What this part is and where it sits on the line
The 1FK7042-5AK71-1UG3: Its native deployment is a machine-tool feed axis, a packaging-line servo loop, or a small-robot joint driven from a SINAMICS S120 or SIMATIC-controlled power module — the motor housing bolts to the gearbox or coupling and the encoder/resolver cable lands at the drive, not the controller.
Lifecycle status and what it means for a BOM line
For a procurement line already named against this code, the practical move is to lock last-time-buy stock now or qualify a current-production SIMOTICS S-1FK7 successor with the same shaft height, resolver/encoder stack, and brake option — pin compatibility is not assumed across the dash-code suffix. Quotations on EOL/hot stock are confirmed at RFQ through independent distribution; availability is lot-specific and pricing reflects the remaining channel inventory.
Handling and panel-side notes for a 4.54 kg servo
The lead dressing on a 1FK7 motor is short and angled; when pulling the unit for swap, support the cable harness so the drag does not kink the insulation at the connector strain relief — that kink is the most common field-reject cause on a like-for-like replacement.