EOL-hot on the line — what that changes for a kitting decision
The 1FK70437AK711EH5: On the spindle side the nameplate is unambiguous: MOTOR SYNC 3AC 3.1NM 1.26KW 6000RPM — a three-phase AC synchronous servo rated 3.1 Nm continuous torque, 1.26 kW mechanical output, and 6000 rpm top speed. That envelope is the first thing a replacement check has to match, because a higher-torque motor in the same frame does not necessarily fit the same coupling or share the same drive parameter set.
Rating envelope and what it locks in
3.1 Nm at 1.26 kW across a 6000 rpm speed range places this in the compact mid-inertia segment of the Siemens synchronous-servo line — sized for machine-tool axes, packaging indexing, and small-format converting or pick-and-place drives where the load inertia is moderate and the cycle rate is high. Three-phase AC synchronous operation means the 1FK70437AK711EH5 is fed from a Siemens SINAMICS-class servo drive; the drive commissioning profile, motor ID, and resolver/encoder feedback map are matched at the controller side, so a swap that keeps the frame but changes the feedback device forces a re-parameterisation pass on the controller before the axis will run cleanly.
Sourcing posture for a phased-out servo
No stock-holding or immediacy claim is made here; the kit lead depends on what the surplus lot carries when the RFQ lands.