Definition: 1FK7 compact synchronous motor, SIMOTICS S-line class
The 1FK7022-5AK71-1UA3 is a 1FK7 compact synchronous motor from the Siemens servo line — a low-inertia brushless servo used in high-dynamic positioning axes such as feeders, indexing tables, and small-format packaging or converting machinery.
Lifecycle status: EOL hot, no official successor on record
The lifecycle record carries an EOL hot flag, meaning production is winding down or has closed and remaining demand is fed from factory stock and the independent channel — not a normal active run-rate line. No official L-tier successor is listed for this exact order code in the available record, so any move to a current-production platform is a redesign — the 1FK7 footprint, feedback device, and connector keying do not drop into a 1FK2 or 1FT7 socket without a mechanical and parameter review.
For an OEM running the 1FK7022-5AK71-1UA3 on a build schedule, the practical path is quoted-to-order through independent distribution — factory-direct is closed at this lifecycle stage, so lead time and lot size are confirmed against the RFQ, not pulled from a stock shelf. If a current-production alternative is acceptable, the buyer should expect a cross-reference exercise — the original manufacturer has not published a pin-compatible successor on this order code, so a substitution requires the integrator to qualify the new motor against the existing drive parameter set and resolver/encoder mapping.