1FK7 compact synchronous servo motor at end-of-life hot
The 1FK7042-5AK71-1FB0: Within the Siemens synchronous servo line, the 1FK7 compact family slots into high-dynamic positioning and feed axes where a short footprint and low rotor inertia matter more than the continuous-torque envelope of the larger 1FK7 high-inertia or 1PH8 siblings.
What end-of-life hot means for the install window
For a capex line that has to hit the commissioning window, the practical move is to lock the quantity at RFQ now: identical replacements later tend to surface as repair-exchange pulls or lot-traceable surplus, not as repeat factory shipments.