Product Description:

The SF-A3.0068.030-14.000 is a servo motor produced by Bosch Rexroth Indramat as part of the SF Servo Motors series. This unit delivers closed-loop rotary motion to indexing tables, pick-and-place heads, and other axes that require accurate speed regulation and quick positioning. An internal encoder reports shaft angle to the drive controller, while an electromechanical holding brake secures the load when input power is removed. Its layout suits automated machinery that needs repeatable starts, stops, and short positioning moves without adding a separate external brake assembly.

During continuous operation, the motor reaches a nominal velocity of 3000 rpm. With a torque constant of 1.36 Nm/A, the drive can produce useful torque with moderate current demand, which helps limit heating in the windings. Start-up performance includes a locked-rotor torque of 6.8 Nm at a locked-rotor current of 5.0 A. Dynamic response is influenced by the rotor inertia of 11 × 10⁻⁴ kg·m², which supports quick acceleration and deceleration with stable motion control. The motor has a 116 mm flange and a housing length of 294 mm, giving it a compact package for standard machine layouts. Axial thrusts up to 133 N can be transmitted through the 19 mm by 40 mm shaft without placing excessive load on the bearings.

To hold position after motion stops, the integrated brake provides 10.0 Nm of torque and is energized with 0.66 A at 24 V. The brake inertia is 1.06 × 10⁻⁴ kg·m², so it adds only a small rotating load to the servo system. Encoder accuracy is rated at ±20 angular sec, and the feedback system offers a resolution of 8 million increments per revolution for fine position control on small pitch mechanisms and direct-drive indexing tasks. The complete assembly weighs 9.6 kg, which gives the motor a solid mechanical structure while remaining practical for installation in compact automation equipment.