Product Description:

The SR-A2.0020.060-00.000 is a synchronous servo motor from Bosch Rexroth Indramat and belongs to the SR Synchronous Servo Motors series. The unit converts drive current into controlled torque for positioning and velocity loops in packaging lines, pick-and-place axes, and other automated machinery. Its resolver feedback supports closed-loop control, while the B5 flange arrangement lets the motor couple directly to gearheads or machine frames.

During regular operation, the motor reaches a rated speed of 6000 rpm, so a controller can command high cycle rates without gear reduction. The electromagnetic design provides a torque constant of 0.74 Nm/A, translating current into turning force with predictable linearity. At standstill, the drive supplies a locked-rotor current of 2.7 A, which can be used to set current limits during startup. A compact rotor with an inertia of 3 × 10⁻⁴ kg·m² supports fast acceleration while keeping overshoot moderate. Heat is removed through radiation and natural convection, so airflow around the 198 mm housing must remain unobstructed. The enclosure has an IP67 rating except on the output side, so the windings are protected against coolant splashes and dust when the shaft interface is properly guarded.

A 100 mm flange provides a standard pilot for gearboxes or adapter plates. The stainless-steel shaft is 14 mm in diameter and 30 mm long, and it carries an A5 × 5 × 25 mm key for positive torque transfer. Its fit tolerances follow applicable DIN standards. The stator and frame have a combined mass of 5.5 kg, which reduces the supported weight on light gantries. When energized with the rotor locked, the motor can produce a standstill torque of 2.0 Nm, allowing vertical axes to resist movement under an appropriate load. The resolver provides 8192 increments per revolution, matching drive controllers that use 13-bit feedback for commutation and precise velocity adjustment.