{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1FK7040-5AK71-1EB0","brand":"Siemens","brandSlug":"siemens","productSlug":"1FK7040-5AK71-1EB0","canonicalUrl":"https://aoctrl.com/siemens/1FK7040-5AK71-1EB0","factsUrl":"https://aoctrl.com/api/mcp/products/1FK7040-5AK71-1EB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 1FK7040-5AK71-1EB0 SIMOTICS S servo motor, SINAMICS S120 line, 4.08 kg, end-of-life, legacy replacement sourcing.","salesMarkdown":"## 4.08 kg servo motor in the SINAMICS S120 line, EOL The 1FK7040-5AK71-1EB0 is a Siemens SIMOTICS S servo motor sized for the SINAMICS S120 drive platform — a compact rotating-shaft motor that pairs with a SINAMICS S120 power module and the matched encoder / cable set for closed-loop positioning or speed control. ## Why eol_hot changes the spare-cabinet calculation An eol_hot servo motor is exactly the part that should already be sitting on a shelf in the maintenance cabinet if it backs a critical axis — once the last-time-buy window closes and no spare is held, a failed drive on a machine tool or packaging line can sit idle for weeks while a replacement is hunted broker-to-broker. Independent distribution is where these motors are now sourced from: new-surplus stock pulled out of factory-sealed trays, factory-pull units from decommissioned cells, and lot-traceable spares from integrators who held spares for in-house service contracts. There is no official pin-compatible successor carried on this part's record — when the motor turns, the BOM line either re-quotes against available stock or the machine axis needs a redesign around a current-production SIMOTICS S frame with a different shaft, connector, and encoder. ## What a buyer needs to pin down before specifying The 1FK7 frame numbering encodes the shaft height, magnet stack length, and brake / encoder options inside the order code suffix — a 1FK7040 is a defined mechanical envelope, and the trailing -1EB0 suffix locks in the winding, feedback, and connector variant; confirming the full string on the nameplate of the motor being replaced is the only way to guarantee the replacement drops onto the existing SINAMICS S120 drive commissioning without re-parameterising the drive. ## Sourcing posture for a discontinued Siemens servo Buyers who need a like-for-like replacement on a live machine today — rather than a forward-looking spare for next quarter — should spell out the SINAMICS S120 drive firmware version and the encoder type currently commissioned, so the quoted unit is guaranteed to plug into the existing drive configuration without a commissioning visit.","metaTitle":"Siemens 1FK7040-5AK71-1EB0 Servo Motor, 4.08 kg, EOL","metaDescription":"Siemens 1FK7040-5AK71-1EB0 SIMOTICS S servo motor in the SINAMICS S120 line, 4.08 kg, flagged end-of-life — sourced to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Servo Motors"],"specifications":{"title":"1FK7040-5AK71-1EB0","Part #":"1FK7040-5AK71-1EB0","Weight":"4.08 kgs","Category":"Motors","description":"1FK7040-5AK71-1EB0 - SINAMICS S120 by SIEMENS","Sub Category":"Servo Motors","Top Category":"Motors & Motor Controls","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3,696.70","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/647530720402e9bdb23d5fbad456dc20.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 1FK7040-5AK71-1EB0?","answer":"There is no official pin-compatible successor on this part's record — the 1FK7040 frame is a defined mechanical envelope and the -1EB0 suffix locks the winding, feedback, and connector variant, so a direct drop-in replacement would have to be a same-suffix unit sourced through surplus rather than a redesigned current-production alternative."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/1FK7040-5AK71-1EB0","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/1FK7040-5AK71-1EB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}