{"id":7130,"date":"2020-05-12T12:45:41","date_gmt":"2020-05-12T12:45:41","guid":{"rendered":"https:\/\/inmotion-web.it\/?p=7130"},"modified":"2025-06-17T13:22:10","modified_gmt":"2025-06-17T13:22:10","slug":"thin-section-bearings-travelling-400-kilometres-above-the-earth","status":"publish","type":"post","link":"https:\/\/www.publiteconline.it\/inmotion\/thin-section-bearings-travelling-400-kilometres-above-the-earth\/","title":{"rendered":"Thin Section Bearings Travelling 400 kilometres above the Earth"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Thin section bearings angular contact from Kaydon will do their work in a robot on the outside of the International Space Station (ISS). <strong>Kaydon<\/strong>\u2019s bearings will guarantee trouble-free movements for the articulations of that robot. They were considered as the best possible choice on the basis of their accuracy, reliability, their efficiency in absorbing both radial and axial forces and their particularly space-saving design<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><em>by Elena Magistretti<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"462\" src=\"https:\/\/inmotion-web.it\/wp-content\/uploads\/2020\/05\/kaydon02-1.jpg\" alt=\"Each articulation connection on CAESAR weighs about three kilograms and generates output torque of 80 Nm at a maximum 10 degrees per second.\" class=\"wp-image-7131\" srcset=\"https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon02-1.jpg 800w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon02-1-350x202.jpg 350w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon02-1-130x75.jpg 130w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon02-1-768x444.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption>Each articulation connection on CAESAR weighs about three kilograms and generates output torque of 80 Nm at a maximum 10 degrees per second.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Thin section bearings from Kaydon will do their work in a robot on the outside of the International Space Station (ISS) about 400 kilometres above the surface of the Earth.<br>CAESAR (Compliant Assistance and Exploration SpAce Robot ) is equipped with a three-metre long arm with seven articulations whose function will be to attend to the performance of scientific and commercial experiments in conditions of weightlessness.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"800\" height=\"414\" src=\"https:\/\/inmotion-web.it\/wp-content\/uploads\/2020\/05\/kaydon03-1.jpg\" alt=\"CAESAR can extend to a maximum length of three metres. In its compact retracted configuration, it easily fits in a maintenance satellite.\" class=\"wp-image-7132\" srcset=\"https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon03-1.jpg 800w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon03-1-350x181.jpg 350w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon03-1-130x67.jpg 130w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon03-1-768x397.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption>CAESAR can extend to a maximum length of three metres. In its compact retracted configuration, it easily fits in a maintenance satellite.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The robot weighing 60 kilograms will be transported up to the weightless conditions of the ISS, where it will be installed 400 kilometres above the Earth\u2019s surface. This is where the exceptionally flexible folding robot arm will work, grabbing and stabilising satellites which are orbiting erratically or have become unresponsive. The German Aerospace Center (DLR), which developed CAESAR, can draw on an immense fund of experience with robots in space. A robot from the DLR was already operational on the ISS from 2005 to 2010 as part of the ROKVISS project (Robotic Components Verification on the ISS). Thin section angular contact bearings from Kaydon successfully guaranteed trouble-free movements for the articulations of that robot thanks to their load-bearing capability, reliability, and indeed the experience in space applications.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"800\" height=\"445\" src=\"https:\/\/inmotion-web.it\/wp-content\/uploads\/2020\/05\/kaydon04-1.jpg\" alt=\"For the development of the robot arm, the DLR was able to draw on its experiences with ROKVISS, the predecessor model which served in space.\" class=\"wp-image-7133\" srcset=\"https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon04-1.jpg 800w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon04-1-350x195.jpg 350w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon04-1-130x72.jpg 130w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon04-1-768x427.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption>For the development of the robot arm, the DLR  was able to draw on its experiences with ROKVISS,  the predecessor model which served in space.<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Drawing on experience with the previous project<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For CAESAR, researchers were able to draw on the many experiences gained with ROKVISS, which was partially controlled from Earth. \u201cWith ROKVISS, \u2018force feedback\u2019 on the ISS was used to test how precisely the robot arm can be manipulated with a joystick. This enables the operator on Earth to feel the force with which the robot in space is pressing against its environment. The prototype of the space robot arm was brought back to Earth in a Soyuz capsule in 2011, and the data on its state of wear was used by scientists as a basis for constructing the new model.