Siemens 1FK2105-6AF00-0SA0 SIMOTICS S-1FK2 HD 8 Nm 2.1 kW Servo Motor

The Siemens 1FK2105-6AF00-0SA0 is a SIMOTICS S-1FK2 HD synchronous servo motor with 8 Nm standstill torque, dual-rated 2.1 kW at 3000 rpm on 380-480 V and 1.26 kW at 1500 rpm on 200-240 V. It uses an absolute single-turn 22-bit encoder (AS22DQC) over a single OCC feedback cable, matched to the SINAMICS S210 servo drive.

Selection Notes

At 8 Nm and 7.7 kg this is a step up in frame size from the 1FK2104 line while keeping the same D19 x 40 mm shaft and M17 rotatable connector, so it drops into the same mechanical interface where more torque is needed. The 380-480 V rating gives double the speed and power of the 200-240 V rating at the same 8 Nm torque, so size the supply voltage to the required speed rather than torque alone. The OCC cable carries power and absolute feedback together, and because the AS22DQC encoder is single-turn absolute, the SINAMICS S210 resolves position within one revolution at power-up; multi-turn indexing axes still need a homing move.

Applications

Fits higher-torque conveyor, indexing, and small robotic axes that outgrow the 1FK2104 line, run from a SINAMICS S210 servo drive. IP64 covers dust and splash from any direction, not washdown or submersion.