Product Description:

The SR-A0.0009.060-14.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. It supplies finely regulated rotary motion for tasks such as pick-and-place heads, compact gantries, and small machining spindles, where closed-loop torque and speed control are required for repeatable automation cycles. A resolver mounted on the shaft delivers continuous position feedback, allowing the drive to correct positional errors in real time. This feedback also supports stable operation during rapid changes in speed or load.

The motor bolts to a 55 mm square flange, and its shaft can rotate continuously at 6000 rpm without exceeding thermal or mechanical limits. The electromagnetic design provides a torque constant of 0.73 Nm/A, allowing output torque to be estimated directly from phase-current commands. The enclosure is rated at IP67, protecting the stator and bearings against dust ingress and temporary liquid immersion. A low rotor inertia of 0.25 × 10⁻⁴ kg·m² supports fast acceleration and reduces settling times when the axis reverses direction. The motor also has a 9 mm diameter by 20 mm keyed shaft. Its overall length is 220 mm when the holding brake is installed.

The permanent-magnet brake delivers 1.0 Nm of static torque, keeping vertical or indexed loads locked when power is removed. It operates from a control supply of 24 VDC, and its coil draws a rated current of 0.5 A. During startup or a stall, the stator can supply a locked-rotor current of 1.3 A and produce up to 0.95 Nm of torque until motion begins. The complete assembly weighs 1.78 kg, minimizing moving mass on lightweight axes. Resolver feedback provides a mechanical accuracy of ±10 arc minutes and supports 8,192 digital increments per revolution. This level of feedback allows the connected drive to maintain smooth velocity regulation across the motor’s operating speed range.