What is the 1FK7034-5AK71-1LG5 and where does it sit on a Siemens servo line?
The 1FK7034-5AK71-1LG5 is a Siemens-branded servo motor in the SIMOTICS S-1FK7 family, catalogued under the Servo Motors / Motors & Motor Controls tree.
Is the 1FK7034-5AK71-1LG5 still in active production?
No — the listing carries lifecycle stage eol_hot, which puts it in the late-cycle bracket where new-build supply has wound down and the part is sourced against installed-base demand rather than from the running production line. For a procurement line that needs the original Siemens MPN — typically because the machine builder's documentation, the SINAMICS drive parameter set, or the customer's spares contract pins this exact order code — independent channel stock and surplus pulls are the practical route, with quantity and traceability confirmed per RFQ.
What replaces the 1FK7034-5AK71-1LG5 on a like-for-like retrofit?
Buyers holding a 1FK7034-5AK71-1LG5 BOM slot typically commit to original-code supply rather than parametric substitutes, because the encoder resolution, shaft, brake option, and connector variant on this 1FK7 order code are matched to a specific SINAMICS drive firmware branch and will not behave identically on a different servo SKU without a re-validation pass.