Product Description:

The SF-A3.0068.030-04.015 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SF Servo Motors series. This motor converts controlled electrical energy into precise rotary motion, allowing machine tools, pick-and-place axes, and material-handling stations to regulate speed and position under closed-loop feedback. By integrating an electromagnetic holding brake and internal temperature monitoring, the unit is intended for duty cycles that require rapid stopping and continuous thermal supervision.

Under continuous operation, the rotor reaches a nominal speed of 3000 rpm, which suits common inverter-based motion systems. Torque production scales with current at a constant of 1.36 Nm/A, so each ampere delivered by the drive contributes predictable mechanical torque. The power section is referenced to a DC link potential of 670 V, placing the motor in high-voltage multi-axis systems where bus energy is shared. A circular flange measuring 116 mm follows IEC dimensions, and the IM B5 mounting style places the motor face against the machine for compact installation. When stalled, the shaft can deliver a locked-rotor torque of 6.8 Nm while drawing 5.0 A, which helps overcome static friction during startup.

The integrated holding brake secures loads with a static capacity of 10.0 Nm and is energized by a supply of 24 VDC that draws only 0.66 A during engagement. Brake residual torque ripple stays within 5% to help maintain smooth holding force, and the dedicated brake mass is 0.6 kg, adding minimal weight to the assembly. Overall kinetic behavior is governed by a rotor inertia of 11 × 10⁻⁴ kg·m² and a separate brake inertia of 1.06 × 10⁻⁴ kg·m², allowing motion controllers to tune acceleration profiles accurately. Two embedded NTC sensors relay winding temperature so the drive can reduce current before excessive heating occurs.