What sits on the shaft end
The 1FK7022-5AK71-1LB5 is a Siemens 1FK7 compact synchronous servo motor — a low-inertia brushless servomotor that drives the load end of a closed-loop position/speed axis through its integrated encoder feedback, sized into tight machine frames where the 1FK7 series earned its reputation.
Where the lifecycle flag changes the conversation
The ledger lists this order code at eol_hot — the part has crossed into a phase where Siemens is no longer accepting new orders against the standard production line, and remaining stock moves through the surplus and broker market rather than the factory. Quotations for an EOL/hot motor of this type run against the remaining lot pool — each RFQ pulls from independent stock, and the response either confirms a match to the encoded option list or flags a variant delta the buyer has to accept or reject on paper.
Swapping on the line at 2 a.m.
A maintenance swap on an existing 1FK7 axis is mechanical-and-connector work, not a commissioning exercise — the motor drops onto the same pilot, the same power and encoder cables land on the same connectors, and the drive side keeps its parameter set because the encoder resolution and winding code match the original commissioning record.