{"id":1554,"date":"2021-01-20T10:19:58","date_gmt":"2021-01-20T09:19:58","guid":{"rendered":"https:\/\/www.redhillballs.com\/?page_id=1554"},"modified":"2025-09-30T15:54:52","modified_gmt":"2025-09-30T13:54:52","slug":"kulicky-z-nitridu-kremiku-si3n4","status":"publish","type":"page","link":"https:\/\/www.redhillballs.com\/cs\/produkty\/keramicke-kulicky\/kulicky-z-nitridu-kremiku-si3n4\/","title":{"rendered":"Kuli\u010dky z Nitridu K\u0159em\u00edku Si3N4"},"content":{"rendered":"<p><!-- CZ --><\/p>\n<h2>\ud83d\udee0\ufe0f <a href=\"https:\/\/en.wikipedia.org\/wiki\/Ball_%28bearing%29?utm_source=chatgpt.com\">Kuli\u010dky z nitridu k\u0159em\u00edku (Si\u2083N\u2084) \u2013 vysoce v\u00fdkonn\u00e9 p\u0159esn\u00e9 komponenty<\/a><\/h2>\n<p>Keramick\u00e9 kuli\u010dky z nitridu k\u0159em\u00edku (Si\u2083N\u2084) jsou pokro\u010dil\u00e9 sou\u010d\u00e1sti proslul\u00e9 v\u00fdjime\u010dnou tvrdost\u00ed, n\u00edzkou hustotou a vynikaj\u00edc\u00ed tepelnou i ot\u011bruvzdornost\u00ed. Tyto vlastnosti je p\u0159edur\u010duj\u00ed pro n\u00e1ro\u010dn\u00e9 aplikace v letectv\u00ed, hybridn\u00edch i pln\u011b keramick\u00fdch lo\u017eisc\u00edch a vysokorychlostn\u00edch rota\u010dn\u00edch syst\u00e9mech.<\/p>\n<h3>\ud83d\udd27 Kl\u00ed\u010dov\u00e9 technick\u00e9 specifikace<\/h3>\n<ul>\n<li><strong>Hustota<\/strong>: ~3.2\u20133.3 g\/cm\u00b3 (~40 % oceli)<\/li>\n<li><strong>Tvrdost<\/strong>: &gt;2000 Knoop (cca 15 GPa Vickers)<\/li>\n<li><strong>Pevnost v ohybu<\/strong>: ~800\u20131000 MPa<\/li>\n<li><strong>Pevnost v tlaku<\/strong>: ~2500\u20133000 MPa<\/li>\n<li><strong>Modul pru\u017enosti<\/strong>: ~310\u2013320 GPa<\/li>\n<li><strong>Hou\u017eevnatost lomu (K\u2081c)<\/strong>: ~6 MPa\u00b7m\u2070\u00b7\u2075<\/li>\n<li><strong>Tepeln\u00e1 vodivost<\/strong>: ~28\u201330 W\/(m\u00b7K)<\/li>\n<li><strong>Sou\u010dinitel tepeln\u00e9 rozta\u017enosti (CTE)<\/strong>: ~3\u00d710\u207b\u2076 \/K<\/li>\n<li><strong>M\u011brn\u00fd elektrick\u00fd odpor<\/strong>: &gt;10\u00b9\u00b2 \u03a9\u00b7cm (elektrick\u00fd izolant)<\/li>\n<li><strong>Provozn\u00ed teplota<\/strong>: a\u017e ~1100\u20131200 \u00b0C<\/li>\n<li><strong>T\u0159\u00eddy<\/strong>: ISO \/ ABMA G1\u2013G60<\/li>\n<li><strong>Rozsah pr\u016fm\u011br\u016f<\/strong>: 0.5 mm \u2013 50 mm<\/li>\n<\/ul>\n<h3>\u2705 V\u00fdhody<\/h3>\n<ul>\n<li><strong>N\u00edzk\u00e1 hustota a men\u0161\u00ed odst\u0159ediv\u00e1 s\u00edla<\/strong> \u2013 leh\u010d\u00ed ne\u017e ocel, umo\u017e\u0148uje vy\u0161\u0161\u00ed rychlosti a ni\u017e\u0161\u00ed ztr\u00e1ty energie.<\/li>\n<li><strong>V\u00fdjime\u010dn\u00e1 tvrdost a odolnost proti opot\u0159eben\u00ed<\/strong> \u2013 zaji\u0161\u0165uje dlouhou \u017eivotnost v n\u00e1ro\u010dn\u00fdch podm\u00ednk\u00e1ch.<\/li>\n<li><strong>Vysok\u00e1 tepeln\u00e1 stabilita a n\u00edzk\u00e1 rozta\u017enost<\/strong> \u2013 zachov\u00e1v\u00e1 integritu p\u0159i extr\u00e9mn\u00edch zm\u011bn\u00e1ch teplot.<\/li>\n<li><strong>Elektrick\u00e1 izolace a nemagneti\u010dnost<\/strong> \u2013 bezpe\u010dn\u00e9 pou\u017eit\u00ed pobl\u00ed\u017e motor\u016f, senzor\u016f a magnetick\u00fdch pol\u00ed.