SR-A5.0460.020-00.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SR-A5.0460.020-00.000 is part of the SR Synchronous Servo Motors series and features a flange size of 190 mm and a motor length of 383 mm. It has a rated speed of 2000 min-1 and a locked-rotor torque of 46 Nm. The motor weighs 35 kg, uses a resolver encoder type with a resolution of 8192 increments per revolution, and includes two NTC temperature sensors.
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Product Description:
The SR-A5.0460.020-00.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the SR Synchronous Servo Motors series. As a rotary drive element for industrial automation, it converts drive current into controlled torque and speed. This operation allows machine axes to execute precise positioning movements or follow velocity commands in packaging, metal-cutting, and material-handling machinery.
The motor uses an IM B5 mounting configuration, placing its flange directly against a machine wall. Its 190 mm bolt circle supports accurate alignment under load. Under nominal operating conditions, the shaft turns at 2000 rpm, a speed suited to medium-inertia applications that require a balance between response and dwell time. Torque increases in proportion to phase current at a rate of 2.2 Nm/A, simplifying drive adjustment for the connected load. During startup, the rotor can deliver a locked-rotor torque of 46 Nm while drawing 21 A RMS, providing relevant values for inverter and overload protection selection. Dynamic response is influenced by the rotor inertia of 166 ×10⁻⁴ kg·m², which moderates rapid acceleration changes while supporting normal indexing cycles. A rear-mounted resolver provides feedback with an angular accuracy of ±10 arcminutes and a resolution of 8192 increments per revolution, allowing precise commutation and position monitoring. Two NTC temperature sensors monitor winding heat during operation. An A10 × 8 × 50 feather key secures the hub of a pulley or coupling to the shaft.
The bearings can support an axial load of up to 380 N, allowing the motor to withstand thrust transmitted by the connected machine assembly without additional supports. Mechanical output is transferred through a stepped steel shaft measuring Ø32 × 58 mm, and its keyed journal aligns with compatible gearbox inputs and rigid couplings. The motor has an overall length of 383 mm and weighs 35 kg, providing thermal mass while keeping mounting requirements manageable. The compact frame also permits installation where axial space is limited, provided that the machine structure supports the motor securely and maintains proper shaft alignment.