<br>Now, CAESAR is the continuation of the force- and torque-controlled robot systems for the DLR and the space counterpart of modern service robots which are used in manufacturing and for human-robot cooperations. The new generation of robots combines innovative electronic and mechanical engineering. For example, the robot has seven degrees of freedom. This number of freely selected motion capabilities thus matches that of the human arm, endowing it with greater flexibility than standard robots. The basis for the robot that was built for research and assistance in space is the lightweight robot III, which was developed by the Institute and transferred to the world\u2019s leading robot manufacturer. KUKA, in 2003.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"440\" src=\"https:\/\/inmotion-web.it\/wp-content\/uploads\/2020\/05\/kaydon05-1.jpg\" alt=\"Kaydon thin section bearings supplied by Rodriguez had already proved their capabilities successfully in the ROKVISS robot arm.\" class=\"wp-image-7134\" srcset=\"https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon05-1.jpg 800w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon05-1-350x193.jpg 350w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon05-1-130x72.jpg 130w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon05-1-768x422.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption> Kaydon thin section bearings supplied by Rodriguez had already proved their capabilities successfully in the ROKVISS robot arm.<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Trouble-free motion and force control<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CAESAR can be operated semi-autonomously, by telecommand or with telepresence and force feedback. The impedance controller allows the arm articulations to yield and prevents them from damaging objects. The integrated torque sensor system detects unintended contact with the surroundings and enables appropriate responses, which represents a critical safety feature particularly in cooperation with astronauts. Since there is no gravitational load in space, all connections have the same torque capacity. Fast control circuits in the articulations and a high-speed, real-time communications bus connecting the articulations to the Robot Control Unit (RCU) ensure trouble-free motion and force control. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"417\" src=\"https:\/\/inmotion-web.it\/wp-content\/uploads\/2020\/05\/kaydon06-1.jpg\" alt=\"With its seven articulations, CAESAR is as agile and flexible as a human arm.\" class=\"wp-image-7135\" srcset=\"https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon06-1.jpg 800w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon06-1-350x182.jpg 350w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon06-1-130x68.jpg 130w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon06-1-768x400.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption>With its seven articulations, CAESAR is as agile and flexible as a human arm.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The connective construction includes a hollow shaft to enable internal wiring. Each articulation consists of a synchronous motor with a commutation sensor, a harmonic drive pinion and angular contact bearings, the torque sensor and a common position sensor. The choice of thin section angular contact bearings was made on the basis of their efficiency in absorbing both radial and axial forces and their particularly space-saving design. The Reali-Slim series, on which the thin section bearings used here are based, can withstand the harshest operating conditions. They feature a compact design, outstanding precision, and they are ideal for applications with such extreme demands.\u201d<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"637\" src=\"https:\/\/inmotion-web.it\/wp-content\/uploads\/2020\/05\/kaydon07-1.jpg\" alt=\"A structurally integrated torque sensor in the articulations returns torque values without friction influences in the bearings or the gearbox.\" class=\"wp-image-7136\" srcset=\"https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon07-1.jpg 800w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon07-1-350x279.jpg 350w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon07-1-130x104.jpg 130w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon07-1-768x612.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption> A structurally integrated torque sensor in the articulations returns torque values without friction influences in the bearings or the gearbox.<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Permanent passenger in orbit<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Since most services in future will be provided for geostationary satellites, the radiation hardness and service life of CAESAR have been planned for fifteen years\u2019 operation in geostationary orbit.<br>The robot as a whole is designed for temperatures between -20\u00b0 Celsius and +60\u00b0 Celsius. There are plans to build this system for further requirements as well. For this, it must be able to be adapted to various carriers, satellites or spacecraft. Production and qualification of the system must be efficient and precise to enable financial success. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"526\" src=\"https:\/\/inmotion-web.it\/wp-content\/uploads\/2020\/05\/kaydon08-1.jpg\" alt=\"Kaydon thin section bearings supplied by Rodriguez had already proved their capabilities successfully in the ROKVISS robot arm.\" class=\"wp-image-7137\" srcset=\"https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon08-1.jpg 800w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon08-1-350x230.jpg 350w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon08-1-130x85.jpg 130w, https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon08-1-768x505.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption>Kaydon thin section bearings supplied by Rodriguez had already proved their capabilities successfully in the ROKVISS robot arm.