Product Description:

The SR-B4.0125.060-00.000 synchronous servo motor is produced by Bosch Rexroth Indramat as part of the SR Synchronous Servo Motors series. Designed for industrial positioning and velocity control, the unit converts drive output into precise mechanical rotation. It is suited for packaging stations, pick-and-place arms, and similar automation tasks where repeatable speed and position response are required.

This model reaches a rated speed of 6000 rpm, allowing fast cycle execution when paired with a suitable inverter. During static torque production, the windings draw up to 19 Arms, a value used to size the matching drive and motor cabling. The shaft diameter is 24 mm with a k5 tolerance, and the pilot measures 130 mm j6 to align the housing on mating flanges. A motor length of 277 mm allows the unit to fit compact machine spaces while providing the required magnetic stack depth. Power is delivered through a 4 × 2.5 mm² cable terminated at a size 1, 6-pin motor connector, which supports current transfer while remaining flexible enough for dynamic cable routing. Mechanical coupling uses a keyway with an A8 × 7 × 40 feather key, and the shaft face includes a DIN 332-DS M8 center hole for alignment or draw-bar tooling.

Heat is removed solely by natural convection, so no external blower or liquid circuit is required. The motor has a mass of 16 kg, which supports use in compact axis assemblies without adding unnecessary bulk. Feedback to the drive is provided by a resolver, allowing the control system to monitor rotor position during operation. The housing uses the IM B5 mounting style, so the flange supports installation on the machine while the rear remains available for cable routing. The keyway interface, pilot diameter, and center hole support direct connection to gearboxes or belt pulleys without additional adapters.