What the EOL signal means for your BOM
The Siemens 1FK7083-5AF7.-1... carries a of eol_hot, so this order code is being wound down by the manufacturer — the descriptor itself flags it as a spare part rather than a current-production position, which changes how a buyer should read the stocking question. Mechanically it is a SIMOTICS S 1FK7 Compact synchronous servo motor rated 16 Nm at 100K, 3000 rpm, 3.30 kW, naturally cooled, with the power/signal connector plug rotatable by 270° — the compact 1FK7 footprint that panel builders know from the SINAMICS S120 drive family, sized here for mid-range axis duties.
Sizing the motor against the axis
At 16 Nm continuous stall torque and 3.30 kW at 3000 rpm, this is a mid-power servo — the kind of rating that fits indexing tables, packaging cross-seams, and medium-inertia conveyors where 1FK7 Compact is the standard Siemens fit, not a high-inertia 1FK7 High Inertia or 1FT7 alternative. Naturally cooled (no integrated fan) means the 3.30 kW figure is the surface-cooled rating; if the cabinet envelope forces a reduced-airflow mounting, the thermal headroom shrinks and the real continuous torque sits below nameplate — a classic gotcha when a Compact spare replaces a fan-cooled unit. The rotatable power/signal connector simplifies retrofits in tight cabinets — the same connector orientation that ships from Siemens can be re-aimed on site without re-terminating, which matters when the spare is being dropped into an existing harness without rewiring the cabinet gland.
Buying posture for an EOL servo
For an eol_hot servo the procurement question is no longer price-per-unit but lot availability and traceability — the order code is sourced against the RFQ through independent channels, and the quoted quantity, condition, and lead time are confirmed only when the BOM position is opened with a real RFQ.