{"id":4853,"date":"2013-10-24T18:28:52","date_gmt":"2013-10-24T22:28:52","guid":{"rendered":"http:\/\/74.220.216.78\/?p=4853"},"modified":"2021-05-06T16:01:18","modified_gmt":"2021-05-06T20:01:18","slug":"fiber-lube-bearing-wear","status":"publish","type":"post","link":"https:\/\/daemar.com\/fr\/fiber-lube-bearing-wear.html\/","title":{"rendered":"Usure des roulements"},"content":{"rendered":"<p><a href=\"https:\/\/daemar.com\/fr\">Accueil<\/a>\u00a0&gt;&gt;\u00a0<a href=\"https:\/\/daemar.com\/fr\/slide.html\">Roulement<\/a>\u00a0&gt;&gt;\u00a0<a href=\"https:\/\/daemar.com\/fr\/fiber-lube-63.html\">Coussinets Fiber-Lube<\/a> &gt;&gt; Usure des roulements CJ \/ FCJ Fiber-Lube<\/p>\n<div class=\"row-fluid\"><\/div>\n<div class=\"row-fluid\">\n<div class=\"row-fluid\">\n<div class=\"rhcol span7\">\n<h1>Usure des roulements<\/h1>\n<p>Prendre en compte la conception lors du choix de palier en fibres autolubrifi\u00e9s adapt\u00e9es \u00e0 votre application.\u00a0 Les facteurs qui influent sur l\u2019usure des paliers comprennent la capacit\u00e9 de charge, la lubrification, les conditions de fonctionnement (facteur PV, finition de l\u2019arbre, temp\u00e9rature\u2026).<\/p>\n<\/div>\n<div class=\"rhcol span1\"><\/div>\n<div class=\"rhcol span4\">\n<div class=\"toggle-box\"><h3 class=\"toggle-title sws_toggle1\">Ressources techniques<\/h3><div class=\"toggle-content\"><\/p>\n<ul>\n<li><a href=\"https:\/\/daemar.com\/wp-content\/uploads\/2021\/04\/DMR_CJ_TechSheet-T1G-062_OAKF.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Fiche technique de la s\u00e9rie CJ \/ FCJ<\/a><\/li>\n<li><a href=\"http:\/\/catalog.daemar.com\/category\/fiber-lube-trade-\">Catalogue en ligne CJ \/ FCJ<\/a><\/li>\n<li><a title=\"Fiber Lube Lubrications\" href=\"https:\/\/daemar.com\/fr\/fiber-lube-lubrications.html\/\">Exigences de lubrification S\u00e9rie CJ \/ FCJ<\/a><\/li>\n<li><a title=\"CJ\/FCJ Fiber Lube Installation\" href=\"https:\/\/daemar.com\/fr\/cjfcj-fiber-lube-installation.html\/\">Guide d&#8217;installation S\u00e9rie CJ \/ FCJ<\/a><\/li>\n<li><a title=\"Bushing Interchange\" href=\"https:\/\/daemar.com\/fr\/bushing-interchange.html\/\">\u00c9change<\/a><\/li>\n<li><a href=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/DMR_ApplicationDataSheet-FiberLube_T0G-071.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Fiche de donn\u00e9es d\u2019application \u2013 Lubrifiant pour fibre<\/a><\/li>\n<li><a href=\"https:\/\/daemar.com\/wp-content\/uploads\/2021\/05\/DMR_Bushing_PV_Comparison_T0G-090.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Comparaison PV du mat\u00e9riau des travers\u00e9es<\/a><\/li>\n<\/ul>\n<p><\/div><\/div>\n<\/div>\n<\/div>\n<hr style=\"border: 1px solid #cecece\" \/>\n<p>&nbsp;<\/p>\n<div class=\"row-fluid\">\n<div class=\"rhcol span4\">\n<p>\u00a0<a href=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/CJcomposite_chart.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-4859\" src=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/CJcomposite_chart-295x1024.jpg\" alt=\"CJcomposite_chart\" width=\"295\" height=\"1024\" srcset=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/CJcomposite_chart-295x1024.jpg 295w, https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/CJcomposite_chart-86x300.jpg 86w, https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/CJcomposite_chart.jpg 951w\" sizes=\"auto, (max-width: 295px) 100vw, 295px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<div