{"product_id":"siemens-1fk7081-2af71-1qa0-servo-motor","title":"Siemens 1FK7081-2AF71-1QA0 SIMOTICS S 1FK7-CT 2.7 kW 12 Nm 3000 rpm Servo Motor","description":"\u003cp\u003eThe Siemens 1FK7081-2AF71-1QA0 is a SIMOTICS S 1FK7-CT synchronous servo motor rated 2.7 kW with 12 Nm standstill torque at 100K and a 3,000 rpm rated speed. It runs on a 600 V DC link, uses natural cooling, and carries an IP64 enclosure with an absolute 20-bit single-turn DRIVE-CLiQ encoder (AS20DQI). This variant ships without a holding brake.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e1FK7081-2AF71-1QA0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eSIMOTICS S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct designation\u003c\/td\u003e\n\u003ctd\u003e1FK7-CT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated power (PN)\u003c\/td\u003e\n\u003ctd\u003e2.7 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC link voltage (UDC)\u003c\/td\u003e\n\u003ctd\u003e600 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandstill torque (M0) at 100K\u003c\/td\u003e\n\u003ctd\u003e12 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated speed (NN)\u003c\/td\u003e\n\u003ctd\u003e3,000 rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of poles\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated current\u003c\/td\u003e\n\u003ctd\u003e6.8 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMoment of inertia\u003c\/td\u003e\n\u003ctd\u003e20.000 kgcm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003e93.0 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTorque constant\u003c\/td\u003e\n\u003ctd\u003e1.38 Nm\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage constant at 20°C\u003c\/td\u003e\n\u003ctd\u003e88.5 V\/1000 min⁻¹\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWinding resistance at 20°C\u003c\/td\u003e\n\u003ctd\u003e0.42 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRotating field inductance\u003c\/td\u003e\n\u003ctd\u003e7.7 mH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical time constant\u003c\/td\u003e\n\u003ctd\u003e18.20 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical time constant\u003c\/td\u003e\n\u003ctd\u003e1.35 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal time constant\u003c\/td\u003e\n\u003ctd\u003e45 min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShaft torsional stiffness\u003c\/td\u003e\n\u003ctd\u003e109,000 Nm\/rad\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight\u003c\/td\u003e\n\u003ctd\u003e12.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShaft height\u003c\/td\u003e\n\u003ctd\u003e80 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eNatural cooling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDegree of protection\u003c\/td\u003e\n\u003ctd\u003eIP64\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing color\u003c\/td\u003e\n\u003ctd\u003eAnthracite (RAL 7016)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEncoder\u003c\/td\u003e\n\u003ctd\u003eAbsolute single-turn, 20-bit, DRIVE-CLiQ interface (AS20DQI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHolding brake\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShaft\u003c\/td\u003e\n\u003ctd\u003eFeather key, tolerance N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower connector\u003c\/td\u003e\n\u003ctd\u003e1, rotatable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eIMB5 (IM V1, IM V3), flange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eSelection Notes\u003c\/h2\u003e\u003cp\u003eWithout a holding brake, this 1FK7-CT variant fits horizontal axes where an external mechanical stop or the drive's controlled ramp-down covers the standstill condition. The 20.000 kgcm² rotor inertia and 1.35 ms mechanical time constant favor point-to-point moves that need fast direction reversals over high top speed. At 3,000 rpm rated speed the 12 Nm standstill torque holds up to roughly 3.8 kW at rated point, so size the drive's current limit around the 6.8 A rated current rather than the motor frame alone.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eTypical use: pick-and-place and indexing axes on packaging and assembly lines, and any SINAMICS S120\/S210 DRIVE-CLiQ axis where a compact 80 mm flange servo motor with 12 Nm standstill torque matches the load.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":53960348303643,"sku":"1FK7081-2AF71-1QA0","price":1830.17,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/7722\/4475\/files\/siemens-1fk7081-2af71-1qa0-1fk7-ct-servo-motor.png?v=1789757848","url":"https:\/\/stoklink.com\/products\/siemens-1fk7081-2af71-1qa0-servo-motor","provider":"Stoklink","version":"1.0","type":"link"}