Product Description:

The SR-A2.0041.030-10.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. It is intended for closed-loop positioning and speed control in automated machinery, where it couples directly to planetary gearboxes, ball screws, or timing pulleys. An integrated resolver provides rotor position feedback to the drive, allowing precise commutation and compliant motion control on assembly lines, packaging stations, and pick-and-place axes. This arrangement also helps the axis maintain stable motion during repeated start-stop cycles and frequent direction changes.

Mechanical mounting is standardized by a 100 mm square flange, so the motor can replace earlier SR models without frame changes. Under stalled conditions, it develops 4.0 Nm of locked-rotor torque while drawing 2.8 A, values useful for sizing holding clamps or vertical axes that must resist external load before motion starts. During continuous operation, the winding delivers up to 3000 rpm, matching medium-speed feed drives in transfer lines. With a torque constant of 1.43 Nm/A, the current loop in the controller can predict electromagnetic torque with minimal latency. The resolver delivers ±10 angular minutes of electrical accuracy across 8192 increments per revolution, which improves interpolation at low speeds. Two embedded NTC temperature sensors report coil temperature to the drive, allowing derating before insulation limits are reached.

Dynamic response is supported by a rotor inertia of 6 ×10⁻⁴ kg·m², keeping acceleration times short when coupled to light loads. The aluminum housing weighs 7.1 kg and measures 233 mm in overall length, fitting compact gantry carriages without exceeding moving-mass targets. Power is transferred through a Ø14 × 30 mm smooth shaft that minimizes fretting on clamp couplings and avoids runout associated with a keyway. The compact housing can also help when the motor is mounted on moving machine members where excess mass reduces responsiveness. Shock resistance rated at 6 g permits installation on presses or index tables where repetitive impact forces occur.