Product Description:

The SF-A2.0020.060-10.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SF Servo Motors series. Designed as a compact rotary actuator for industrial automation, it converts modulated drive current into controlled torque and speed for axes that demand high positioning accuracy and rapid acceleration. Its IM B5 construction style allows direct flange mounting to gearboxes or machine frames in enclosed production cells. This layout suits machines that need a compact servo motor near moving tooling or inside guarded assemblies.

Electrical performance centers on a DC link that accepts 670 V, allowing the drive to deliver rated mechanical output without duty-cycle limitations. At a rated speed of 6000 rpm, the motor can supply motion to fast indexing stations, while a torque constant of 0.74 Nm/A gives the relationship between phase current and produced torque. During stall testing, the unit withstands a locked-rotor torque of 2.0 Nm with a corresponding locked-rotor current of 2.7 A. The enclosure is rated IP67 except on the output side, which resists dust ingress and temporary immersion on most of the housing. The 198 mm housing length and a smooth 14 mm by 30 mm shaft support straightforward alignment with couplings and feedback devices. Additional sealing may be needed at the coupling interface when the installation is exposed to moisture.

Position feedback is generated by a single-turn absolute encoder with accuracy and resolution of ±20 angular seconds / 8 million increments per revolution, allowing very fine positioning in closed-loop systems. Dynamic response benefits from a rotor inertia of 3 × 10⁻⁴ kg·m², which helps the motor follow rapid command changes with limited overshoot. Two NTC temperature sensors report winding temperature to the drive controller so overheating can be detected during operation. The motor has a mass of 5.5 kg, and a flange diameter of 100 mm matches standardized motor adapters. The smooth shaft geometry also helps reduce fretting when it is clamped by backlash-free couplings.