SR-A3.0068.030-00.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SR-A3.0068.030-00.000 is a servo motor in the SR Synchronous Servo Motors series with a flange size of 116 mm and a mass of 9.0 kilograms. It provides a locked-rotor torque of 6.8 Nm and a rated speed of 3000 min-1, with a shaft size of 19 by 40 mm. Its resolver offers an accuracy of plus or minus 10 arcminutes and a resolution of 8192 increments per revolution.
Internal Product Review
The SR-A3.0068.030-00.000 is a Bosch Rexroth Indramat synchronous servo motor with a rated speed of 3000 min-1 and a torque constant of 1.36 Nm/A. Resolver feedback at 8192 incr./rev. with +/-10 arcmin accuracy supports precise axis control and dependable tuning. Locked-rotor torque of 6.8 Nm and a 58 dB(A) noise level make this motor a strong, refined choice for servo applications.
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Product Description:
The SR-A3.0068.030-00.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. Designed for closed-loop drive systems, the unit converts drive current into controlled mechanical rotation so positioning tables, pick-and-place axes, and compact packaging equipment can follow repeatable motion profiles. It works with Rexroth digital drives and uses resolver feedback to provide the controller with rotor position data needed for responsive torque control in industrial automation. This makes the motor suitable for applications that require steady speed control, accurate indexing, and repeatable starts and stops over frequent duty cycles.
Mechanical connection to a machine frame is through a 116 mm square mounting flange. The 19 × 40 mm output shaft is prepared with a feather key A6 × 6 × 32 so torque can be transferred to couplings or pulleys without slip. During a stall event, the motor can withstand a locked-rotor torque of 6.8 Nm while drawing up to 5.0 A. Its torque constant is 1.36 Nm/A, allowing the drive to relate commanded current to output torque with predictable response. Under rated operating conditions, the rotor reaches 3000 rpm, and the inertia of 11 × 10⁻⁴ kg·m² supports quick acceleration with limited overshoot. Resolver feedback provides 8192 increments per revolution with an accuracy of ±10 arc-minutes. The overall body length is 255 mm, which helps the motor fit into compact machine layouts.
The shaft accepts an axial thrust of 133 N, enabling the motor to support moderate belt tension or vertical loads without overstressing the bearings. When running at nominal speed, airborne sound pressure remains below 58 dB(A), which helps reduce operating noise in enclosed equipment. The assembly weighs 9.0 kg, allowing it to be used with standard linear guides or small gearboxes without requiring extra structural support. These operating characteristics suit compact motion assemblies where load control and low noise are both important.
