Siemens 1FK7062-2AF71-1QA0 SIMOTICS S 1FK7-CT 1.9kW 8.5Nm 3000rpm Servo Motor

The Siemens 1FK7062-2AF71-1QA0 is a SIMOTICS S 1FK7-CT synchronous servo motor rated 1.9 kW, 8.5 Nm standstill torque (M0, 100K), and 3000 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 1FK7062-2AF71 winding sits mid-range in the 1FK7062 frame's speed options at 3000 rpm, with a 1.60 Nm/A torque constant and 91.0% efficiency. It ships without a holding brake, at 11.200 kgcm² moment of inertia and 37,000 Nm/rad shaft torsional stiffness. A lower-speed, higher-torque-constant winding and a higher-speed, lower-torque-constant winding are both also available in the 1FK7062 frame; this mid-speed point balances current draw against throughput. At 4.0 A rated current and a 12.80 ms electrical time constant, it sizes comfortably against mid-range drive current ratings. The 1.49 ms mechanical time constant and 35-minute thermal time constant are both verified for this winding, useful for evaluating settling time and duty-cycle thermal margin in mid-speed positioning tasks.

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. At 3000 rpm and 91.0% efficiency, it fits general-purpose ball-screw and belt-driven axes in the mid-speed range.