{"product_id":"sito-drive-cd-20-reducer","title":"SITO DRIVE CD-20 Reducer, 30–120 Transmission Ratios 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 CD-20 reducer is offered in transmission ratios of 30, 50, 80, 100, and 120 for listed robotic applications, including humanoid robots, robotic arms, exoskeletons, quadruped robots, AGV vehicles, and ARU robots. Ratio selection changes rated torque, allowable torque limits, and backlash; compare the table values under the stated input-speed conditions.\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\u003eMaximum allowable input speed of 6500 rpm for every listed ratio.\u003c\/li\u003e\n\u003cli\u003eAllowable average speed of 3500 rpm for every listed ratio.\u003c\/li\u003e\n\u003cli\u003eMoment of inertia of 0.09 × 10⁻⁴ kg·m² for every listed ratio.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eThe CD-20 is listed for robotic motion applications where the selected transmission ratio and corresponding torque limits can be assessed for the design requirement:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHumanoid robots\u003c\/li\u003e\n\u003cli\u003eRobotic arms\u003c\/li\u003e\n\u003cli\u003eExoskeletons\u003c\/li\u003e\n\u003cli\u003eQuadruped robots\u003c\/li\u003e\n\u003cli\u003eAGV vehicles\u003c\/li\u003e\n\u003cli\u003eARU robots\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\u003eCD-20\u003c\/td\u003e\n\u003ctd\u003eCD-20\u003c\/td\u003e\n\u003ctd\u003eCD-20\u003c\/td\u003e\n\u003ctd\u003eCD-20\u003c\/td\u003e\n\u003ctd\u003eCD-20\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\u003e10.2 Nm\u003c\/td\u003e\n\u003ctd\u003e17 Nm\u003c\/td\u003e\n\u003ctd\u003e24 Nm\u003c\/td\u003e\n\u003ctd\u003e28 Nm\u003c\/td\u003e\n\u003ctd\u003e28 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak torque allowed during start\/stop\u003c\/td\u003e\n\u003ctd\u003e23.4 Nm\u003c\/td\u003e\n\u003ctd\u003e39 Nm\u003c\/td\u003e\n\u003ctd\u003e51 Nm\u003c\/td\u003e\n\u003ctd\u003e57 Nm\u003c\/td\u003e\n\u003ctd\u003e61 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum allowable average load torque\u003c\/td\u003e\n\u003ctd\u003e14.4 Nm\u003c\/td\u003e\n\u003ctd\u003e24 Nm\u003c\/td\u003e\n\u003ctd\u003e33 Nm\u003c\/td\u003e\n\u003ctd\u003e34 Nm\u003c\/td\u003e\n\u003ctd\u003e34 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstantaneous maximum torque\u003c\/td\u003e\n\u003ctd\u003e41.4 Nm\u003c\/td\u003e\n\u003ctd\u003e69 Nm\u003c\/td\u003e\n\u003ctd\u003e76 Nm\u003c\/td\u003e\n\u003ctd\u003e76 Nm\u003c\/td\u003e\n\u003ctd\u003e95 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\u003e0.09 × 10⁻⁴ kg·m²\u003c\/td\u003e\n\u003ctd\u003e0.09 × 10⁻⁴ kg·m²\u003c\/td\u003e\n\u003ctd\u003e0.09 × 10⁻⁴ kg·m²\u003c\/td\u003e\n\u003ctd\u003e0.09 × 10⁻⁴ kg·m²\u003c\/td\u003e\n\u003ctd\u003e0.09 × 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\u003eDownloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0673\/6848\/5000\/files\/SITO-CD-20-Reducer.step?v=1764499525\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eSITO CD 20 Reducer — 3D Model (STEP)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0673\/6848\/5000\/files\/SITO-CD-20-Draw.pdf?v=1764499523\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eSITO CD 20 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=\"SITO CD series reducer range graphic\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-cd-20-reducer-30-120-transm-0e96cd6217.webp?v=1791383800\"\u003e\u003cfigcaption\u003eStrain wave drive reducer family with stated 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 labelled CS Mini-2.5\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0673\/6848\/5000\/files\/SITO-CD-Series-des-_2.jpg?v=1764496936\"\u003e\u003cfigcaption\u003eRobotic hand graphic labeled CS Mini-2.5 strain wave drive reducer\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg alt=\"Reducer component manufacturing-process graphic\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0673\/6848\/5000\/files\/SITO-CD-Series-des-_5.jpg?v=1764496937\"\u003e\u003cfigcaption\u003eManufacturing process and machined reducer components graphic\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=\"Small reducer comparison graphic with 11 mm callout\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-cd-20-reducer-30-120-transm-8d0aad9d60.webp?v=1791383804\"\u003e\u003cfigcaption\u003eSmall strain wave drive reducers 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=\"Articulated robotic arm reducer application illustration\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/sito-drive-cd-20-reducer-30-120-transm-3e27a829c9.webp?v=1791383808\"\u003e\u003cfigcaption\u003eIllustration of articulated robotic arm with harmonic reducer application claim\u003c\/figcaption\u003e\u003c\/figure\u003e","brand":"SITO DRIVE","offers":[{"title":"30","offer_id":67749415387360,"sku":"SIT-64C4AEE7","price":404.4,"currency_code":"USD","in_stock":true},{"title":"50","offer_id":67749415420128,"sku":"SIT-61AA2549","price":418.8,"currency_code":"USD","in_stock":true},{"title":"80","offer_id":67749415452896,"sku":"SIT-FCDEC1A5","price":433.2,"currency_code":"USD","in_stock":true},{"title":"100","offer_id":67749415485664,"sku":"SIT-897E95FD","price":440.4,"currency_code":"USD","in_stock":true},{"title":"120","offer_id":67749415518432,"sku":"SIT-925E7E45","price":454.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/sito-drive-cd-20-reducer-angled-fro-2cb14c8fc8-01.webp?v=1791383633","url":"https:\/\/rcdrone.top\/products\/sito-drive-cd-20-reducer","provider":"RCDrone","version":"1.0","type":"link"}