class=\"rhcol span8\">La\u00a0<strong>figure A<\/strong> illustre le comportement d\u2019usure typique d\u2019un roulement CJ ou FCJ. Il y a une p\u00e9riode de rodage initiale pendant laquelle un film de transfert est \u00e9tabli sur la surface de contact. Dans certaines situations, une usure allant jusqu\u2019\u00e0 0,001 po (0,03 mm) peut se produire lors du rodage et dans d\u2019autres situations, l\u2019usure peut \u00eatre n\u00e9gligeable. Apr\u00e8s la p\u00e9riode de rodage, le taux d\u2019usure se stabilise et reste relativement constant pendant toute la dur\u00e9e de vie du roulement. Il y a un film de transfert de PTFE, d\u2019\u00e9poxy et de fibre synth\u00e9tique qui adh\u00e8re de mani\u00e8re tenace \u00e0 la surface m\u00e9tallique et agit comme un lubrifiant entre l\u2019arbre et le roulement.<br \/>\nLe taux d\u2019usure \u00e0 l\u2019\u00e9quilibre d\u00e9pend d\u2019un certain nombre de facteurs, notamment les charges, les vitesses, la duret\u00e9 de l\u2019arbre et l\u2019\u00e9tat de surface de l\u2019arbre. Dans des conditions de laboratoire, l\u2019usure radiale est approximativement proportionnelle \u00e0 la fois \u00e0 la distance de glissement et \u00e0 la charge. Le taux d\u2019usure est souvent indiqu\u00e9 comme un facteur K. Cette relation peut \u00eatre exprim\u00e9e comme suit:<\/p>\n<div class=\"row-fluid\">\n<div class=\"span6 rhcol\"><a href=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/factor-k-fiber-lube.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-4872\" src=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/factor-k-fiber-lube-300x287.jpg\" alt=\"factor-k-fiber-lube\" width=\"180\" height=\"172\" srcset=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/factor-k-fiber-lube-300x287.jpg 300w, https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/factor-k-fiber-lube-400x383.jpg 400w, https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/factor-k-fiber-lube.jpg 413w\" sizes=\"auto, (max-width: 180px) 100vw, 180px\" \/><\/a><\/div>\n<\/div>\n<p><strong><br \/>\n<\/strong>Le tableau suivant montre le facteur d&#8217;usure r\u00e9el mesur\u00e9 pour un certain nombre de conditions d&#8217;oscillation et de rotation. Ces valeurs ont \u00e9t\u00e9 obtenues \u00e0 l&#8217;aide d&#8217;arbres Rc 50 avec un \u00e9tat de surface de 16 Ra (0,4 \u00b5m).<br \/>\nLe facteur d&#8217;usure augmenterait si le mat\u00e9riau de la tige \u00e9tait plus tendre ou la finition de surface plus rugueuse.<br \/>\nLes performances en utilisant les arbres plus souples \u00e9taient nettement inf\u00e9rieures, en particulier dans des conditions de charge plus \u00e9lev\u00e9e.<br \/>\nBien que les performances soient inf\u00e9rieures, elles conviennent \u00e0 de nombreuses applications moins exigeantes.<\/p>\n<div class=\"row-fluid\">\n<div class=\"span6 rhcol\"><a href=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/measured-wear-factor-fibre-lube.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-4876\" src=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/measured-wear-factor-fibre-lube-195x300.jpg\" alt=\"measured-wear-factor-fibre-lube\" width=\"195\" height=\"300\" srcset=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/measured-wear-factor-fibre-lube-195x300.jpg 195w, https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/measured-wear-factor-fibre-lube-667x1024.jpg 667w, https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/measured-wear-factor-fibre-lube-390x600.jpg 