SR-A0.0009.060-04.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SR-A0.0009.060-04.000 is part of the SR Synchronous Servo Motors series and features an IM B5 construction type with a flange width of 55 mm. This servo motor has a holding torque of 1.0 Nm, a shaft size of 9 x 20 mm, and a rated speed of 6000 revolutions per minute. It weighs 1.78 kilograms, has a protection rating of IP67, and provides feedback through a resolver with 8192 increments per revolution.
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Product Description:
The SR-A0.0009.060-04.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. In industrial automation, it acts as a compact rotary actuator that delivers repeatable torque and speed for pick-and-place modules, indexing stations, and light machining heads requiring precise closed-loop motion. Its IM B5 face-mount design allows the motor to be bolted directly to a frame plate, minimizing the installation footprint. The compact housing also supports applications where available mounting space is limited but accurate speed and position control remain necessary.
The housing carries an IP67 protection rating, so the stator windings and resolver remain sealed against dust ingress and temporary immersion during washdown cycles. At a rated speed of 6000 rpm, the motor can follow high-cycle command profiles, while its torque constant of 0.73 Nm/A allows the controller to calculate current demand for each acceleration ramp. Position feedback is produced by a resolver that delivers 8192 increments per revolution, providing fine angular resolution for servo control loops. Mechanical integration is simplified by a flange width of 55 mm, which matches many micro gearboxes and keeps the 9 × 20 mm shaft centered with minimal runout. A locked-rotor current of 1.3 A develops 0.95 Nm of stall torque, providing values that can be used to set overload protection. The motor has an overall body length of 220 mm, allowing its complete axial envelope to be considered when arranging nearby couplings and machine components.
For holding duties, an electromagnetic brake engages automatically when power is removed, preventing the shaft from turning under a static load. The brake releases at 24 V while drawing 0.5 A. When the brake is engaged, it secures the shaft with 1.0 Nm of holding torque so vertical loads do not drift. A rotor inertia of 2.5 × 10⁻⁵ kg·m² supports fast reversals with limited overshoot, and an assembly mass of 1.78 kg keeps moving elements light in multi-axis gantries. The shaft can connect to timing pulleys, harmonic drives, or other compact transmission components used in positioning systems.
