Reading the lifecycle flag before you spec the axis
The 1FK7033-4CK71-1BA0: For a value-engineering buyer that flag is the gate: pricing on an eol_hot servo converges on lot-specific surplus rather than a running factory price ladder, so a should-cost model built from a current-production equivalent will systematically over-state what this code is worth.
Sizing the mechanical side without a current datasheet
Because the record does not carry a published datasheet PDF on this listing, the only safe substitute for an integrator is the nameplate cross-check against an existing installed unit or the variant decoder on the Siemens legacy configurator — guessing the encoder, brake or shaft from the order code suffix is how 1FK7 retrofit jobs end up on the wrong feedback card.
How to actually source an eol_hot 1FK7 motor
Quoted-to-order against an RFQ is the realistic procurement lane: independent distributors pull from decommissioned machine spares, line-balancing inventory and broker consignments, and the price-per-unit moves with lot condition and encoder variant rather than with the Siemens catalogue. For a cost-down buyer evaluating a form-fit-function equivalent, the cross-check worth running is the current 1FK7 successor frame from Siemens — the rotor length, encoder family and brake option have to match or the SINAMICS drive commissioning will reject the motor ID — and the surplus-channel price on this code will normally beat a current-production substitute once the qualification cost is loaded in.