{"product_id":"sito-drive-hs-25-ii-reducer","title":"SITO DRIVE HS-25-II Reducer, 30–120 Ratios for Robotic Motion 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-II reducer is available in 30, 50, 80, 100, and 120 speed-ratio options for robotic motion-system applications. At a 2,000 r\/min input, rated torque ranges from 27 to 67 Nm by ratio, while allowable average input speed is 3,500 rpm and maximum allowable input speed is 5,600 rpm. Select the ratio according to the required torque and backlash specification.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFive selectable transmission ratios: 30, 50, 80, 100, and 120.\u003c\/li\u003e\n\u003cli\u003eRated torque at 2,000 r\/min input ranges from 27 Nm to 67 Nm, depending on ratio.\u003c\/li\u003e\n\u003cli\u003eBacklash is ≤20 arcsec for 30 and 50 ratios, and ≤10 arcsec for 80, 100, and 120 ratios.\u003c\/li\u003e\n\u003cli\u003eMaximum allowable input speed is 5,600 rpm and allowable average speed is 3,500 rpm for all listed ratios.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Videos\u003c\/h2\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-II\u003c\/td\u003e\n\u003ctd\u003eHS-25-II\u003c\/td\u003e\n\u003ctd\u003eHS-25-II\u003c\/td\u003e\n\u003ctd\u003eHS-25-II\u003c\/td\u003e\n\u003ctd\u003eHS-25-II\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 2,000 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\u003e5,600 rpm\u003c\/td\u003e\n\u003ctd\u003e5,600 rpm\u003c\/td\u003e\n\u003ctd\u003e5,600 rpm\u003c\/td\u003e\n\u003ctd\u003e5,600 rpm\u003c\/td\u003e\n\u003ctd\u003e5,600 rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable average speed\u003c\/td\u003e\n\u003ctd\u003e3,500 rpm\u003c\/td\u003e\n\u003ctd\u003e3,500 rpm\u003c\/td\u003e\n\u003ctd\u003e3,500 rpm\u003c\/td\u003e\n\u003ctd\u003e3,500 rpm\u003c\/td\u003e\n\u003ctd\u003e3,500 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\u003cp\u003eSupported application scenarios include humanoid robots, robotic arms, exoskeletons, quadruped robots, AGV vehicles, and ARU robots. The selectable transmission ratios and corresponding torque values help match the HS-25-II to the motion requirements of the selected application.\u003c\/p\u003e\n\u003ch2\u003eDownloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-ii-reducer-stp.step?v=1791421998\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eSITO HS 25 II Reducer — 3D Model (STEP)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-ii-reducer-draw-product-installation-drawing.pdf?v=1791422005\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eSITO HS 25 II 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\"\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\u003eAdditional Product Details\u003c\/h3\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg alt=\"Promotional graphic of the SITO reducer family\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-ii-reducer-30-120-rat-e78747e044.webp?v=1791422095\"\u003e\u003cfigcaption\u003ePromotional graphic of a range of strain wave drive reducers with stated diameter, ratio, and torque ranges\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg alt=\"Promotional graphic of miniature reducers beside a coin\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-ii-reducer-30-120-rat-559df02956.webp?v=1791422103\"\u003e\u003cfigcaption\u003ePromotional comparison graphic showing small strain wave drive reducers beside a U.S. quarter, with an 11 mm diameter claim\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg alt=\"Promotional manufacturing graphic with reducer components\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-ii-reducer-30-120-rat-2a10f21196.webp?v=1791422111\"\u003e\u003cfigcaption\u003eManufacturing quality promotional graphic showing reducer assembly, machining, and multiple finished components\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003ch3\u003eApplication Examples\u003c\/h3\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg alt=\"Promotional graphic featuring a small reducer in a robotic hand application\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-ii-reducer-30-120-rat-3aeac6a397.webp?v=1791422099\"\u003e\u003cfigcaption\u003ePromotional graphic for CS Mini-2.5 ultra-micro strain wave drive reducer in a robotic hand application\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg alt=\"Promotional graphic of an industrial robotic arm\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-hs-25-ii-reducer-30-120-rat-1d2f713d7c.webp?v=1791422107\"\u003e\u003cfigcaption\u003eIndustrial robotic arm graphic describing harmonic reducers as core robotic components\u003c\/figcaption\u003e\u003c\/figure\u003e","brand":"SITO DRIVE","offers":[{"title":"30","offer_id":67748091527392,"sku":"SIT-AD5F8A3A","price":413.04,"currency_code":"USD","in_stock":true},{"title":"50","offer_id":67748091560160,"sku":"SIT-FB039471","price":426.0,"currency_code":"USD","in_stock":true},{"title":"80","offer_id":67748091592928,"sku":"SIT-D720418B","price":440.4,"currency_code":"USD","in_stock":true},{"title":"100","offer_id":67748091625696,"sku":"SIT-BDEA100D","price":454.8,"currency_code":"USD","in_stock":true},{"title":"120","offer_id":67748091658464,"sku":"SIT-1BA639DE","price":462.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/sito-drive-hs-25-ii-reducer-front-m-23ced96c3a-01.webp?v=1791421952","url":"https:\/\/rcdrone.top\/products\/sito-drive-hs-25-ii-reducer","provider":"RCDrone","version":"1.0","type":"link"}