{"product_id":"sito-drive-hs-25-iii-reducer","title":"SITO DRIVE HS-25-III Reducer, 30–120 Ratios for Robotic Systems","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-25-III reducer is offered in 30, 50, 80, 100, and 120 transmission-ratio options for robotic systems, including humanoid robots, robotic arms, exoskeletons, quadruped robots, AGV vehicles, and ARU robots. At a 2000 r\/min input speed, rated torque varies by selected ratio from 27 to 67 Nm. Select the ratio according to the required torque, allowable load torque, and backlash specification.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFive transmission-ratio options: 30, 50, 80, 100, and 120.\u003c\/li\u003e\n\u003cli\u003eMaximum allowable input speed of 5600 rpm for every ratio option.\u003c\/li\u003e\n\u003cli\u003eAllowable average speed of 3500 rpm for every ratio option.\u003c\/li\u003e\n\u003cli\u003eBacklash of ≤20 arcsec for ratios 30 and 50; ≤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-25-III\u003c\/td\u003e\n\u003ctd\u003eHS-25-III\u003c\/td\u003e\n\u003ctd\u003eHS-25-III\u003c\/td\u003e\n\u003ctd\u003eHS-25-III\u003c\/td\u003e\n\u003ctd\u003eHS-25-III\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\u003e27 Nm\u003c\/td\u003e\n\u003ctd\u003e39 Nm\u003c\/td\u003e\n\u003ctd\u003e63 Nm\u003c\/td\u003e\n\u003ctd\u003e67 Nm\u003c\/td\u003e\n\u003ctd\u003e67 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak torque allowed during start\/stop\u003c\/td\u003e\n\u003ctd\u003e50 Nm\u003c\/td\u003e\n\u003ctd\u003e98 Nm\u003c\/td\u003e\n\u003ctd\u003e137 Nm\u003c\/td\u003e\n\u003ctd\u003e157 Nm\u003c\/td\u003e\n\u003ctd\u003e167 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum allowable average load torque\u003c\/td\u003e\n\u003ctd\u003e38 Nm\u003c\/td\u003e\n\u003ctd\u003e55 Nm\u003c\/td\u003e\n\u003ctd\u003e87 Nm\u003c\/td\u003e\n\u003ctd\u003e108 Nm\u003c\/td\u003e\n\u003ctd\u003e108 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstantaneous maximum torque\u003c\/td\u003e\n\u003ctd\u003e95 Nm\u003c\/td\u003e\n\u003ctd\u003e186 Nm\u003c\/td\u003e\n\u003ctd\u003e255 Nm\u003c\/td\u003e\n\u003ctd\u003e284 Nm\u003c\/td\u003e\n\u003ctd\u003e304 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum allowable input speed\u003c\/td\u003e\n\u003ctd\u003e5600 rpm\u003c\/td\u003e\n\u003ctd\u003e5600 rpm\u003c\/td\u003e\n\u003ctd\u003e5600 rpm\u003c\/td\u003e\n\u003ctd\u003e5600 rpm\u003c\/td\u003e\n\u003ctd\u003e5600 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\u003e0.413 (×10⁻⁴ kg·m²)\u003c\/td\u003e\n\u003ctd\u003e0.413 (×10⁻⁴ kg·m²)\u003c\/td\u003e\n\u003ctd\u003e0.413 (×10⁻⁴ kg·m²)\u003c\/td\u003e\n\u003ctd\u003e0.413 (×10⁻⁴ kg·m²)\u003c\/td\u003e\n\u003ctd\u003e0.413 (×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 and exoskeletons:\u003c\/strong\u003e select a ratio with the appropriate rated and allowable load torque for the joint or \u003ca class=\"product-context-link\" href=\"https:\/\/rcdrone.top\/collections\/servo-actuators\/\" style=\"font-weight:600;text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:0.15em;\"\u003eactuator\u003c\/a\u003e requirement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobotic arms:\u003c\/strong\u003e use the ratio-specific backlash value when positioning precision is a selection consideration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuadruped robots, AGV vehicles, and ARU robots:\u003c\/strong\u003e select from the available ratio options based on the system's required reduction ratio and torque limits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDownloads\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-iii-reducer-stp.step?v=1791422244\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eSITO HS 25 III Reducer — 3D Model (STEP)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-iii-reducer-draw-product-installation-drawing.pdf?v=1791422256\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eSITO HS 25 III Draw instalation drawing — Installation Drawing (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\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\"\u003e\n    Your browser does not support the video tag.\n  \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\"\u003e\n    Your browser does not support the video tag.\n  \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\"\u003e\n    Your browser does not support the video tag.\n  \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=\"SITO reducer family graphic with reduction-ratio options\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-iii-reducer-30-120-ra-7ce2499d28.webp?v=1791422340\"\u003e\u003cfigcaption\u003eThe reduction-ratio selection includes 30. The reduction-ratio selection includes 50.\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=\"Illustrative robotic-hand graphic labelled CSMini-2.5\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-iii-reducer-30-120-ra-867214f244.webp?v=1791422345\"\u003e\u003cfigcaption\u003ePromotional robotic-hand graphic labelled CSMini-2.5 reducer\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg alt=\"Reducer manufacturing and inspection collage\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-iii-reducer-30-120-ra-a8944f45c3.webp?v=1791422359\"\u003e\u003cfigcaption\u003eManufacturing and inspection collage with industry-standards claim\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=\"Miniature reducer illustration beside a U.S. quarter with 11 mm callout\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-iii-reducer-30-120-ra-400c11b117.webp?v=1791422350\"\u003e\u003cfigcaption\u003eSmall strain-wave reducers beside a U.S. quarter, with 11 mm diameter callout\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003ch3\u003eApplication Examples\u003c\/h3\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg alt=\"Generic industrial robotic arm application illustration\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-iii-reducer-30-120-ra-eac0fb97ed.webp?v=1791422354\"\u003e\u003cfigcaption\u003eIndustrial robotic arm illustration for harmonic reducer applications\u003c\/figcaption\u003e\u003c\/figure\u003e","brand":"SITO DRIVE","offers":[{"title":"30","offer_id":67748085563616,"sku":"SIT-4B724515","price":408.24,"currency_code":"USD","in_stock":true},{"title":"50","offer_id":67748085596384,"sku":"SIT-D5747700","price":421.2,"currency_code":"USD","in_stock":true},{"title":"80","offer_id":67748085629152,"sku":"SIT-B89E2F56","price":435.6,"currency_code":"USD","in_stock":true},{"title":"100","offer_id":67748085661920,"sku":"SIT-1380C92B","price":450.0,"currency_code":"USD","in_stock":true},{"title":"120","offer_id":67748085694688,"sku":"SIT-DD19FBCC","price":457.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/sito-drive-hs-25-iii-reducer-front-keyed-bore-01.webp?v=1791422191","url":"https:\/\/rcdrone.top\/products\/sito-drive-hs-25-iii-reducer","provider":"RCDrone","version":"1.0","type":"link"}