Is 1FK7043-7AK71-1EH0 still in active production?
Siemens 1FK7043-7AK71-1EH0 sits in the EOL hot lifecycle stage, which means the line is winding down rather than running unrestricted — any new-build using this code needs to be specified with the supply window in mind. The part belongs to the 1FK7 high-dynamic synchronous motor family. A synchronous servo from this family feeds a SINAMICS drive and lives on the same EtherCAT or PROFIdrive bus as the rest of the axis — distributed-clock sync across the cell is what determines whether a flying-saw or a coordinated transfer actually cuts on the mark. Build the BOM around the drive firmware version, not just the motor code, because a late-state part still has to clear the drive's auto-configuration step on first commissioning.
What does the 3.08 kg figure mean on the shop floor?
Panel-side, the motor is sized for the standard 1FK7 mounting footprint and mates to the SINAMICS S120 drive family via a DRIVE-CLiQ or power-and-signal connector combination specific to the 1FK7 high-dynamic frame — confirm the connector stack on the replacement before the line goes back together.
Sourcing posture and peer cross-reference
Because the lifecycle stage is EOL hot, the open question is not whether the part works but whether it can be obtained cleanly — and at what volume.