390w, https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/measured-wear-factor-fibre-lube.jpg 707w\" sizes=\"auto, (max-width: 195px) 100vw, 195px\" \/><\/a><\/div>\n<\/div>\n<p>En utilisant des facteurs d&#8217;usure, l&#8217;usure radiale d&#8217;un roulement CJ peut \u00eatre estim\u00e9e en calculant W et en ajoutant 0,001 po (0,025 mm) pour l&#8217;usure par rodage. La doublure peut supporter une usure de 0,015 \u00e0 0,020 po (0,38 mm \u00e0 0,51 mm) tout en fonctionnant normalement. Les roulements ayant un diam\u00e8tre int\u00e9rieur de plus de 2-1 \/ 2 &#8220;ont une doublure plus \u00e9paisse capable de supporter une usure de 0,025&#8221; \u00e0 0,030 &#8220;(0,64 mm &#8211; 0,76 mm). La finition de surface affecte le taux d&#8217;usure comme le montre la (<strong>Voir la Figure B<\/strong>, <strong>\u00e0 gauche<\/strong>) L&#8217;exp\u00e9rience sur le terrain a montr\u00e9 que le chromage dur donne d&#8217;excellentes performances d&#8217;usure et prot\u00e8ge l&#8217;arbre de la corrosion. Les rev\u00eatements plus doux tels que le cadmium et le zinc ne r\u00e9sistent pas en service et s&#8217;usent rapidement.<\/p>\n<p><strong>Capacit\u00e9 de chargement<\/strong><br \/>\nL&#8217;application normale de la charge entra\u00eenera une simple d\u00e9formation \u00e9lastique du roulement CJ avec un certain jeu permanent. L&#8217;ensemble est principalement d\u00fb au compactage de la doublure en fibre synth\u00e9tique \/ PTFE. Nous ne recommandons g\u00e9n\u00e9ralement pas de soumettre les roulements \u00e0 une charge de plus de 35 000 psi (241 MPa). Comme d&#8217;autres mat\u00e9riaux, les composites fibre de verre \/ \u00e9poxy peuvent subir une fatigue apr\u00e8s une application r\u00e9p\u00e9t\u00e9e de contraintes. La fatigue n&#8217;a pas \u00e9t\u00e9 un facteur limitant dans l&#8217;utilisation du roulement CJ. En fait, des tests en laboratoire ont montr\u00e9 que dans de nombreux cas, le roulement est plus r\u00e9sistant \u00e0 la fatigue que l&#8217;arbre. Les tests en laboratoire montrent que les roulements \u00e9chouent par une action d&#8217;\u00e9crasement graduelle plut\u00f4t que par une panne catastrophique rapide. Ceci est coh\u00e9rent avec un comportement composite typique dans lequel la contrainte est support\u00e9e par de nombreuses fibres. Si une fibre se casse, la charge est redistribu\u00e9e entre les autres. La rupture de la structure enti\u00e8re ne se produira pas tant qu&#8217;un grand nombre de fibres individuelles ne seront pas rompues. Les roulements composites CJ peuvent facilement supporter une charge statique de plus de 35 000 psi (241 MPa) ou une charge dynamique de 20 000 psi (140 MPa) avec une grande fiabilit\u00e9.<br \/>\nDans de nombreux cas, une charge plus \u00e9lev\u00e9e peut \u00eatre tol\u00e9r\u00e9e si la conception et les conditions de service sont discut\u00e9es en d\u00e9tail avec le sp\u00e9cialiste des roulements Daemar.<br \/>\nLe rapport longueur \/ diam\u00e8tre est \u00e9galement une consid\u00e9ration de conception importante. Les r\u00e9sultats des tests en laboratoire et sur le terrain ont montr\u00e9 que les performances optimales peuvent \u00eatre atteintes en sp\u00e9cifiant un rapport longueur \/ diam\u00e8tre int\u00e9rieur (L \/ D) allant de 0,5 \u00e0 2. Lorsque le rapport L \/ D inf\u00e9rieur \u00e0 0,5 est utilis\u00e9 , il est possible de cr\u00e9er des zones fortement sollicit\u00e9es au coin du roulement et des fissures se produiront