What this compact servo is on the shelf
The 1FK7042-5AK71-1DG3 is a 1FK7 Compact synchronous servo motor from Siemens — the compact line in the 1FK7 family, used on SIMOTION and SINAMICS drive packages where a low-inertia rotor and short overall length matter more than high continuous torque.
Lifecycle read — what eol_hot means for the BOM line
For a line that already runs this motor, that posture argues for buying ahead — pulling the critical spare into the cabinet while the channel is still hot, rather than scrambling when the next failure hits after the part has slipped to full discontinuation.
Sourcing posture for an eol_hot spare
Buyers searching for 1FK7042-5AK71-1DG3 for sale or buy 1FK7042-5AK71-1DG3 should anchor the request on the full order code so the variant dash digits (the -1DG3 suffix) are not transposed against another winding or encoder option in the same frame.