Product Description:

The SR-A3.0068.030-00.015 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the SR Synchronous Servo Motors series. The unit interfaces with drive electronics to deliver precise, rapid positioning in automated assembly cells, packaging lines, and material-handling stations where repeatable torque and speed control are critical. Its compact IM B5 flange configuration allows direct mounting to gearboxes or machine frames, while the resolver feedback loop keeps the shaft synchronized with motion profiles generated by the controller.

The motor’s mechanical interface starts with a flange that measures 116 mm across, establishing a stable mounting footprint and aligning the shaft concentrically within the machine housing. Under command, the rotor can accelerate to a rated speed of 3000 rpm while maintaining sinusoidal current control from the drive. If the shaft is prevented from turning, the motor delivers a locked-rotor torque of 6.8 Nm and draws 5.0 A from the power stage; these values indicate the stall limits used during holding or indexing operations. Continuous torque production scales predictably because the electromagnetic design provides 1.36 Nm/A of torque for every ampere of phase current, simplifying drive parameterization and thermal assessment of duty cycles.

Dynamic response is influenced by a rotor inertia of 11 × 10⁻⁴ kg·m², a value low enough for quick acceleration yet high enough to damp minor load disturbances. Position data are returned through a resolver that provides 8192 increments per revolution, giving drives fine granularity for velocity loops. The motor weighs 9 kg, and its 19 mm diameter shaft extends 40 mm beyond the flange. The shaft accepts an A6 × 6 × 32 feather key for positive coupling to compatible mechanical components. The overall housing length is 255 mm, leaving sufficient space for encoder cabling in typical machine installations.