Siemens 1FK7105-2AF71-1QB0 SIMOTICS S 1FK7-CT 48 Nm 3000 rpm Servo Motor with Brake

The Siemens 1FK7105-2AF71-1QB0 is a SIMOTICS S 1FK7-CT synchronous servo motor rated at 8.2 kW with a 48 Nm standstill torque at 3000 rpm nominal speed. It runs from a 600 V DC bus, mounts in IM B5 (IM V1, IM V3) configuration with Flange 1 and a rotatable power connector, carries a Drive-CLiQ absolute single-turn 20-bit encoder (AS20DQI), IP64 protection, and includes an integrated holding brake.

Technical Specifications

Selection Notes

This QB0 variant adds an integrated holding brake to the 48 Nm / 3000 rpm winding in this frame, so it holds position on a vertical or overhung-load axis when drive power is removed; where a brake is not required, the brake-less version in the same frame is the lighter option. At 39.3 kg, this is among the larger motors in this product line, so mounting and coupling hardware should be sized accordingly. The 20-bit single-turn Drive-CLiQ encoder (AS20DQI) gives absolute position feedback without a separate battery-backed multi-turn module.