{"product_id":"sito-drive-hs-20-iv-reducer","title":"SITO DRIVE HS-20-IV Reducer, 30–120 Speed-Ratio Options for Robotics","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe \u003ca class=\"product-context-link\" href=\"https:\/\/rcdrone.top\/collections\/sito-drive\/\" style=\"font-weight:600;text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:0.15em;\"\u003eSITO DRIVE\u003c\/a\u003e HS-20-IV reducer is offered in 30, 50, 80, 100, and 120 speed-ratio options for the listed \u003ca class=\"product-context-link\" href=\"https:\/\/rcdrone.top\/collections\/robotics\/\" style=\"font-weight:600;text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:0.15em;\"\u003erobotics\u003c\/a\u003e scenarios, including humanoid robots, robotic arms, exoskeletons, quadruped robots, AGV vehicles, and ARU robots. Select the ratio against its corresponding torque and backlash values: rated torque at a 2000 r\/min input ranges from 15 to 40 Nm, while backlash varies by option.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFive selectable speed ratios: 30, 50, 80, 100, and 120.\u003c\/li\u003e\n\u003cli\u003eMaximum allowable input speed of 6500 rpm and allowable average speed of 3500 rpm for every listed ratio.\u003c\/li\u003e\n\u003cli\u003eBacklash of ≤20 arcsec for ratios 30 and 50, and ≤10 arcsec for ratios 80, 100, and 120.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eRatio 30\u003c\/th\u003e\n\u003cth\u003eRatio 50\u003c\/th\u003e\n\u003cth\u003eRatio 80\u003c\/th\u003e\n\u003cth\u003eRatio 100\u003c\/th\u003e\n\u003cth\u003eRatio 120\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eHS-20-IV\u003c\/td\u003e\n\u003ctd\u003eHS-20-IV\u003c\/td\u003e\n\u003ctd\u003eHS-20-IV\u003c\/td\u003e\n\u003ctd\u003eHS-20-IV\u003c\/td\u003e\n\u003ctd\u003eHS-20-IV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission ratio\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e80\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003ctd\u003e120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated torque at 2000 r\/min input\u003c\/td\u003e\n\u003ctd\u003e15 Nm\u003c\/td\u003e\n\u003ctd\u003e25 Nm\u003c\/td\u003e\n\u003ctd\u003e34 Nm\u003c\/td\u003e\n\u003ctd\u003e40 Nm\u003c\/td\u003e\n\u003ctd\u003e40 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak torque allowed during start\/stop\u003c\/td\u003e\n\u003ctd\u003e27 Nm\u003c\/td\u003e\n\u003ctd\u003e56 Nm\u003c\/td\u003e\n\u003ctd\u003e74 Nm\u003c\/td\u003e\n\u003ctd\u003e82 Nm\u003c\/td\u003e\n\u003ctd\u003e87 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum allowable average load torque\u003c\/td\u003e\n\u003ctd\u003e20 Nm\u003c\/td\u003e\n\u003ctd\u003e34 Nm\u003c\/td\u003e\n\u003ctd\u003e47 Nm\u003c\/td\u003e\n\u003ctd\u003e49 Nm\u003c\/td\u003e\n\u003ctd\u003e49 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstantaneous maximum torque\u003c\/td\u003e\n\u003ctd\u003e50 Nm\u003c\/td\u003e\n\u003ctd\u003e98 Nm\u003c\/td\u003e\n\u003ctd\u003e127 Nm\u003c\/td\u003e\n\u003ctd\u003e147 Nm\u003c\/td\u003e\n\u003ctd\u003e147 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum allowable input speed\u003c\/td\u003e\n\u003ctd\u003e6500 rpm\u003c\/td\u003e\n\u003ctd\u003e6500 rpm\u003c\/td\u003e\n\u003ctd\u003e6500 rpm\u003c\/td\u003e\n\u003ctd\u003e6500 rpm\u003c\/td\u003e\n\u003ctd\u003e6500 rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable average speed\u003c\/td\u003e\n\u003ctd\u003e3500 rpm\u003c\/td\u003e\n\u003ctd\u003e3500 rpm\u003c\/td\u003e\n\u003ctd\u003e3500 rpm\u003c\/td\u003e\n\u003ctd\u003e3500 rpm\u003c\/td\u003e\n\u003ctd\u003e3500 rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMoment of inertia\u003c\/td\u003e\n\u003ctd\u003e0.193 (×10⁻⁴ kg·m²)\u003c\/td\u003e\n\u003ctd\u003e0.193 (×10⁻⁴ kg·m²)\u003c\/td\u003e\n\u003ctd\u003e0.193 (×10⁻⁴ kg·m²)\u003c\/td\u003e\n\u003ctd\u003e0.193 (×10⁻⁴ kg·m²)\u003c\/td\u003e\n\u003ctd\u003e0.193 (×10⁻⁴ kg·m²)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBacklash\u003c\/td\u003e\n\u003ctd\u003e≤20 arcsec\u003c\/td\u003e\n\u003ctd\u003e≤20 arcsec\u003c\/td\u003e\n\u003ctd\u003e≤10 arcsec\u003c\/td\u003e\n\u003ctd\u003e≤10 arcsec\u003c\/td\u003e\n\u003ctd\u003e≤10 arcsec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumanoid robots:\u003c\/strong\u003e choose a listed ratio and its corresponding torque values for reduction requirements in humanoid robot mechanisms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobotic arms:\u003c\/strong\u003e use the ratio-specific torque and backlash figures when selecting a reducer for robotic-arm mechanisms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExoskeletons and quadruped robots:\u003c\/strong\u003e compare the available ratio options with the listed operating torque and speed limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAGV vehicles and ARU robots:\u003c\/strong\u003e select from the available ratios according to the required reduction and the applicable table values.