{"id":1748,"date":"2021-01-20T09:53:34","date_gmt":"2021-01-20T08:53:34","guid":{"rendered":"https:\/\/www.redhillballs.com\/produkty\/kulicky-z-barevnych-kovu-a-slitin\/rockbit-kulicky-s2\/"},"modified":"2025-10-24T16:49:13","modified_gmt":"2025-10-24T14:49:13","slug":"rockbit-gulicky-s2","status":"publish","type":"page","link":"https:\/\/www.redhillballs.com\/sk\/produkty\/gulicky-z-nezeleznych-kovov-a-zliatin\/rockbit-gulicky-s2\/","title":{"rendered":"Rockbit guli\u010dky (S2)"},"content":{"rendered":"<h2>\ud83d\udee0\ufe0f <a href=\"https:\/\/en.wikipedia.org\/wiki\/Tool_steel\">Guli\u010dky z n\u00e1strojovej ocele S2 RockBit \u2013 n\u00e1razuvzdorn\u00e9 lo\u017eiskov\u00e9 prvky pre v\u0155tanie<\/a><\/h2>\n<p>Rockbit guli\u010dky (S2) z r\u00e1zuvzdornej n\u00e1strojovej ocele s\u00fa navrhnut\u00e9 pre extr\u00e9mne kontaktn\u00e9 nap\u00e4tia, n\u00e1razy a abraziu v prostred\u00ed v\u0155tania. S\u00fa tepelne spracovan\u00e9 na vysok\u00fa tvrdos\u0165 pri zachovan\u00ed h\u00fa\u017eevnatosti a odol\u00e1vaj\u00fa odlupovaniu (spalling) a vtla\u010dovaniu (brinelling) v kalovej prev\u00e1dzke\u2014ide\u00e1lne pre tri-k\u00f3nov\u00e9 vrt\u00e1ky, downhole n\u00e1stroje a \u0165a\u017ek\u00e9 \u00faderov\u00e9 mechanizmy.<\/p>\n<h3>\ud83d\udd27 K\u013e\u00fa\u010dov\u00e9 technick\u00e9 \u0161pecifik\u00e1cie<\/h3>\n<ul>\n<li><strong>Zlo\u017eenie<\/strong>: r\u00e1zuvzdorn\u00e1 n\u00e1strojov\u00e1 oce\u013e 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 % (zvy\u0161ok Fe)<\/li>\n<li><strong>\u0160trukt\u00fara<\/strong>: popusten\u00fd martenzit s jemne rozpt\u00fdlen\u00fdmi karbidmi<\/li>\n<li><strong>Tvrdos\u0165<\/strong>: Rockwell C 58\u201364 (tepelne upraven\u00e9)<\/li>\n<li><strong>Pevnos\u0165 v \u0165ahu<\/strong>: a\u017e \u2248 2 100 MPa (pod\u013ea stavu)<\/li>\n<li><strong>Hustota<\/strong>: ~7,80 g\/cm\u00b3<\/li>\n<li><strong>Kor\u00f3zia<\/strong>: obmedzen\u00e1; na ochranu pou\u017eite mazanie\/povlaky<\/li>\n<li><strong>Magnetick\u00e9<\/strong>: plne magnetick\u00e9<\/li>\n<\/ul>\n<h3>\u2705 V\u00fdhody<\/h3>\n<ul>\n<li><strong>Vysok\u00e1 r\u00e1zov\u00e1 h\u00fa\u017eevnatos\u0165<\/strong>: odolnos\u0165 vo\u010di n\u00e1razom a vibr\u00e1ci\u00e1m<\/li>\n<li><strong>Anti-spalling\/anti-brinelling<\/strong> pri extr\u00e9mnych Hertzov\u00fdch za\u0165a\u017eeniach<\/li>\n<li><strong>Odolnos\u0165 proti abr\u00e1zii<\/strong> v vrtnom kale a \u010dasticiach<\/li>\n<li><strong>Rozmerov\u00e1 stabilita<\/strong> po tepelnej \u00faprave<\/li>\n<\/ul>\n<h3>\ud83d\udd04 Aplik\u00e1cie pre Rockbit guli\u010dky (S2)<\/h3>\n<ul>\n<li><strong>Lo\u017eisk\u00e1 tri-k\u00f3nov\u00fdch vrt\u00e1kov<\/strong><\/li>\n<li><strong>Downhole n\u00e1stroje &amp; \u00faderov\u00e9 mechanizmy<\/strong><\/li>\n<li><strong>\u0164a\u017ek\u00e9 priemyseln\u00e9 lo\u017eisk\u00e1<\/strong> v abraz\u00edvnych m\u00e9di\u00e1ch<\/li>\n<\/ul>\n<h3>\ud83d\udce6 Dostupn\u00e9 triedy &amp; ve\u013ekosti<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.redhillballs.com\/company\/precision-grades\/\"><strong>Triedy<\/strong>: ISO 3290, DIN 5401, AFBMA (ekvivalentn\u00e9 tolerancie)<\/a><\/li>\n<li><strong>Rozsah priemerov<\/strong>: \u0161tandardn\u00e9 palcov\u00e9 a metrick\u00e9 ve\u013ekosti; ne\u0161tandardn\u00e9\/na mieru na po\u017eiadanie<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udee0\ufe0f Guli\u010dky z n\u00e1strojovej ocele S2 RockBit \u2013 n\u00e1razuvzdorn\u00e9 lo\u017eiskov\u00e9 prvky pre v\u0155tanie Rockbit guli\u010dky (S2) z r\u00e1zuvzdornej n\u00e1strojovej ocele s\u00fa navrhnut\u00e9 pre extr\u00e9mne kontaktn\u00e9 nap\u00e4tia, n\u00e1razy a abraziu v prostred\u00ed v\u0155tania. S\u00fa tepelne spracovan\u00e9 na vysok\u00fa tvrdos\u0165 pri zachovan\u00ed h\u00fa\u017eevnatosti a odol\u00e1vaj\u00fa odlupovaniu (spalling) a vtla\u010dovaniu (brinelling) v kalovej prev\u00e1dzke\u2014ide\u00e1lne pre tri-k\u00f3nov\u00e9 vrt\u00e1ky, downhole [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8767,"parent":1736,"menu_order":8,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1748","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>Rockbit guli\u010dky (S2) \u2013 ku\u017ee\u013eov\u00e9 vrt\u00e1ky, \u0165a\u017eba, O&amp;G, HDD<\/title>\n<meta name=\"description\" content=\"Rockbit guli\u010dky (S2) pre lo\u017eisk\u00e1 ku\u017ee\u013eov\u00fdch vrt\u00e1kov do horn\u00edn v \u0165a\u017ebe, 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