{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1FK7042-5AF71-1UH0","brand":"Siemens","brandSlug":"siemens","productSlug":"1FK7042-5AF71-1UH0","canonicalUrl":"https://aoctrl.com/siemens/1FK7042-5AF71-1UH0","factsUrl":"https://aoctrl.com/api/mcp/products/1FK7042-5AF71-1UH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 1FK7 series servo motor, 1FK7042-5AF71-1UH0, 4.99 kg, phase-out stock, sourced through independent distribution to order.","salesMarkdown":"## What it is and where it lands The 1FK7042-5AF71-1UH0 is a Siemens synchronous servo motor from the 1FK7 compact series, the kind of low-inertia drive that lives on a packaging-line indexing axis, a pick-and-place gantry, or a feeder bowl where a SINAMICS drive closes the position loop over the Profibus/Profinet cable. ## Reading the 1FK7042 frame The 1FK7042 frame sits in the middle of the 1FK7 range; ratings like rated speed, torque, and brake option are encoded in the suffix of the order code, so the -1UH0 dash position must be confirmed against the panel printout before the motor is lifted onto the coupling — not after. ## Lifecycle — why the orders are asking around The field reads eol_hot, meaning Siemens has moved this code into a phase-out window where new production is winding down — the practical effect on a spare-parts shelf is that fresh units only exist in allocated inventory until the factory runs dry, then the channel becomes surplus and broker lots. For an existing line running the -1UH0 suffix, the right move is to lock in a multi-unit spares quote while the manufacturer channel still ships and to start mapping which 1FK7042 suffix in the current catalog (or a clean SINAMICS-controlled 1FK7 successor) matches the encoder, brake, and shaft dimensions before the surplus thins out. ## Sourcing posture for a phase-out motor Repair-exchange is the other lever worth asking about on a 1FK7 — the encoder and bearings are field-serviceable on most frames, so a returned-unit exchange can stretch the spare-pool budget when new units are no longer being built.","metaTitle":"Siemens 1FK7042-5AF71-1UH0 Servo Motor, 4.99 kg","metaDescription":"Siemens 1FK7042-5AF71-1UH0 servo motor in the 1FK7042 frame, 4.99 kg, flagged phase-out — sourced through independent distribution, availability quoted on RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Servo Motors"],"specifications":{"title":"1FK7042-5AF71-1UH0","Part #":"1FK7042-5AF71-1UH0","Weight":"4.99 kgs","Category":"Motors","description":"1FK7042-5AF71-1UH0 - SERVO MOTOR by SIEMENS","Sub Category":"Servo Motors","Top Category":"Motors & Motor Controls","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5,300.85","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/647530720402e9bdb23d5fbad456dc20.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What's the closest functional second-source for the 1FK7042-5AF71-1UH0?","answer":"Within the 1FK7 family itself, the 1FK7042-5AF21-1UA0 is the closer-weight match at 4.54 kg and shares the same frame, but its -2 winding changes the torque/speed envelope and the SINAMICS parameter file must be re-validated before it can carry the load of a -7 winding motor. The 1FK7042-5AF71-1DB0 keeps the same -5AF71 stack but adds a brake at 5.44 kg, so it is only a drop-in on machines built for a brake on that axis."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/1FK7042-5AF71-1UH0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/1FK7042-5AF71-1UH0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-23T02:51:17.854Z","lastPublished":"2026-07-23T02:51:17.854Z","indexable":true}}