SR-A5.0250.020-10.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SR-A5.0250.020-10.000 is part of the SR Synchronous Servo Motors series and features a resolver feedback type with an accuracy of ±10 angular minutes and a resolution of 8192 increments per revolution. The motor has a flange size of 190 mm, a smooth shaft measuring 32 by 58 mm, and delivers a locked-rotor torque of 23 Nm at a locked-rotor current of 10 Arms. Its rated speed is 2000 min^-1 and it has a mass of 24 kilograms with a shock resistance of 6 g.
Internal Product Review
The SR-A5.0250.020-10.000 is a Bosch Rexroth Indramat synchronous servo motor with resolver feedback and 8192 incr./rev. resolution. Rated speed to 2000 min^-1 and a 2.3 Nm/A torque constant support efficient dynamic response in servo axes. A 20,000 h bearing life makes the unit a strong choice for dependable long-term service.
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Product Description:
The SR-A5.0250.020-10.000 synchronous servo motor is produced by Bosch Rexroth Indramat for the SR Synchronous Servo Motors series. Designed for rigid coupling to ball screws, belts, or gearboxes, it converts three-phase drive output into precise rotary motion wherever accurate speed and torque regulation are required. Integrated position feedback allows CNC controllers and PLCs to close their control loops without external transducers. The motor can support positioning, transfer, and speed-controlled applications that require responsive motion under changing loads.
The motor’s mechanical interface centers on a 190 mm square flange, providing sufficient face area for secure attachment and resistance to application side loads. When the rotor is locked, the windings can draw up to 10 A RMS and generate a stall torque of 23 Nm; these values support drive sizing for static holding or vertical axes. Rotor position is reported by a resolver that divides one revolution into 8,192 increments per revolution while maintaining feedback accuracy within ±10 angular minutes, enabling the controller to maintain tight following-error limits. Rolling-element bearings have a service life of 20,000 hours, supporting extended operation on production machinery. The bearing arrangement also carries the radial and axial forces produced by properly aligned couplings and driven components.
During continuous duty, the shaft operates at a rated speed of 2,000 rpm, matching common spindle and transfer-line requirements. The rotor has an inertia of 83 × 10⁻⁴ kg·m², supporting responsive acceleration and stable servo tuning. The complete motor weighs 24 kg, and its 300 mm body length allows installation where deeper frames could interfere with machine guarding. Output torque is transmitted through a smooth shaft measuring 32 mm in diameter and 58 mm in length, which accepts shrink-disc or clamp couplings to minimize backlash. A shock resistance of 6 g protects the magnetic stack and feedback components from incidental impacts during handling or abrupt machine stops.
