{"product_id":"cubemars-ri80-v2-0-kv75-motor","title":"CubeMars RI80 V2.0 KV75 Motor","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe RI80 V2.0 KV75 frameless torque motor is an inner-rotor, frameless motor from CubeMars’ RI series. Through advanced electromagnetic optimization, it achieves a high slot fill ratio and delivers exceptional power density. With no housing or end caps—retaining only the essential stator and rotor components—it reduces volume by over 30% compared to conventional framed motors of equivalent power. This makes it ideal for embedded installation in space-constrained applications such as robotic arm joints and precision rotary platforms.\u003c\/p\u003e\n\u003cp\u003eThe rotor can be directly and rigidly coupled to the load (e.g., shafts or turntables), eliminating intermediate transmission elements like gears or belts. This direct-drive architecture avoids mechanical losses and precision degradation, achieving power transmission efficiency exceeding 95%, while also minimizing component wear and maintenance requirements.\u003c\/p\u003e\n\u003cp\u003eThe stator features a modular design, allowing customization of mounting dimensions and fixation methods based on specific application needs. The rotor is compatible with various load shaft diameters—no additional adapters required—enabling rapid integration into diverse drivetrain systems.\u003c\/p\u003e\n\u003cp\u003eAdditionally, the rotor height has been increased by 2 mm to facilitate precise alignment with optional Hall sensors, ensuring accurate magnetic sensing and enabling high-fidelity motion control.\u003c\/p\u003e\n\u003ch2\u003eCore Specifications\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMotor Dimensions:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eΦ85 × 27 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHollow Shaft Diameter:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e40.5 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMotor Weight:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e411 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePeak Torque:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e4.1 Nm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNo-load Speed:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e2960 rpm\u003cspan\u003e@48V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Torque Density \u0026amp; Frameless Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe frameless architecture offers maximum flexibility for structural integration, empowering users to tailor mounting solutions to their exact mechanical layout\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUltra-Low Cogging Torque:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOptimized electromagnetic structure ensures exceptional smoothness and stability even at very low speeds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompact Form Factor for Easy Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDesigned for seamless embedding into robotic joints, rotating axes, and other tight-space mechanisms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Customizability:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eThe frameless configuration allows users to freely design support flanges, drive interfaces, encoder mounts, and other mechanical features according to their system requirements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackaging Contents\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eRI80 V2.0 KV75 Frameless Motor ×1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCertificate of Conformance ×1\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0696\/3832\/4277\/files\/CubeMars_RI80_V2.0_KV75_Motor-sub-001.jpg?v=1784262241\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0696\/3832\/4277\/files\/CubeMars_RI80_V2.0_KV75_Motor-sub-002.jpg?v=1784262240\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0696\/3832\/4277\/files\/CubeMars_RI80_V2.0_KV75_Motor-sub-003.jpg?v=1784262240\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0696\/3832\/4277\/files\/CubeMars_RI80_V2.0_KV75_Motor-sub-004.jpg?v=1784262240\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0696\/3832\/4277\/files\/CubeMars_RI80_V2.0_KV75_Motor-sub-005.jpg?v=1784262240\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0696\/3832\/4277\/files\/CubeMars_RI80_V2.0_KV75_Motor-sub-006.jpg?v=1784262240\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0696\/3832\/4277\/files\/CubeMars_RI80_V2.0_KV75_Motor-sub-007.jpg?v=1784262240\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0696\/3832\/4277\/files\/CubeMars_RI80_V2.0_KV75_Motor-sub-008.png?v=1784262240\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0696\/3832\/4277\/files\/CubeMars_RI80_V2.0_KV75_Motor-sub-009.png?v=1784262240\"\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta