Siemens 1FK7060-2AH71-1QA0 SIMOTICS S 1FK7-CT 1.7kW 6Nm 4500rpm Servo Motor

The Siemens 1FK7060-2AH71-1QA0 is a SIMOTICS S 1FK7-CT synchronous servo motor rated 1.7 kW, 6 Nm standstill torque (M0, 100K), and 4500 rpm rated speed at 600 VDC bus voltage. It is naturally cooled, IMB5-mounted, and fitted with a DRIVE-CLiQ absolute single-turn 20-bit encoder (AS20DQI); this order number ships without a holding brake.

Selection Notes

This 1FK7060-2AH71 winding is the higher-speed option in the 1FK7060 frame, rated 4500 rpm at a 0.95 Nm/A torque constant, so it needs 4.3 A rated current for the same 6 Nm standstill torque offered across this frame. It ships without a holding brake, at 7.700 kgcm² moment of inertia and 40,500 Nm/rad shaft torsional stiffness. A lower-speed winding with a higher torque constant is also available in the same frame for applications where minimizing drive current matters more than base speed. Its 7.6 mH rotating field inductance and 10.90 ms electrical time constant support the faster current-loop response the 4500 rpm base speed calls for.

Applications

Natural (fan-less) cooling and IP64 protection suit compact machine enclosures without forced airflow. The DRIVE-CLiQ interface connects directly to SINAMICS S120/S210 drive systems over a single feedback cable. The 4500 rpm rated speed suits belt-driven or geared axes that need higher throughput at 6 Nm standstill torque than the lower-speed winding in the same frame.