{"id":2047,"date":"2021-01-20T15:31:28","date_gmt":"2021-01-20T14:31:28","guid":{"rendered":"https:\/\/www.redhillballs.com\/?page_id=2047"},"modified":"2025-09-29T23:11:57","modified_gmt":"2025-09-29T21:11:57","slug":"galets-a-aiguilles-nrb-a-extremites-planes","status":"publish","type":"page","link":"https:\/\/www.redhillballs.com\/fr\/produits\/rouleaux-et-aiguilles\/galets-a-aiguilles-nrb-a-extremites-planes\/","title":{"rendered":"Galets \u00e0 aiguilles NRB \u00e0 extr\u00e9mit\u00e9s planes"},"content":{"rendered":"<h2>\ud83d\udee0\ufe0f <a href=\"https:\/\/en.wikipedia.org\/wiki\/Needle_roller_bearing?utm_source=chatgpt.com\">Galets \u00e0 aiguilles NRB \u00e0 extr\u00e9mit\u00e9s planes \u2013 Galets \u00e0 bouts plats pour ensembles rigides et fortement charg\u00e9s<\/a><\/h2>\n<p>Les galets \u00e0 aiguilles NRB \u00e0 extr\u00e9mit\u00e9s planes sont des \u00e9l\u00e9ments \u00e0 bout plat utilis\u00e9s dans des cages de pr\u00e9cision et des ensembles de roulements \u00e0 aiguilles, o\u00f9 de fortes charges radiales, un faible frottement et un encombrement r\u00e9duit sont essentiels. La g\u00e9om\u00e9trie \u00e0 extr\u00e9mit\u00e9 plane permet un positionnement axial pr\u00e9cis dans les cages et bagues d\u2019extr\u00e9mit\u00e9, garantissant une rotation stable dans des syst\u00e8mes bien align\u00e9s tels que bo\u00eetes de vitesses, transmissions, guidages lin\u00e9aires et autres m\u00e9canismes de contr\u00f4le du mouvement.<\/p>\n<h3>\ud83d\udd27 Caract\u00e9ristiques techniques cl\u00e9s<\/h3>\n<ul>\n<li><strong>G\u00e9om\u00e9trie des extr\u00e9mit\u00e9s<\/strong> : NRB = extr\u00e9mit\u00e9s planes des deux c\u00f4t\u00e9s pour un positionnement axial pr\u00e9cis et un guidage simple de la cage (vs. extr\u00e9mit\u00e9s sph\u00e9riques).<\/li>\n<li><strong>Normes<\/strong> : Fabrication selon DIN 5402-3 \/ ISO 3096 (classes dimensionnelles et de pr\u00e9cision).<\/li>\n<li><strong>Mat\u00e9riaux<\/strong> : Acier \u00e0 roulement au chrome 100Cr6 (AISI 52100) ; options inox (AISI 420C\/440C) et c\u00e9ramiques\/carbures techniques sur demande.<\/li>\n<li><strong>Duret\u00e9 (AISI 52100)<\/strong> : ~60\u201366 HRC apr\u00e8s traitement thermique.<\/li>\n<li><strong>\u00c9tat de surface<\/strong> : Diam\u00e8tre ext\u00e9rieur (OD) finement rectifi\u00e9 et superfinition pour faible frottement et faux-rond constant.<\/li>\n<li><strong>Dimensions typiques<\/strong> : Diam\u00e8tre Dw \u2248 1,0\u20136,0 mm ; longueur Lw \u2248 5,8\u201359,8 mm (autres tailles selon plan).<\/li>\n<li><strong>Tol\u00e9rances typiques<\/strong> : Diam\u00e8tre 0\/\u221210 \u00b5m ; classes de pr\u00e9cision G2, G3, G5 (selon ISO 3096\/DIN 5402-3).<\/li>\n<\/ul>\n<h3>\u2705 Avantages<\/h3>\n<ul>\n<li><strong>Forte capacit\u00e9 radiale<\/strong> avec section minimale pour conceptions compactes.<\/li>\n<li><strong>Positionnement axial pr\u00e9cis<\/strong> et conception directe des alv\u00e9oles de cage gr\u00e2ce aux extr\u00e9mit\u00e9s planes.<\/li>\n<li><strong>Faible frottement &amp; faux-rond constant<\/strong> gr\u00e2ce au tri serr\u00e9 et \u00e0 la haute qualit\u00e9 de surface.<\/li>\n<li><strong>Polyvalence des mat\u00e9riaux<\/strong> pour exigences d\u2019usure, de corrosion ou de temp\u00e9rature.<\/li>\n<\/ul>\n<h3>\ud83d\udd04 Applications typiques des galets \u00e0 aiguilles NRB \u00e0 extr\u00e9mit\u00e9s planes<\/h3>\n<ul>\n<li><strong>Cages \u00e0 aiguilles &amp; ensembles de roulements<\/strong> dans r\u00e9ducteurs, trains plan\u00e9taires &amp; engrenages harmoniques.<\/li>\n<li><strong>Transmissions automobiles<\/strong> et sous-ensembles compacts du groupe motopropulseur.<\/li>\n<li><strong>Guidages lin\u00e9aires<\/strong>, machines-outils, petits moteurs et syst\u00e8mes de mouvement.<\/li>\n<\/ul>\n<h3>\ud83d\udce6 Grades &amp; dimensions disponibles<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.redhillballs.com\/company\/precision-grades\/\"><strong>Grades<\/strong> : G2\u2013G5<\/a> (selon DIN 5402-3 \/ ISO 3096) ; s\u00e9lections sp\u00e9ciales sur demande.<\/li>\n<li><strong>Plage de diam\u00e8tres<\/strong> : ~1,0\u20136,0 mm (type NRB) ; <strong>Longueurs<\/strong> : ~5,8\u201359,8 mm.<\/li>\n<li><strong>Types associ\u00e9s<\/strong> : NRB (extr\u00e9mit\u00e9s planes)<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-269\" src=\"https:\/\/www.redhillballs.com\/wp-content\/uploads\/2021\/01\/needle-roller-nrb-flat-ends.jpg\" alt=\"\" width=\"400\" height=\"246\" srcset=\"https:\/\/www.redhillballs.com\/wp-content\/uploads\/2021\/01\/needle-roller-nrb-flat-ends.jpg 400w, https:\/\/www.redhillballs.com\/wp-content\/uploads\/2021\/01\/needle-roller-nrb-flat-ends-300x185.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udee0\ufe0f Galets \u00e0 aiguilles NRB \u00e0 extr\u00e9mit\u00e9s planes \u2013 Galets \u00e0 bouts plats pour ensembles rigides et fortement charg\u00e9s Les galets \u00e0 aiguilles NRB \u00e0 extr\u00e9mit\u00e9s planes sont des \u00e9l\u00e9ments \u00e0 bout plat utilis\u00e9s dans des cages de pr\u00e9cision et des ensembles de roulements \u00e0 aiguilles, o\u00f9 de fortes charges radiales, un faible frottement et [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6984,"parent":2043,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2047","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Galets \u00e0 aiguilles NRB \u00e0 extr\u00e9mit\u00e9s planes \u2013 Pr\u00e9cision<\/title>\n<meta name=\"description\" content=\"Galets \u00e0 aiguilles NRB \u00e0 extr\u00e9mit\u00e9s planes : robustes, pr\u00e9cis et durables, adapt\u00e9s aux roulements compacts et aux charges \u00e9lev\u00e9es.\" \/>\n<meta name=\"robots\" content=\"index, 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