SR-A3.0068.030-10.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SR-A3.0068.030-10.000 is a servo motor from the SR Synchronous Servo Motors series and features a flange size of 116 mm and a shaft size of 19 x 40 mm. It delivers a locked-rotor torque of 6.8 Nm and a rated speed of 3000 min^-1, with a mass of 9 kg. The motor uses a resolver feedback type with a resolution of 8192 increments per revolution.
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Product Description:
The SR-A3.0068.030-10.000 is a synchronous servo motor produced by Bosch Rexroth Indramat and supplied within the SR Synchronous Servo Motors series. It serves as an electromechanical actuator in positioning axes where a drive controller regulates current and velocity. By converting commanded electrical energy into controlled rotary motion, the motor supports repeatable indexing, tensioning, and traverse duties in industrial automation lines. It integrates with standard power and feedback cabling for straightforward installation in compatible systems.
The motor’s resolver feedback provides a positional accuracy of ±10 angular minutes and reports position at 8192 increments per revolution, allowing the drive to maintain precise velocity and position control. This resolver is mounted on a face with a 116 mm flange outline, so the motor fits standardized gearheads or machine plates. When the motor is supplied without a holding brake, the overall housing length is 255 mm, which helps preserve a compact machine layout. The locked-rotor condition draws only 5.0 A, which helps limit peak current demand on the inverter. Power is transmitted through a smooth shaft with a diameter of 19 mm and a length of 40 mm, which avoids keyway stress concentrations while maintaining torsional stiffness.
Acceleration behavior can be estimated from the rotor inertia of 11 × 10⁻⁴ kg·m² together with the motor’s locked-rotor capability. The motor can sustain 6.8 Nm of torque at zero speed, supporting static holding in tension or indexing stations. With a mass of 9.0 kg, the assembly can be mounted on moving carriages without adding excessive structural load. Under drive control, the shaft reaches a rated speed of 3000 rpm, and each ampere of commanded current produces 1.36 Nm/A of torque for predictable drive tuning.
