Siemens 1FK7042-5AF71-1FG0 Compact Synchronous Servo Motor

The Siemens 1FK7042-5AF71-1FG0 is a compact synchronous servo motor in the SIMOTICS S 1FK7 family, delivering 3.0 Nm of nominal torque, a maximum speed of 3,000 rpm, and 0.82 kW of input power when naturally cooled. It is designed for IM B5 mounting (IM V1, IM V3) with a power/signal connector that can rotate 270°, and it supports a Drive-CLiQ interface for integrated drive systems. The unit includes an absolute encoder with 2048 P/R (encoder A-2048), with performance potentially reduced by up to 10% due to encoder characteristics. It features a plain shaft with no holding brake and an IP64 protection rating, suitable for typical industrial environments. This model is cataloged as a Siemens spare part, and Siemens notes the successor as 1FK7 Generation 2.