pr\u00e9matur\u00e9ment \u00e0 cet endroit. Si le rapport L \/ D est sup\u00e9rieur \u00e0 2, avec une quantit\u00e9 quelconque de d\u00e9salignement de l&#8217;arbre, un coin crois\u00e9 se bloquera et les contraintes de l&#8217;unit\u00e9 peuvent d\u00e9passer la limite dynamique de s\u00e9curit\u00e9 de 15000 psi (103 MPa) ou la limite statique de 35000 psi (241 MPa) des roulements . Les roulements construits avec le bon rapport L \/ D accepteront un d\u00e9salignement et une charge de choc sans d\u00e9faillance pr\u00e9matur\u00e9e.<\/p>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"row-fluid\">\n<div class=\"rhcol span4\"><a href=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/figure-e-f-bearing-wear.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-4874\" src=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/figure-e-f-bearing-wear-603x1024.jpg\" alt=\"figure-e-f--bearing-wear\" width=\"290\" height=\"491\" srcset=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/figure-e-f-bearing-wear-603x1024.jpg 603w, https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/figure-e-f-bearing-wear.jpg 753w\" sizes=\"auto, (max-width: 290px) 100vw, 290px\" \/><\/a><\/div>\n<div class=\"rhcol span8\"><strong>Coefficient de friction<\/strong><br \/>\nLe coefficient de frottement d&#8217;un palier lisse composite rev\u00eatu de fibre synth\u00e9tique \/ PTFE fonctionnant contre un arbre en acier tremp\u00e9 Rc 50 avec une surface de 16 Ra (0,4 \u03bcm) ou moins varie de 0,02 \u00e0 0,25 en fonction de la charge, la valeur relative vitesse de glissement et temp\u00e9rature de la surface du roulement. En g\u00e9n\u00e9ral, le coefficient de frottement diminue avec l&#8217;augmentation de la charge (<strong>voir la figure D, sur le c\u00f4t\u00e9 gauche<\/strong>).<br \/>\nCes informations indiquent que si le coefficient de frottement le plus bas est souhait\u00e9, le plus petit roulement capable de supporter la charge doit \u00eatre utilis\u00e9 et que les roulements sont capables de fonctionner au mieux dans des conditions de fonctionnement de pointe lorsque les temp\u00e9ratures et les charges peuvent \u00eatre plus \u00e9lev\u00e9es.<\/p>\n<div class=\"row-fluid\">\n<div class=\"rhcol span6\">\n<p><strong>Lubrification<\/strong><br \/>\nLa surface d&#8217;usure en fibre synth\u00e9tique \/ tissu PTFE du roulement CJ est un syst\u00e8me de lubrification limite autonome; cependant, l&#8217;ajout de lubrifiants conventionnels am\u00e9liore souvent les performances globales du roulement CJ. \u00abLubrifiant\u00bb est un terme tr\u00e8s g\u00e9n\u00e9ral, et on dit souvent que tout liquide agira comme un lubrifiant. Dans une certaine mesure, cela est vrai si les conditions hydrodynamiques sont \u00e9tablies et que les surfaces ont un contact minimal. Le palier composite, dans les engins de terrassement, fonctionne g\u00e9n\u00e9ralement dans un \u00e9tat de lubrification limite. Les huiles hydrocarbon\u00e9es sont avantageuses et peuvent produire des r\u00e9ductions d\u00e9cupl\u00e9es des taux d&#8217;usure. Les lubrifiants liquides peuvent \u00e9vacuer la chaleur et r\u00e9duire le coefficient de frottement. Les graisses peuvent \u00eatre utilis\u00e9es pour la lubrification, pour \u00e9viter la corrosion et emp\u00eacher la contamination du tourillon. En mouvement oscillant, la doublure en fibre synth\u00e9tique \/ PTFE agit comme un v\u00e9ritable lubrifiant limite lorsque la direction du mouvement change et que le film