SR-A4.0125.060-10.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SR-A4.0125.060-10.000 is a synchronous servo motor in the SR Synchronous Servo Motors series, with a flange size of 142 mm and a mass of 16 kilograms. It features a rated speed of 6000 min-1, locked-rotor current of 17 Amps, and a locked-rotor torque of 12 Newton-meters. This motor uses a resolver feedback system with 8192 increments per revolution and has a smooth shaft sized 24 by 50 mm.
Internal Product Review
The SR-A4.0125.060-10.000 is a Bosch Rexroth Indramat synchronous servo motor with IM B5 construction and a smooth shaft. Resolver feedback with 8192 incr./rev. resolution supports accurate commutation and dependable positioning in fast-axis service. Rated speed of 6000 min-1 and locked-rotor torque of 12 Nm give this motor an appealing balance of dynamic response and holding strength.
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Product Description:
The SR-A4.0125.060-10.000 synchronous servo motor is supplied by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. Designed for closed-loop motion axes in packaging, printing, and handling equipment, the unit converts electrical power into tightly controlled rotary movement. Its resolver feedback supports reliable commutation, allowing the drive controller to maintain the commanded position, velocity, or torque throughout operation.
For continuous operation, the motor reaches a rated speed of 6000 rpm, allowing compact stages to achieve high cycle counts without gear multiplication. Electromagnetic conversion efficiency is reflected in a torque constant of 0.71 Nm/A, so each ampere delivered by the drive contributes predictable shaft torque. During startup or stall events, the stator can draw up to 17 A, producing a locked-rotor torque of 12 Nm to overcome static friction and move loads from a stationary position. Position signals are digitized at 8192 increments per revolution, giving the controller fine resolution for small incremental moves and smooth velocity profiles. This level of feedback resolution also supports precise speed correction when the mechanical load changes suddenly.
Angular accuracy is maintained within ±10 angular minutes, a tolerance that assists with registration between coupled mechanical axes. Dynamic behavior benefits from a rotor inertia of 30 × 10⁻⁴ kg·m², balancing quick acceleration with stable regulation. The motor mounts to machinery through a 142 mm square flange and follows the IM B5 mounting arrangement, enabling direct face coupling. Its smooth shaft measures 24 mm in diameter and 50 mm in length, simplifying connection to backlash-free clamping couplings. The housing has a mass of 16 kg, providing thermal capacity during intermittent overloads while requiring adequate support from the machine frame. The body is 277 mm long, which should be considered when allocating installation clearance behind the mounting surface. A mating connector is not included, allowing suitable harness components to be selected for the cabinet wiring arrangement.
