What the 1FK7042-5AF71-1FA2 actually is
The 1FK7042-5AF71-1FA2 is a Siemens SIMOTICS S-series brushless synchronous servo motor in the 1FK7 frame family, the compact high-dynamic servo used across Siemens SINAMICS S120 drive systems on packaging, machine-tool, and pick-and-place lines. The shaft, encoder, and brake options are encoded in the 5AF71-1FA2 suffix — that's what a buyer cross-references when matching a replacement against the BOM.
