{"id":1523,"date":"2021-01-20T09:53:34","date_gmt":"2021-01-20T08:53:34","guid":{"rendered":"https:\/\/www.redhillballs.com\/?page_id=1523"},"modified":"2025-09-30T16:36:01","modified_gmt":"2025-09-30T14:36:01","slug":"rockbit-kulicky-s2","status":"publish","type":"page","link":"https:\/\/www.redhillballs.com\/cs\/produkty\/kulicky-z-barevnych-kovu-a-slitin\/rockbit-kulicky-s2\/","title":{"rendered":"S2 RockBit Kuli\u010dky"},"content":{"rendered":"<h2>\ud83d\udee0\ufe0f <a href=\"https:\/\/en.wikipedia.org\/wiki\/Tool_steel\">Koule z n\u00e1strojov\u00e9 oceli S2 RockBit \u2013 n\u00e1razuvzdorn\u00e9 valiv\u00e9 prvky pro vrt\u00e1n\u00ed<\/a><\/h2>\n<p>S2 RockBit Kuli\u010dky z n\u00e1strojov\u00e9 oceli jsou navr\u017eeny z r\u00e1zuvzdorn\u00e9 n\u00e1strojov\u00e9 oceli pro extr\u00e9mn\u00ed kontaktn\u00ed nap\u011bt\u00ed, r\u00e1zy a abrazi ve vrtn\u00e9m prost\u0159ed\u00ed. Jsou tepeln\u011b zpracovan\u00e9 na vysokou tvrdost p\u0159i zachov\u00e1n\u00ed hou\u017eevnatosti a odol\u00e1vaj\u00ed odlupov\u00e1n\u00ed (spalling) a vtla\u010dov\u00e1n\u00ed (brinelling) v kalov\u00e9m provozu\u2014ide\u00e1ln\u00ed pro tri-k\u00f3nov\u00e9 vrtac\u00ed korunky, downhole n\u00e1stroje a t\u011b\u017ek\u00e9 r\u00e1zov\u00e9 mechanismy.<\/p>\n<h3>\ud83d\udd27 Kl\u00ed\u010dov\u00e9 technick\u00e9 specifikace<\/h3>\n<ul>\n<li><strong>Slo\u017een\u00ed<\/strong>: r\u00e1zuvzdorn\u00e1 n\u00e1strojov\u00e1 ocel S2 (typ.): C 0,45\u20130,55 %, Si 0,20\u20131,00 %, Mn 0,20\u20131,00 %, Cr 0,15\u20130,80 %, Mo 0,30\u20130,80 % (zbytek Fe)<\/li>\n<li><strong>Struktura<\/strong>: popu\u0161t\u011bn\u00fd martenzit s jemn\u011b rozpt\u00fdlen\u00fdmi karbidy<\/li>\n<li><strong>Tvrdost<\/strong>: Rockwell C 58\u201364 (tepeln\u011b zpracov\u00e1no)<\/li>\n<li><strong>Pevnost v tahu<\/strong>: a\u017e \u2248 2 100 MPa (dle stavu)<\/li>\n<li><strong>Hustota<\/strong>: ~7,80 g\/cm\u00b3<\/li>\n<li><strong>Koroze<\/strong>: omezen\u00e1; pro ochranu pou\u017eijte maziva\/povlaky<\/li>\n<li><strong>Magnetick\u00e9<\/strong>: pln\u011b magnetick\u00e9<\/li>\n<\/ul>\n<h3>\u2705 V\u00fdhody<\/h3>\n<ul>\n<li><strong>Vysok\u00e1 r\u00e1zov\u00e1 hou\u017eevnatost<\/strong>: odolnost proti r\u00e1z\u016fm a vibrac\u00edm<\/li>\n<li><strong>Anti-spalling\/anti-brinelling<\/strong> p\u0159i extr\u00e9mn\u00edch Hertzov\u00fdch zat\u00ed\u017een\u00edch<\/li>\n<li><strong>Odolnost proti abrazi<\/strong> v vrtn\u00e9m kalu a \u010d\u00e1stic\u00edch<\/li>\n<li><strong>Rozm\u011brov\u00e1 stabilita<\/strong> po tepeln\u00e9m zpracov\u00e1n\u00ed<\/li>\n<\/ul>\n<h3>\ud83d\udd04 Aplikace pro S2 RockBit Kuli\u010dky<\/h3>\n<ul>\n<li><strong>Lo\u017eiska tri-k\u00f3nov\u00fdch vrtac\u00edch korun<\/strong><\/li>\n<li><strong>Downhole n\u00e1stroje &amp; r\u00e1zov\u00e9 mechanismy<\/strong><\/li>\n<li><strong>T\u011b\u017ek\u00e9 pr\u016fmyslov\u00e9 lo\u017eiska<\/strong> v abrazivn\u00edch m\u00e9di\u00edch<\/li>\n<\/ul>\n<h3>\ud83d\udce6 Dostupn\u00e9 t\u0159\u00eddy &amp; velikosti<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.redhillballs.com\/company\/precision-grades\/\"><strong>T\u0159\u00eddy<\/strong>: ISO 3290, DIN 5401, AFBMA (ekvivalentn\u00ed tolerance)<\/a><\/li>\n<li><strong>Rozsah pr\u016fm\u011br\u016f<\/strong>: standardn\u00ed palcov\u00e9 a metrick\u00e9 velikosti; nestandardn\u00ed\/zak\u00e1zkov\u00e9 na po\u017e\u00e1d\u00e1n\u00ed<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udee0\ufe0f Koule z n\u00e1strojov\u00e9 oceli S2 RockBit \u2013 n\u00e1razuvzdorn\u00e9 valiv\u00e9 prvky pro vrt\u00e1n\u00ed S2 RockBit Kuli\u010dky z n\u00e1strojov\u00e9 oceli jsou navr\u017eeny z r\u00e1zuvzdorn\u00e9 n\u00e1strojov\u00e9 oceli pro extr\u00e9mn\u00ed kontaktn\u00ed nap\u011bt\u00ed, r\u00e1zy a abrazi ve vrtn\u00e9m prost\u0159ed\u00ed. Jsou tepeln\u011b zpracovan\u00e9 na vysokou tvrdost p\u0159i zachov\u00e1n\u00ed hou\u017eevnatosti a odol\u00e1vaj\u00ed odlupov\u00e1n\u00ed (spalling) a vtla\u010dov\u00e1n\u00ed (brinelling) v kalov\u00e9m provozu\u2014ide\u00e1ln\u00ed pro [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8759,"parent":1506,"menu_order":8,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1523","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>S2 RockBit kuli\u010dky \u2013 hou\u017eevnatost a odolnost v t\u011b\u017eebn\u00edm pr\u016fmyslu<\/title>\n<meta name=\"description\" content=\"S2 RockBit kuli\u010dky z n\u00e1strojov\u00e9 oceli poskytuj\u00ed vysokou hou\u017eevnatost, odolnost proti n\u00e1razu a dlouhou \u017eivotnost v 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