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDownloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-20-iv-reducer-stp.step?v=1791421501\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eSITO HS 20 IV Reducer — 3D Model (STEP)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-20-iv-reducer-draw-product-installation-drawing.pdf?v=1791421508\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eSITO HS 20 IV Draw instalation drawing — Installation Drawing (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eVisual Details\u003c\/h2\u003e\u003ch3\u003eProduct Video\u003c\/h3\u003e\u003cfigure class=\"tophitek-product-video-block\"\u003e\u003cvideo autoplay=\"autoplay\" class=\"tophitek-product-video\" controls=\"controls\" loop=\"loop\" muted=\"\" playsinline=\"\" src=\"https:\/\/cdn.shopify.com\/videos\/c\/o\/v\/c67a5b35bde34559932cc03793471a77.mp4\" style=\"display:block;width:auto;max-width:100%;height:auto;margin:0 auto\"\u003eYour browser does not support the video tag.\u003c\/video\u003e\u003c\/figure\u003e\u003cfigure class=\"tophitek-product-video-block\"\u003e\u003cvideo autoplay=\"autoplay\" class=\"tophitek-product-video\" controls=\"controls\" loop=\"loop\" muted=\"\" playsinline=\"\" src=\"https:\/\/cdn.shopify.com\/videos\/c\/o\/v\/2092e1fd6fdc46e38630b7a7681b3fd5.mp4\" style=\"display:block;width:auto;max-width:100%;height:auto;margin:0 auto\"\u003eYour browser does not support the video tag.\u003c\/video\u003e\u003c\/figure\u003e\u003cfigure class=\"tophitek-product-video-block\"\u003e\u003cvideo autoplay=\"autoplay\" class=\"tophitek-product-video\" controls=\"controls\" loop=\"loop\" muted=\"\" playsinline=\"\" src=\"https:\/\/cdn.shopify.com\/videos\/c\/o\/v\/dcd0693fb83a4e1099c31879cefe2ce4.mp4\" style=\"display:block;width:auto;max-width:100%;height:auto;margin:0 auto\"\u003eYour browser does not support the video tag.\u003c\/video\u003e\u003c\/figure\u003e\n\u003ch3\u003eSpecifications and Performance\u003c\/h3\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg alt=\"Strain wave reducer range graphic with diameter, ratio, and torque ranges\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-20-iv-reducer-30-120-spe-7998494ae9.webp?v=1791421589\"\u003e\u003cfigcaption\u003ePromotional graphic of a strain wave reducer product range with diameter, ratio, and torque ranges\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003ch3\u003eAdditional Product Details\u003c\/h3\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg alt=\"Robotic hand graphic with a reducer labelled CS Mini-2.5\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-20-iv-reducer-30-120-spe-fe0eebfacb.webp?v=1791421593\"\u003e\u003cfigcaption\u003ePromotional graphic of a robotic hand above a miniature reducer labeled CS Mini-2.5\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg alt=\"Manufacturing collage with machining, assembly, and metal components\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-20-iv-reducer-30-120-spe-58561a2b28.webp?v=1791421608\"\u003e\u003cfigcaption\u003eManufacturing-process collage with machining, assembly, and finished metal components\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003ch3\u003eDimensions and Construction\u003c\/h3\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg alt=\"Compact reducer comparison graphic with U.S. dime and 11 mm label\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-20-iv-reducer-30-120-spe-581de50a70.webp?v=1791421597\"\u003e\u003cfigcaption\u003ePromotional comparison of compact strain wave reducers with a U.S. dime and an 11 mm diameter label\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003ch3\u003eApplication Examples\u003c\/h3\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg alt=\"Robotic arm and bionic robot reducer application illustration\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-20-iv-reducer-30-120-spe-29fcce3ea7.webp?v=1791421604\"\u003e\u003cfigcaption\u003eIllustration of robotic arm and robotic-hand mechanisms used with harmonic reducers\u003c\/figcaption\u003e\u003c\/figure\u003e","brand":"SITO DRIVE","offers":[{"title":"30","offer_id":67748099358944,"sku":"SIT-B0B585BB","price":394.32,"currency_code":"USD","in_stock":true},{"title":"50","offer_id":67748099391712,"sku":"SIT-FED4D073","price":405.84,"currency_code":"USD","in_stock":true},{"title":"80","offer_id":67748099424480,"sku":"SIT-4828F0ED","price":418.8,"currency_code":"USD","in_stock":true},{"title":"100","offer_id":67748099457248,"sku":"SIT-57389A4D","price":433.2,"currency_code":"USD","in_stock":true},{"title":"120","offer_id":67748099490016,"sku":"SIT-9BE85D5B","price":447.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/sito-drive-hs-20-iv-reducer-mounting-face-view-01.webp?v=1791421456","url":"https:\/\/rcdrone.top\/products\/sito-drive-hs-20-iv-reducer","provider":"RCDrone","version":"1.0","type":"link"}