content=\"width=device-width, initial-scale=1.0\" name=\"viewport\"\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n        :root {\n            --tech-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);\n            --border-color: #d1d9e6;\n            --row-alt: #f8faff;\n            --section-divider-color: #e2eaf4;\n        }\n\n        body {\n            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;\n            background-color: #f0f4f8;\n            padding: 20px;\n            margin: 0;\n            color: #333;\n        }\n\n        .table-container {\n            max-width: 1200px;\n            margin: 0 auto;\n            background: #fff;\n            border-radius: 8px;\n            box-shadow: 0 4px 15px rgba(0,0,0,0.1);\n            overflow: hidden;\n        }\n\n        .main-header {\n            background: var(--tech-gradient);\n            color: white;\n            padding: 15px;\n            text-align: center;\n            font-size: 1.25rem;\n            font-weight: bold;\n            text-transform: uppercase;\n            letter-spacing: 1px;\n            border-bottom: 2px solid #fff;\n        }\n\n        table {\n            width: 100%;\n            border-collapse: collapse;\n            background: white;\n            table-layout: fixed;\n        }\n\n        th, td {\n            padding: 11px 10px; \/* 紧凑布局适配高密度数据 *\/\n            border: 1px solid var(--border-color);\n            text-align: center; \/* 严格要求所有列全部居中 *\/\n            word-wrap: break-word;\n            font-size: 0.85rem;\n            line-height: 1.4;\n        }\n\n        .params-header {\n            background-color: #004085 !important;\n            color: white !important;\n            text-align: center;\n            font-weight: bold !important;\n            text-transform: uppercase;\n        }\n\n        .section-divider {\n            background-color: var(--section-divider-color) !important;\n            height: 15px;\n            padding: 0;\n            border-left: none;\n            border-right: none;\n        }\n\n        .table-th {\n            background-color: #1d6fa5;\n            color: white;\n            font-weight: bold;\n        }\n\n        tr:nth-child(even) {\n            background-color: var(--row-alt);\n        }\n\n        \/* 4列宽度黄金比例分配 *\/\n        .col-p1 { width: 23%; font-weight: bold; }\n        .col-v1 { width: 27%; font-weight: 500; }\n        .col-p2 { width: 23%; font-weight: bold; }\n        .col-v2 { width: 27%; font-weight: 500; }\n\n        .content-footer {\n            max-width: 1200px;\n            margin: 0 auto;\n            padding: 20px 5px;\n        }\n\n        \/* 移动端完美适配媒体查询 *\/\n        @media screen and (max-width: 992px) {\n            body { padding: 10px; }\n            table, tbody, tr, td {\n                display: block;\n                width: 100% !important;\n                box-sizing: border-box;\n            }\n            tr {\n                border-bottom: 2px solid var(--border-color);\n                padding: 5px 0;\n            }\n            tr:nth-child(even) { background-color: transparent; }\n            td {\n                text-align: center;\n                border: none;\n                padding: 8px 10px;\n                font-size: 0.8rem;\n            }\n            \/* 移动端下将原本并排的Parameter标注出来或加深显示 *\/\n            td:nth-child(odd) {\n                font-weight: bold;\n                background-color: var(--row-alt);\n                padding-top: 12px;\n            }\n            td:nth-child(even) {\n                padding-bottom: 12px;\n                border-bottom: 1px dashed #e2e8f0;\n            }\n            .table-th { display: none; } \/* 移动端隐藏横向表头 *\/\n            .params-header {\n                display: block !important;\n                background-color: #004085 !important;\n                padding: 12px !important;\n            }\n            .section-divider {\n                display: block !important;\n                height: 10px !important;\n                background-color: var(--section-divider-color) !important;\n                border: none !important;\n            }\n        }\n    \u003c\/style\u003e\n\u003cdiv class=\"table-container\"\u003e\n\u003cdiv class=\"main-header\"\u003eCubeMars RI80 V2.0 KV75 Specifications\u003c\/div\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\" class=\"params-header\"\u003ePRODUCT PARAMETERS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"table-th col-p1\"\u003eParameter\u003c\/td\u003e\n\u003ctd class=\"table-th col-v1\"\u003eValue\u003c\/td\u003e\n\u003ctd class=\"table-th col-p2\"\u003eParameter\u003c\/td\u003e\n\u003ctd class=\"table-th col-v2\"\u003eValue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c!