SF-A3.0068.060-00.050

The SF-A3.0068.060-00.050 is a servo motor produced by Bosch Rexroth Indramat within the SF Servo Motors series. Designed for industrial automation axes that require accurate velocity and torque regulation, the unit converts electrical energy supplied by a compatible drive into controlled mechanical rotation. Its electromagnetic construction supports rapid position cycles, making it suitable for packaging machinery, automated handling modules, and other applications where compact servo performance is required.

Mechanically, the motor mounts to a machine frame through a standard flange that measures 116 mm, allowing interchange with other motors of the same frame size. Under locked-rotor test conditions it draws 8.5 A, an indicator used by drive engineers to size current-limiting devices during start-up faults. At that stalled condition the shaft resists rotation with 6.6 Nm of torque, showing the static load the motor can hold without motion. During normal operation the windings deliver continuous speed regulation up to 6000 min⁻¹, a value that defines the maximum commanded velocity before field-weakening strategies are required. The electromagnetic design yields a torque constant of 0.77 Nm/A, so every ampere of drive current produces roughly three-quarters of a newton-meter, simplifying torque prediction in closed-loop control.

Installation dimensions are compact: the housing length without an integral brake is 255 mm, and the motor weighs 9.0 kg, light enough for robotic joints that impose strict mass limits. Power is transmitted through a shaft that is 19 mm in diameter and 40 mm long, giving sufficient surface for keyed or clamped couplings while keeping overhung moments low. These physical parameters help designers match inertia, accommodate gearheads, and calculate bearing loads without exceeding manufacturer limits.