. The brake provides a holding torque of 3.2 Nm when de-energized and uses a control supply of 24 VDC for release. It typically draws only 0.56 A during electrical release, keeping control power demand low. The brake adds 0.4 × 10⁻⁴ kg·m² of mechanical inertia, so it has little influence on servo response. Its power-off engagement allows the axis to maintain position without an external clamping device.