Product Description:

The SR-A2.0020.030-00.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. It is intended for precise position and speed regulation in automated machinery and uses resolver feedback with digital drive controllers. This feedback arrangement lets the controller track rotor position and regulate motion during acceleration, steady running, and stopping. The motor couples directly to the load through a 14 × 30 mm keyed shaft and aligns to mounting frames with a 100 mm square flange. A center hole drilled to DIN 332-DS M5 supports puller tools during installation or removal.

At its rated speed of 3000 rpm, the unit delivers continuous motion suited to indexing tables and pick-and-place axes. The electromagnetic design produces torque proportional to current with a constant of 1.5 Nm/A, which helps match the motor to a compatible drive. At startup, the motor can deliver a stall torque of 2.0 Nm while the windings draw 1.3 A, which limits stress on the power stage. Position feedback resolution is 8192 increments per revolution, so each mechanical revolution is divided into fine increments that support tight loop gains without external encoders.

The sealed construction is rated IP67, allowing temporary immersion during wash-down procedures without exposing the resolver or stator windings. With a mass of 5.5 kg and an overall body length of 198 mm, the motor can fit compact Z-axis layouts where available space is limited. Rotor inertia is 3 × 10^-4 kg·m², which supports quick speed changes while maintaining stable low-speed operation with medium-inertia loads such as belt drives. The Ø95 j6 flange pilot helps center the motor accurately on the machine interface. This compact form also helps when moving axes must limit carried mass.