de lubrification s&#8217;effondre. En rotation, avec lubrification \u00e0 l&#8217;huile, le taux d&#8217;usure du composite CJ a \u00e9t\u00e9 trouv\u00e9 \u00e9gal \u00e0 celui des roulements en bronze fritt\u00e9 ou coul\u00e9. Les huiles et graisses fluorocarbon\u00e9es doivent \u00eatre \u00e9vit\u00e9es car elles se sont av\u00e9r\u00e9es ramollir les fibres synth\u00e9tiques et augmenter consid\u00e9rablement le taux d&#8217;usure. Il est possible d&#8217;ajouter des trous de lubrification au roulement CJ, mais les rainures ne sont pas pratiques. La r\u00e9sistance \u00e0 l&#8217;abrasion des fibres synth\u00e9tiques rend la fabrication des rainures difficile et co\u00fbteuse.<\/p>\n<\/div>\n<div class=\"span6 rhcol\">\n<p><strong>Propri\u00e9t\u00e9s thermiques<\/strong><br \/>\nLa plage de temp\u00e9rature de fonctionnement des roulements CJ est de -320 \u00b0 F \u00e0 + 300 \u00b0 F (-195 \u00b0 C \u00e0 + 149 \u00b0 C). Le roulement a \u00e9t\u00e9 stabilis\u00e9 thermiquement \u00e0 une temp\u00e9rature sup\u00e9rieure \u00e0 300 \u00b0 F (149 \u00b0 C) et tr\u00e8s peu de changement dimensionnel se produira dans le roulement pendant le fonctionnement. \u00c0 l&#8217;\u00e9tat libre, le coefficient de dilatation du roulement CJ dans la direction radiale est d&#8217;environ 7 x 10-6 po \/ po \/ \u00b0 F. Lors d&#8217;un ajustement serr\u00e9 dans un bo\u00eetier, le roulement CJ assume le coefficient de dilatation du mat\u00e9riau du bo\u00eetier, tant que l&#8217;ajustement serr\u00e9 est maintenu, et ainsi le module \u00e9lastique du roulement est maintenu, car le module \u00e9lastique du roulement est inf\u00e9rieur \u00e0 le module d&#8217;\u00e9lasticit\u00e9 de la plupart des m\u00e9taux.<br \/>\nLe composite CJ est un isolant thermique et lorsque la chaleur est g\u00e9n\u00e9r\u00e9e par le frottement de fonctionnement, la surface d&#8217;usure du roulement peut \u00eatre plus chaude que le bo\u00eetier adjacent en raison du retard thermique.<br \/>\n\u00c9tant donn\u00e9 que le roulement install\u00e9 ne peut pas se dilater vers l&#8217;ext\u00e9rieur, il pousse vers l&#8217;int\u00e9rieur, ce qui r\u00e9duit le jeu d&#8217;arbre. Pour cette raison, le jeu d&#8217;arbre doit \u00eatre augment\u00e9 pour les applications de fonctionnement \u00e0 sec qui ont des vitesses de fonctionnement \u00e9lev\u00e9es. Naturellement, le refroidissement des fluides et les lubrifiants r\u00e9duiront les temp\u00e9ratures de fonctionnement. Le transfert de chaleur \u00e0 travers la paroi porteuse est proportionnel \u00e0 l&#8217;\u00e9paisseur de la paroi, et plus la paroi composite est fine, plus le transfert de chaleur est important.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"row-fluid\">\n<div class=\"rhcol span4\">\n<p><strong>Mesure de la PV de fonctionnement<\/strong><br \/>\nLe PV est un moyen de mesurer les capacit\u00e9s de performance des roulements. P est exprim\u00e9 en pression ou en livres par pouce carr\u00e9 sur la surface portante projet\u00e9e. V est la vitesse en pieds par minute de la surface d&#8217;usure.<br \/>\nPour les paliers lisses, la vitesse de surface V est de 0,262 x tr \/ min x diam\u00e8tre en pouces.<br \/>\nP est \u00e9gal \u00e0 la charge sur le roulement en livres divis\u00e9e par la surface projet\u00e9e en pouces carr\u00e9s.<br \/>\nPour les paliers lisses, la surface projet\u00e9e correspond \u00e0 la longueur multipli\u00e9e par le diam\u00e8tre du palier.