{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1FK71055AC711KB8","brand":"Siemens","brandSlug":"siemens","productSlug":"1FK71055AC711KB8","canonicalUrl":"https://aoctrl.com/siemens/1FK71055AC711KB8","factsUrl":"https://aoctrl.com/api/mcp/products/1FK71055AC711KB8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 1FK71055AC711KB8 synchronous servo motor, 48 Nm, 7.75 kW, 2000 rpm, 3-phase AC, SIMOTICS S-class family.","salesMarkdown":"## Where this motor sits on the SIMOTICS line The 1FK71055AC711KB8 is a Siemens 3-phase synchronous servo in the high-inertia SIMOTICS S class, rated 48 Nm continuous torque and 7.75 kW mechanical output at a 2000 rpm nominal speed — a shaft rating that puts it squarely in the mid-frame machine-tool and packaging-axis range rather than light-feed axis duty. ## What the 48 Nm / 7.75 kW figure decides on the BOM 48 Nm at 2000 rpm gives the 7.75 kW shaft figure on the nameplate, so any drive pairing has to deliver that torque continuously across the speed envelope without tripping the SINAMICS torque-limit model — undersizing the S120 module here shows up as I2T shutdowns on the slow-axis moves, not as an alarm during commissioning. ## Sourcing posture for an eol_hot servo For an eol_hot servo like this one, the spread between original-pack and surplus-channel pricing is the part of the business that matters — clean traceable stock from a known industrial source is what keeps a margin on the line and avoids the encoder-data-sheet mismatch that bites when a motor arrives with a DOA resolver. Quoted to order against the RFQ: pricing and availability for the 1FK71055AC711KB8 are confirmed at quote time from independent industrial channels, with lead time and lot condition returned per request rather than carried as a posted number.","metaTitle":"Siemens 1FK71055AC711KB8 Servo Motor, 48 Nm, 7.75 kW","metaDescription":"Siemens 1FK71055AC711KB8 synchronous servo motor, 48 Nm, 7.75 kW, 2000 rpm. Lifecycle eol_hot; quoted to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Servo Motors"],"specifications":{"title":"1FK71055AC711KB8","description":"MOTOR SYNC 3AC 48NM 7.75KW 2000RPM|MOTOR SYNC 3AC 48NM 7.75KW 2000RPM","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9f6c85958f1fc8421964f81200cf7a55.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What does the 48 Nm / 7.75 kW / 2000 rpm nameplate data mean for drive pairing?","answer":"Those three numbers describe the continuous operating envelope: 48 Nm of torque at a 2000 rpm nominal speed producing 7.75 kW of shaft power. Any SINAMICS drive on the BOM has to be sized to deliver that torque continuously without entering the I2T shutdown band, which is a drive-module selection question rather than a motor-replacement question."},{"question":"Who supplies the 1FK71055AC711KB8 and how is it quoted for volume?","answer":"For an eol_hot Siemens servo motor, independent industrial distributors carry the stock, and pricing is returned per RFQ rather than published. Volume quotes depend on lot size and traceable condition, with lead time confirmed alongside the unit price at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/1FK71055AC711KB8","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/1FK71055AC711KB8 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-23T08:15:34.553Z","lastPublished":"2026-07-23T08:15:34.553Z","indexable":true}}