Sourcing posture for a hot EOL servo
The 1FK7042-5AF71-1DA3 sits on the lifecycle register as eol_hot, which means the original Siemens production line has closed and any new build is coming out of independent channel stock rather than a factory shipment. That changes the procurement conversation from "place a PO and wait the standard lead time" to "confirm what's available now, lock it under an RFQ, and plan the replacement cycle in parallel.".
Class context — where a 1FK7 servo sits in the cabinet
The 1FK7042-5AF71-1DA3 is catalogued as a Servo Motor under the broader Motors and Motor Controls tree, paired on the same BOM line with a SINAMICS-class drive that handles the commutation, brake control, and encoder feedback. Sizing the shaft and the feedback variant against the drive firmware is the actual engineering fit — the catalogue category only tells you it's the rotating half of a closed-loop axis.