SR-A4.0172.030-10.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SR-A4.0172.030-10.000 is part of the SR Synchronous Servo Motors series and has a mass of 19 kilograms without brake. It features a flange width of 142 mm and a shaft diameter of 24 mm with a length of 50 mm. This model has a DC link voltage of 670 V and a feedback resolution of 8192 increments per revolution, using a resolver feedback type.
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Product Description:
The SR-A4.0172.030-10.000 is a synchronous servo motor built by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. Designed for closed-loop positioning and velocity control in automated machinery, the unit converts electrical energy from a drive into precise rotary motion while supplying feedback for the control loop. The resolver embedded in the stator links the mechanical output to the controller, enabling accurate coordination of axes in packaging, printing, and pick-and-place stations. Its flange conforms to an IEC square pattern, allowing direct attachment to gearboxes or machine frames without custom adapters.
The connected drive operates with a DC bus voltage of 670 V, so the converter must supply that link potential to achieve full rated performance. At the shaft, the rotor can maintain a synchronous speed of 3000 rpm, while the controller modulates current to hold the selected speed under varying loads. The motor has a torque constant of 1.38 Nm/A, indicating that each ampere of current produces more than one newton-meter of torque. Position data are returned through a resolver with a resolution of 8192 increments per revolution, providing fine feedback for motion interpolation in the drive. The square mounting flange measures 142 mm across and provides a bolt pattern that mates with standard B5 interfaces.
Locked-rotor current is 14.1 A, allowing the motor to overcome static friction and produce a stall torque of 17.2 Nm for indexing or clamping tasks. The motor weighs 19 kg, and its IM B5 frame style provides a footless, flange-mounted arrangement for vertical or horizontal installation. A rotor inertia of 40 × 10-4 kg·m² balances dynamic response with load smoothing, while two NTC temperature sensors monitor winding heat. The keyed shaft measures 24 × 50 mm, providing positive engagement with a compatible coupling. The motor has an overall length of 309 mm and does not include a holding brake, leaving sufficient room for couplings while maintaining a compact package for multi-axis assemblies.
