[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.protyna.cz\/zavitniky\/#Article","mainEntityOfPage":"https:\/\/www.protyna.cz\/zavitniky\/","headline":"Z\u00e1vitn\u00edky","name":"Z\u00e1vitn\u00edky","description":"Z\u00e1vitov\u00e9 spoje jsou nejb\u011b\u017en\u011bj\u0161\u00ed rozeb\u00edrateln\u00e9 spoje. Kdo by neznal \u0161roub a matici. Na vy\u0159ez\u00e1n\u00ed vnit\u0159n\u00edho z\u00e1vitu v p\u0159edvrtan\u00e9 d\u00ed\u0159e pou\u017e\u00edv\u00e1me<p><a href=\"https:\/\/www.protyna.cz\/zavitniky\/\" class=\"more-link\">P\u0159e\u010d\u00edst...<span class=\"screen-reader-text\">Z\u00e1vitn\u00edky<\/span><\/a><\/p>","datePublished":"2021-11-26","dateModified":"2023-05-31","author":{"@type":"Person","@id":"https:\/\/www.protyna.cz\/author\/#Person","name":"","url":"https:\/\/www.protyna.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c4e504508c75b610a351629e223ddd0c5b7858df84b2b7deedc4e007bdf99fc8?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c4e504508c75b610a351629e223ddd0c5b7858df84b2b7deedc4e007bdf99fc8?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"protyna.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.protyna.cz\/wp-content\/uploads\/taps-g1ee2f86ca_640.jpg","url":"https:\/\/www.protyna.cz\/wp-content\/uploads\/taps-g1ee2f86ca_640.jpg","height":0,"width":0},"url":"https:\/\/www.protyna.cz\/zavitniky\/","about":["V\u00fdrobky"],"wordCount":445,"articleBody":"   Z\u00e1vitov\u00e9 spoje jsou nejb\u011b\u017en\u011bj\u0161\u00ed rozeb\u00edrateln\u00e9 spoje. Kdo by neznal \u0161roub a matici. Na vy\u0159ez\u00e1n\u00ed vnit\u0159n\u00edho z\u00e1vitu v p\u0159edvrtan\u00e9 d\u00ed\u0159e pou\u017e\u00edv\u00e1me z\u00e1vitn\u00edky Narex. Z\u00e1vity m\u016f\u017eeme \u0159ezat ru\u010dn\u011b nebo strojn\u011b. P\u0159i ru\u010dn\u00edm \u0159ez\u00e1n\u00ed z\u00e1vit\u016f upevn\u00edme z\u00e1vitn\u00edk do vratidla. Zpravidla pou\u017e\u00edv\u00e1me sadu dvou nebo t\u0159\u00ed z\u00e1vitn\u00edk\u016f. P\u0159i pr\u016fmyslov\u00e9 v\u00fdrob\u011b b\u00fdv\u00e1 pou\u017eit\u00fd jeden z\u00e1vitn\u00edk, kter\u00fdm se vy\u0159e\u017ee rovnou hotov\u00fd z\u00e1vit bez nutnosti v\u00fdm\u011bny n\u00e1stroje.Z\u00e1vitn\u00edk m\u00e1 tvar \u0161roubu, na kter\u00e9m jsou vytvo\u0159en\u00e9 b\u0159ity pomoc\u00ed jedn\u00e9 a\u017e osmi \u0161roubovit\u00fdch nebo p\u0159\u00edm\u00fdch dr\u00e1\u017eek, kter\u00e1 tak\u00e9 slou\u017e\u00ed pro odvod vznikaj\u00edc\u00ed t\u0159\u00edsky.Z\u00e1vitn\u00edky jsou zakalen\u00e9 na vysokou tvrdost.Materi\u00e1l z\u00e1vitn\u00edk\u016f b\u00fdv\u00e1 n\u00e1strojov\u00e1 nebo rychlo\u0159ezn\u00e1 ocel. Mohou b\u00fdt i z tvrdokovu. Povrch m\u016f\u017ee b\u00fdt opat\u0159en ot\u011bruvzdorn\u00fdm povlakem.Z\u00e1vitn\u00edkem lze tak\u00e9 z\u00e1vity opravovat, nejen vytv\u00e1\u0159et nov\u00e9.P\u0159ed v\u00fdb\u011brem z\u00e1vitn\u00edku si mus\u00edme ujasnit, jak\u00fd typ z\u00e1vitu pot\u0159ebujeme vy\u0159ezat. Nejb\u011b\u017en\u011bj\u0161\u00ed z\u00e1vity jsou metrick\u00fd-zna\u010d\u00edme M, a trubkov\u00fd-zna\u010d\u00edme G nebo R. Ob\u010das naraz\u00edme i na z\u00e1vit Whitworth\u016fv, kter\u00fd je v palc\u00edch a zna\u010d\u00edme jej W. Z\u00e1vity mohou m\u00edt r\u016fzn\u00e1 stoup\u00e1n\u00ed. B\u011b\u017en\u011b se rozli\u0161uje z\u00e1vit s hrub\u00fdm nebo jemn\u00fdm stoup\u00e1n\u00edm. Tomu odpov\u00eddaj\u00ed z\u00e1vitn\u00edky s dan\u00fdm stoup\u00e1n\u00edm.Jemn\u00e9 stoup\u00e1n\u00ed se pou\u017e\u00edv\u00e1 nap\u0159. na tenkost\u011bnn\u00fdch trubk\u00e1ch, nebo v automobilov\u00e9m a leteck\u00e9m pr\u016fmyslu.D\u016fle\u017eitou ot\u00e1zkou pro spr\u00e1vn\u00fd v\u00fdb\u011br z\u00e1vitn\u00edku je n\u00e1ro\u010dnost a frekvence pou\u017eit\u00ed z\u00e1vitn\u00edku. Do profesion\u00e1ln\u00ed d\u00edlny bychom nikdy nem\u011bli na kvalitn\u00edch n\u00e1stroj\u00edch \u0161et\u0159it.Z nab\u00eddky z\u00e1vitn\u00edk\u016f Narex si vyberete dle va\u0161ich po\u017eadavk\u016f.Chceme-li \u0159ezat z\u00e1vit do nerezov\u00e9 oceli, zvol\u00edme z\u00e1vitn\u00edk z materi\u00e1lu obohacen\u00e9ho o kobalt. Je t\u0159eba po\u010d\u00edtat s vy\u0161\u0161\u00ed cenou.V neposledn\u00ed \u0159ad\u011b je t\u0159eba v\u011bd\u011bt, \u017ee existuj\u00ed nejen b\u011b\u017en\u00e9 pravoto\u010div\u00e9 z\u00e1vity, ale i levoto\u010div\u00e9 z\u00e1vity, a pro ty mus\u00ed b\u00fdt i levo\u0159ezn\u00fd z\u00e1vitn\u00edk.\u017d\u00e1dn\u00e1 d\u00edlna se neobejde bez kvalitn\u00edch n\u00e1stroj\u016f. Z\u00e1vitn\u00edky Narex v\u00e1s ur\u010dit\u011b nezklamou.                                                                                                                                                                                                                                                                                                                                                                                          3.8\/5 - (9 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Z\u00e1vitn\u00edky","item":"https:\/\/www.protyna.cz\/zavitniky\/#breadcrumbitem"}]}]