-- SECTION 1: Basic Specifications --\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eCobot Arm\/Exoskeleton\u003c\/td\u003e\n\u003ctd\u003eInsulation Class\u003c\/td\u003e\n\u003ctd\u003eC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriving Way\u003c\/td\u003e\n\u003ctd\u003eFOC\u003c\/td\u003e\n\u003ctd\u003eInsulation High-Voltage\u003c\/td\u003e\n\u003ctd\u003e1000V 5mA\/2s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperation Ambient Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C~50°C\u003c\/td\u003e\n\u003ctd\u003eInsulation Resistance\u003c\/td\u003e\n\u003ctd\u003e1000V 10MΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWinding Type\u003c\/td\u003e\n\u003ctd\u003eDelta\u003c\/td\u003e\n\u003ctd\u003ePhase\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePole Pairs\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c!-- Divider between specifications sections --\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\" class=\"section-divider\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c!-- SECTION 2: Electric Parameters --\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage(V)\u003c\/td\u003e\n\u003ctd\u003e24\/36\/48\u003c\/td\u003e\n\u003ctd\u003eKe(V\/krpm)\u003c\/td\u003e\n\u003ctd\u003e15.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo-Load Speed(rpm)\u003c\/td\u003e\n\u003ctd\u003e1480\/2220\/2960\u003c\/td\u003e\n\u003ctd\u003ePhase To Phase Resistance(mΩ)\u003c\/td\u003e\n\u003ctd\u003e330\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Torque(Nm)\u003c\/td\u003e\n\u003ctd\u003e1.45\u003c\/td\u003e\n\u003ctd\u003ePhase To Phase Inductace(μH)\u003c\/td\u003e\n\u003ctd\u003e510\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Speed(rpm)\u003c\/td\u003e\n\u003ctd\u003e1135\/1785\/2430\u003c\/td\u003e\n\u003ctd\u003eInertia(gcm²)\u003c\/td\u003e\n\u003ctd\u003e212.49\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Current(ADC)\u003c\/td\u003e\n\u003ctd\u003e9.4\u003c\/td\u003e\n\u003ctd\u003eKm(Nm\/√W)\u003c\/td\u003e\n\u003ctd\u003e0.2698\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Torque(Nm)\u003c\/td\u003e\n\u003ctd\u003e4.1\u003c\/td\u003e\n\u003ctd\u003eMechanical Time Constant(ms)\u003c\/td\u003e\n\u003ctd\u003e0.29\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Current(ADC)\u003c\/td\u003e\n\u003ctd\u003e27.6\u003c\/td\u003e\n\u003ctd\u003eElectrical Time Constant(ms)\u003c\/td\u003e\n\u003ctd\u003e1.55\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKv(rpm\/V)\u003c\/td\u003e\n\u003ctd\u003e75\u003c\/td\u003e\n\u003ctd\u003eWeight(g)\u003c\/td\u003e\n\u003ctd\u003e411\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKt(Nm\/A)\u003c\/td\u003e\n\u003ctd\u003e0.155\u003c\/td\u003e\n\u003ctd\u003eMaximum Torque Weight Ratio(Nm\/Kg)\u003c\/td\u003e\n\u003ctd\u003e9.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c!-- Divider between electric and wiring sections --\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\" class=\"section-divider\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c!-- SECTION 3: Wiring \u0026 Connection Info --\u003e\n\u003ctr\u003e\n\u003ctd\u003eU\u003c\/td\u003e\n\u003ctd\u003eRed+16#Silicone Wire\u003c\/td\u003e\n\u003ctd\u003eHv\u003c\/td\u003e\n\u003ctd\u003eBlue+30#Silicone Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eV\u003c\/td\u003e\n\u003ctd\u003eYellow+16#Silicone Wire\u003c\/td\u003e\n\u003ctd\u003eHw\u003c\/td\u003e\n\u003ctd\u003eGreen+30#Silicone Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eW\u003c\/td\u003e\n\u003ctd\u003eBlue+16#Silicone Wire\u003c\/td\u003e\n\u003ctd\u003eVCC GND\u003c\/td\u003e\n\u003ctd\u003eRed+30#Silicone Wire\u003cbr\u003eBlack+30#Silicone Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHu\u003c\/td\u003e\n\u003ctd\u003eYellow+30#Silicone Wire\u003c\/td\u003e\n\u003ctd\u003eCorrespondence\u003c\/td\u003e\n\u003ctd\u003eHu-U Hv-V Hw-W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"content-footer\"\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0696\/3832\/4277\/files\/RI80.STEP?v=1784262507\" title=\"RI80.STEP\"\u003eRI80.STEP\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0696\/3832\/4277\/files\/RI80II-with-hall-sensor.STEP?v=1784262507\" title=\"RI80II-with-hall-sensor.STEP\"\u003eRI80II-with-hall-sensor.STEP\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"CubeMars","offers":[{"title":"RI80 V2.0 KV75 (without hall sensor)","offer_id":45781428830261,"sku":null,"price":132.9,"currency_code":"USD","in_stock":true},{"title":"RI80 V2.0 KV75 (with hall sensor)","offer_id":45781428863029,"sku":null,"price":147.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3832\/4277\/files\/CubeMarsRI80V2.0KV75Motor-main-001.jpg?v=1784785912","url":"https:\/\/www.zennixtek.com\/products\/cubemars-ri80-v2-0-kv75-motor","provider":"ZennixTek","version":"1.0","type":"link"}