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Nicole Dahlen, Managing Director with responsibility for Sales, Marketing and Organisation with Rodriguez GmbH, Kaydon\u2019s partner in this project.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Thin section bearings angular contact from Kaydon will do their work in a robot on the outside of the International Space Station (ISS). Kaydon\u2019s bearings will guarantee trouble-free movements for the articulations of that robot. They were considered as the best possible choice on the basis of their accuracy, reliability, their efficiency in absorbing both &hellip;<\/p>\n","protected":false},"author":9,"featured_media":7121,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6689],"tags":[399],"class_list":["post-7130","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tecnologie","tag-kaydon-en"],"openstation_lock":null,"openstation_contributors":[],"openstation_attached_media":[7121,7131,7132,7133,7134,7135,7136,7137],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Thin Section Bearings Travelling 400 kilometres above the Earth - InMotion<\/title>\n<meta name=\"description\" content=\"Kaydon ha fornito i suoi cuscinetti obliqui a sfere a sezione sottile per il robot che operer\u00e0 all\u2019esterno della Stazione Spaziale Internazionale (ISS). I cuscinetti serie Reali-Slim, qui impiegati, assicurano la fluidit\u00e0 di movimento nei giunti del robot con precisione, affidabilit\u00e0 e un design compatto, rivelandosi i componenti ideali per le applicazioni pi\u00f9 esigenti dell\u2019industria spaziale.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.publiteconline.it\/inmotion\/thin-section-bearings-travelling-400-kilometres-above-the-earth\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Thin Section Bearings Travelling 400 kilometres above the Earth - InMotion\" \/>\n<meta property=\"og:description\" content=\"Kaydon ha fornito i suoi cuscinetti obliqui a sfere a sezione sottile per il robot che operer\u00e0 all\u2019esterno della Stazione Spaziale Internazionale (ISS). I cuscinetti serie Reali-Slim, qui impiegati, assicurano la fluidit\u00e0 di movimento nei giunti del robot con precisione, affidabilit\u00e0 e un design compatto, rivelandosi i componenti ideali per le applicazioni pi\u00f9 esigenti dell\u2019industria spaziale.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.publiteconline.it\/inmotion\/thin-section-bearings-travelling-400-kilometres-above-the-earth\/\" \/>\n<meta property=\"og:site_name\" content=\"InMotion\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/PubliTec-231229880307485\/\" \/>\n<meta property=\"article:published_time\" content=\"2020-05-12T12:45:41+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-17T13:22:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.publiteconline.it\/inmotion\/wp-content\/uploads\/2020\/05\/kaydon01-ap.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"533\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Alessandro Guerrato\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@PubliTec_Srl\" \/>\n<meta name=\"twitter:site\" content=\"@PubliTec_Srl\" \/>\n<meta name=\"twitter:label1\" content=\"Scritto da\" \/>\n\t<meta name=\"twitter:data1\" content=\"Alessandro Guerrato\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo di lettura stimato\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minuti\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.publiteconline.it\\\/inmotion\\\/thin-section-bearings-travelling-400-kilometres-above-the-earth\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.publiteconline.it\\\/inmotion\\\/thin-section-bearings-travelling-400-kilometres-above-the-earth\\\/\"},\"author\":{\"name\":\"Alessandro Guerrato\",\"@id\":\"https:\\\/\\\/www.publiteconline.it\\\/inmotion\\\/#\\\/schema\\\/person\\\/a1bb7f5c6ae954e87c5cb2fecdf6ec9c\"},\"headline\":\"Thin Section Bearings Travelling 400 kilometres above the Earth\",\"datePublished\":\"2020-05-12T12:45:41+00:00\",\"dateModified\":\"2025-06-17T13:22:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.publiteconline.it\\\/inmotion\\\/thin-section-bearings-travelling-400-kilometres-above-the-earth\\\/\"},\"wordCount\":931,\"publisher\":{\"@id\":\"https:\\\/\\\/www.publiteconline.it\\\/inmotion\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.publiteconline.it\\\/inmotion\\\/thin-section-bearings-travelling-400-kilometres-above-the-earth\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.publiteconline.it\\\/inmotion\\\/wp-content\\\/uploads\\\/2020\\\/05\\\/kaydon01-ap.jpg\",\"keywords\":[\"Kaydon\"],\"articleSection\":[\"Tecnologie\"],\"inLanguage\":\"it-IT\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.publiteconline.it\\\/inmotion\\\/thin-section-bearings-travelling-400-kilometres-above-the-earth\\\/\",\"url\":\"https:\\\/\\\/www.publiteconline.it\\\/inmotion\\\/thin-section-bearings-travelling-400-kilometres-above-the-earth\\\/\",\"name\":\"Thin Section Bearings Travelling 400 kilometres above the Earth - InMotion\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.publiteconline.it\\\/inmotion\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.publiteconline.it\\\/inmotion\\\/thin-section-bearings-travelling-400-kilometres-above-the-earth\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.publiteconline.it\\\/inmotion\\\/thin-section-bearings-travelling-400-kilometres-above-the-earth\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.publiteconline.it\\\/inmotion\\\/wp-content\\\/uploads\\\/2020\\\/05\\\/kaydon01-ap.jpg\",\"datePublished\":\"2020-05-12T12:45:41+00:00\",\"dateModified\":\"2025-06-17T13:22:10+00:00\",\"description\":\"Kaydon ha fornito i suoi cuscinetti obliqui a sfere a sezione sottile per il robot che operer\u00e0 all\u2019esterno della Stazione Spaziale Internazionale (ISS). 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