<br \/>\nPV est alors obtenu en multipliant le P x \u200b\u200bV comme indiqu\u00e9 dans l&#8217;exemple suivant:<\/p>\n<div class=\"row-fluid\">\n<div class=\"rhcol span12\"><a href=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/pv-calculations-fiber-lube.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-4877\" src=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/pv-calculations-fiber-lube-300x286.jpg\" alt=\"pv-calculations-fiber-lube\" width=\"210\" height=\"200\" srcset=\"https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/pv-calculations-fiber-lube-300x286.jpg 300w, https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/pv-calculations-fiber-lube-400x381.jpg 400w, https:\/\/daemar.com\/fr\/wp-content\/uploads\/sites\/3\/2013\/10\/pv-calculations-fiber-lube.jpg 625w\" sizes=\"auto, (max-width: 210px) 100vw, 210px\" \/><\/a><\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<\/div>\n<div class=\"rhcol span4\">\n<p><strong>Propri\u00e9t\u00e9s m\u00e9caniques<\/strong><br \/>\nLe roulement CJ a r\u00e9sist\u00e9 \u00e0 des charges statiques sup\u00e9rieures \u00e0 50 000 psi (345 MPa) \u00e0 temp\u00e9rature ambiante. Cependant, nous ne recommandons g\u00e9n\u00e9ralement pas de charges statiques sup\u00e9rieures \u00e0 35 000 psi (241 MPa). Aux limites de charge recommand\u00e9es, un \u00e9crasement minimal se produira. \u00c0 mesure que la temp\u00e9rature augmente, la capacit\u00e9 de charge du roulement diminue.<br \/>\nLe support composite a tendance \u00e0 jouer le r\u00f4le d&#8217;amortisseur et r\u00e9duit les vibrations. La vitesse maximale est de 150 pieds de surface par minute pour les applications fonctionnant \u00e0 sec.<\/p>\n<\/div>\n<div class=\"rhcol span4\">\n<p><strong>R\u00e9sistance \u00e0 la corrosion<\/strong><br \/>\nLe roulement CJ n&#8217;est pas affect\u00e9 par les environnements corrosifs. Certaines solutions d&#8217;acides hautement concentr\u00e9s attaqueront le mat\u00e9riau de support. Des informations sp\u00e9cifiques peuvent \u00eatre obtenues aupr\u00e8s de notre service technique. L&#8217;arbre doit \u00eatre en acier inoxydable ou chrom\u00e9 si un acier alli\u00e9 est utilis\u00e9. Le roulement CJ ne peut pas rouiller, mais lors de l&#8217;utilisation d&#8217;un lubrifiant, il doit contenir un inhibiteur de rouille pour prot\u00e9ger l&#8217;arbre.<\/p>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><em id=\"__mceDel\" style=\"font-size: 13px;line-height: 19px\">\u00a0<\/em><\/p>\n<\/div>\n<hr style=\"border: 1px solid #cecece\" \/>\n<h4><\/h4>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Accueil\u00a0&gt;&gt;\u00a0Roulement\u00a0&gt;&gt;\u00a0Coussinets Fiber-Lube &gt;&gt; Usure des roulements CJ \/ FCJ Fiber-Lube Usure des roulements Prendre en compte la conception lors du choix de palier en fibres [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":11152,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[54,2],"tags":[308,309],"class_list":["post-4853","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-resources","category-slide","tag-bearing-wear","tag-fiber-lube"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Usure des roulements - Daemar Inc \u2014 Joints Toriques - \u00c9tanch\u00e9it\u00e9 - Bagues de retenue - Coussinets - Caplugs - Cales de support - Clefs en barre<\/title>\n<meta name=\"description\" content=\"Design consideration when selecting the correct fiber-lube bushing for your application. 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