<\/li>\n<li><strong>Vysok\u00e1 lomov\u00e1 hou\u017eevnatost<\/strong> \u2013 vynikaj\u00edc\u00ed odolnost proti mechanick\u00fdm r\u00e1z\u016fm.<\/li>\n<li><strong>Prodlou\u017een\u00e1 \u017eivotnost<\/strong> \u2013 ni\u017e\u0161\u00ed t\u0159en\u00ed sni\u017euje n\u00e1roky na maz\u00e1n\u00ed a \u00fadr\u017ebu.<\/li>\n<\/ul>\n<h3>\ud83d\udd04 Aplikace kuli\u010dek z nitridu k\u0159em\u00edku<\/h3>\n<p>Kuli\u010dky Si\u2083N\u2084 se \u0161iroce pou\u017e\u00edvaj\u00ed ve vysoce v\u00fdkonn\u00fdch aplikac\u00edch, v\u010detn\u011b:<\/p>\n<ul>\n<li><strong>Hybridn\u00ed a pln\u011b keramick\u00e1 lo\u017eiska<\/strong> \u2013 pro vysok\u00e9 rychlosti a n\u00edzk\u00e9 t\u0159en\u00ed.<\/li>\n<li><strong>Leteck\u00e9 motory a turb\u00edny<\/strong> \u2013 osv\u011bd\u010den\u00e9 v kritick\u00fdch pohonn\u00fdch a \u0159\u00eddic\u00edch syst\u00e9mech.<\/li>\n<li><strong>Elektromobily a motory<\/strong> \u2013 poskytuj\u00ed izolaci a odolnost v trak\u010dn\u00edch syst\u00e9mech.<\/li>\n<li><strong>Gener\u00e1tory v\u011btrn\u00fdch turb\u00edn<\/strong> \u2013 dlouhodob\u00e1 spolehlivost p\u0159i vysok\u00e9m dynamick\u00e9m nam\u00e1h\u00e1n\u00ed.<\/li>\n<li><strong>Polovodi\u010dov\u00e1 a zdravotnick\u00e1 za\u0159\u00edzen\u00ed<\/strong> \u2013 nemagnetick\u00e9, dielektrick\u00e9 vlastnosti pro citliv\u00e9 syst\u00e9my.<\/li>\n<li><strong>Pr\u016fmyslov\u00e9 n\u00e1stroje a vysokoteplotn\u00ed stroje<\/strong> \u2013 odoln\u00e9 v\u016f\u010di teplu, chemik\u00e1li\u00edm a opot\u0159eben\u00ed.<\/li>\n<\/ul>\n<h3>\ud83d\udce6 Dostupn\u00e9 t\u0159\u00eddy a rozm\u011bry<\/h3>\n<p>Kuli\u010dky z nitridu k\u0159em\u00edku jsou dostupn\u00e9 v n\u011bkolika p\u0159esnostn\u00edch t\u0159\u00edd\u00e1ch a velikostech pro r\u016fzn\u00e9 pr\u016fmyslov\u00e9 po\u017eadavky:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.redhillballs.com\/company\/precision-grades\/\"><strong>T\u0159\u00eddy<\/strong>: G1, G5, G10, a\u017e G60<\/a><\/li>\n<li><strong>Rozsah pr\u016fm\u011br\u016f<\/strong>: 0.5 mm \u2013 50 mm<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udee0\ufe0f Kuli\u010dky z nitridu k\u0159em\u00edku (Si\u2083N\u2084) \u2013 vysoce v\u00fdkonn\u00e9 p\u0159esn\u00e9 komponenty Keramick\u00e9 kuli\u010dky z nitridu k\u0159em\u00edku (Si\u2083N\u2084) jsou pokro\u010dil\u00e9 sou\u010d\u00e1sti proslul\u00e9 v\u00fdjime\u010dnou tvrdost\u00ed, n\u00edzkou hustotou a vynikaj\u00edc\u00ed tepelnou i ot\u011bruvzdornost\u00ed. Tyto vlastnosti je p\u0159edur\u010duj\u00ed pro n\u00e1ro\u010dn\u00e9 aplikace v letectv\u00ed, hybridn\u00edch i pln\u011b keramick\u00fdch lo\u017eisc\u00edch a vysokorychlostn\u00edch rota\u010dn\u00edch syst\u00e9mech. \ud83d\udd27 Kl\u00ed\u010dov\u00e9 technick\u00e9 specifikace Hustota: ~3.2\u20133.3 g\/cm\u00b3 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8939,"parent":1552,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1554","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>Kuli\u010dky z Nitridu K\u0159em\u00edku Si3N4 vysok\u00e1 odolnost a p\u0159esnost<\/title>\n<meta name=\"description\" content=\"Kuli\u010dky z Nitridu K\u0159em\u00edk\u016f pro lo\u017eiska, \u010derpadla a ventily. 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