Product Description:

The SR-A1.0008.060-04.000 is a compact synchronous servo motor manufactured by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. It converts electrical energy into controlled mechanical rotation for industrial axes that require rapid acceleration, accurate speed tracking, and repeatable position control. A resolver supplies closed-loop feedback to the drive, allowing it to regulate shaft position and rotational speed. An electromagnetic holding brake secures the connected load when power is removed, making the motor suitable for pick-and-place modules, small conveyors, and light machine tools.

At its rated speed of 6000 rpm, the motor delivers rapid cyclic movement. The electromagnetic circuit produces torque in proportion to current with a constant of 0.6 Nm/A, allowing the drive to calculate the expected output torque from the applied current. Rotor inertia of 0.43 × 10⁻⁴ kg·m² supports quick reversals and responsive changes in speed. The housing has a length of 200 mm and a mass of 1.61 kg, which supports installation on lightweight gantries and other compact moving assemblies. With the shaft locked, the motor withstands 0.8 Nm while drawing 1.35 A, allowing controlled operation at zero speed within its thermal limits. The resolver provides analog feedback signals that resist interference from electrical noise commonly present in industrial control cabinets.

The integrated brake clamps the shaft with 2.0 Nm of holding torque and operates from a 24 VDC supply. Its typical current draw is 0.4 A, and its inertia adds only 0.12 × 10⁻⁴ kg·m² to the rotating assembly. The resolver provides a resolution of 8192 increments per revolution, supplying precise angular data for high-gain control loops. Mechanical output is transmitted through an 11 mm diameter shaft that extends 23 mm from the housing. The shaft is machined with a keyway and fitted with a feather key so that pulleys or couplings can engage securely without slipping under load.