{"product_id":"kst-x20-7512-hv-brushless-digital-servo-82kgf-cm-0-11sec-for-giant-scale-3d-aircraft-jets","title":"KST X20-7512 HV Brushless Digital Servo 82Kgf.cm 0.11sec for Giant Scale 3D Aircraft \u0026 Jets","description":"\u003cp\u003eEngineered for giant-scale 3D aerobatic airframes, large turbine jets, and extreme industrial platforms, the \u003cstrong\u003eKST X20-7512\u003c\/strong\u003e high-voltage brushless digital servo delivers an immense \u003cstrong\u003e82.0 kgf.cm of stall torque\u003c\/strong\u003e and a rapid 0.11s\/60° transit speed at 8.4V. Driven by a high-efficiency \u003cstrong\u003e4-pole brushless DC motor\u003c\/strong\u003e, hardened steel geartrain with dual ball bearings, and a rigid CNC aluminum alloy casing, the X20-7512 satisfies the most demanding competition 3D pilots with unyielding holding authority, zero backlash, and rapid-fire centering response.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Torque 4-Pole Brushless DC Motor:\u003c\/strong\u003e Advanced 4-pole architecture produces immense electromagnetic torque density, instantaneous control response, and exceptional thermal efficiency under heavy cyclic loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColossal 82.0 kgf.cm Stall Torque:\u003c\/strong\u003e Delivers massive holding power to keep giant-scale elevators, ailerons, and rudders rigidly positioned through high-speed snaps, knife-edge passes, and aggressive harrier maneuvers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardened Steel Geartrain:\u003c\/strong\u003e Precision-machined steel gears supported by dual ball bearings minimize backlash and withstand extreme aerodynamic hinge flutter and landing shock loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 25T-6 Output Spline:\u003c\/strong\u003e Industry-standard 25-tooth (6mm) output spline ensures broad compatibility with aftermarket aluminum servo horns.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull CNC Aluminum Casing:\u003c\/strong\u003e Precision-machined alloy housing guarantees structural rigidity, tight geartrain alignment, and rapid thermal dissipation during extended flights.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Voltage Operation:\u003c\/strong\u003e Native 6.0V–8.4V operating range supports direct 2S LiPo receiver packs without dedicated voltage regulators.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgrammable \u0026amp; Soft Start:\u003c\/strong\u003e Configurable parameters and soft-start protection (compatible with KST Tool #3 and Tool #5) to prevent sudden power-up linkage stress.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e X20-7512 High-Torque Brushless Servo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Giant-Scale 3D Aerobatic Airplanes, Turbine Jets, Large Scale Models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Voltage:\u003c\/strong\u003e DC 7.4V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Range:\u003c\/strong\u003e DC 6.0V – 8.4V (2S LiPo Direct Drive)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Type:\u003c\/strong\u003e 4-Pole Brushless DC Motor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Set Material:\u003c\/strong\u003e Hardened Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Material:\u003c\/strong\u003e CNC Aluminum Alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearings:\u003c\/strong\u003e Dual Ball Bearings (2BB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Spline:\u003c\/strong\u003e 25T - 6mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition Sensor:\u003c\/strong\u003e High-Precision Potentiometer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Frequency:\u003c\/strong\u003e 1520μs \/ 333Hz (1000μs – 2000μs)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -10°C to +65°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft Start \/ Programmability:\u003c\/strong\u003e Yes (Programmable with KST Tool #3 \u0026amp; #5)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 40.5 × 20.0 × 38.0 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 70g (±10%)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePerformance Ratings\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStall Torque:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e65.0 kgf.cm @ 6.0V\u003c\/li\u003e\n\u003cli\u003e75.0 kgf.cm @ 7.4V\u003c\/li\u003e\n\u003cli\u003e82.0 kgf.cm @ 8.4V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Speed (No-Load):\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e0.14 sec\/60° @ 6.0V\u003c\/li\u003e\n\u003cli\u003e0.12 sec\/60° @ 7.4V\u003c\/li\u003e\n\u003cli\u003e0.11 sec\/60° @ 8.4V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStall Current:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e8.80A @ 6.0V\u003c\/li\u003e\n\u003cli\u003e10.80A @ 7.4V\u003c\/li\u003e\n\u003cli\u003e12.30A @ 8.4V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eWiring \u0026amp; Power Requirements\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e High-torque operation draws up to 12.3A at stall. Please ensure your receiver power supply or battery eliminator circuit (BEC) is adequately dimensioned.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtension Leads:\u003c\/strong\u003e For long servo lead runs, always use high-quality twisted servo wire with a minimum conductor cross-section of \u003cstrong\u003e0.5mm² (approx. 20 AWG)\u003c\/strong\u003e to prevent voltage drop.\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e*Always consult your model manufacturer's recommended servo specifications before installation.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eSize\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/X20-7512-02.png?v=1789642062\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/X20-7512-01.png?v=1789642062\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2 class=\"4ever-article\"\u003eDownload\u003cbr\u003e\n\u003c\/h2\u003e\n\u003carticle class=\"4ever-article\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/KST_0423_X20_7512.pdf?v=1789642094\" title=\"X20-7512 Technical Specification\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan\u003eX20-7512 Technical Specification\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/article\u003e","brand":"KST","offers":[{"title":"Default Title","offer_id":50447778808058,"sku":null,"price":128.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/KST00949.png?v=1789014812","url":"https:\/\/kstdigital.com\/products\/kst-x20-7512-hv-brushless-digital-servo-82kgf-cm-0-11sec-for-giant-scale-3d-aircraft-jets","provider":"KSTDigital","version":"1.0","type":"link"}