{"id":3368,"date":"2026-05-14T05:30:22","date_gmt":"2026-05-14T05:30:22","guid":{"rendered":"https:\/\/sprocket-chain.net\/?p=3368"},"modified":"2026-05-14T05:30:22","modified_gmt":"2026-05-14T05:30:22","slug":"anatomy-of-a-roller-chain-every-component-explained","status":"publish","type":"post","link":"https:\/\/sprocket-chain.net\/cs\/anatomy-of-a-roller-chain-every-component-explained\/","title":{"rendered":"Anatomie v\u00e1le\u010dkov\u00e9ho \u0159et\u011bzu: Vysv\u011btlen\u00ed v\u0161ech komponent"},"content":{"rendered":"
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Anatomie v\u00e1le\u010dkov\u00e9ho \u0159et\u011bzu: Vysv\u011btlen\u00ed v\u0161ech komponent<\/h1>\n

V\u011bt\u0161ina p\u0159ed\u010dasn\u00fdch selh\u00e1n\u00ed \u0159et\u011bzce je zp\u016fsobena jedinou chybn\u011b identifikovanou sou\u010d\u00e1st\u00ed v dob\u011b v\u00fdm\u011bny. P\u0159esn\u00e9 pochopen\u00ed toho, co ka\u017ed\u00e1 sou\u010d\u00e1stka d\u011bl\u00e1 \u2013 a pro\u010d selh\u00e1v\u00e1 \u2013 zabra\u0148uje n\u00e1kladn\u00fdm prostoj\u016fm, kter\u00fdm by se spr\u00e1vn\u00e1 specifikace dala zcela vyhnout.<\/p>\n

Po\u017e\u00e1dejte na\u0161e techniky o ov\u011b\u0159en\u00ed va\u0161\u00ed \u0159ady \u0159et\u011bz\u016f<\/a><\/p>\n<\/div>\n<\/div>\n

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\u00dadr\u017eb\u00e1\u0159 v korejsk\u00e9 cement\u00e1rn\u011b vym\u011bnil opot\u0159ebovan\u00fd v\u00e1le\u010dkov\u00fd \u0159et\u011bz<\/strong> loni s pou\u017eit\u00edm n\u011b\u010deho, co vypadalo jako identick\u00fd d\u00edl od jin\u00e9ho dodavatele. Rozte\u010d se shodovala. \u0160\u00ed\u0159ka vypadala spr\u00e1vn\u011b. O \u0161est t\u00fddn\u016f pozd\u011bji se \u0159et\u011bz nerovnom\u011brn\u011b nat\u00e1hl, zuby \u0159et\u011bzov\u00e9ho kola se za\u010daly zasek\u00e1vat a pl\u00e1novan\u00e9 dvouhodinov\u00e9 okno \u00fadr\u017eby se zm\u011bnilo ve 14hodinovou odst\u00e1vku. Hlavn\u00ed p\u0159\u00ed\u010dina byla jednoduch\u00e1: n\u00e1hradn\u00ed \u0159et\u011bz pou\u017e\u00edval jin\u00fd pr\u016fm\u011br v\u00e1lce<\/strong> \u2014 sou\u010d\u00e1st, kter\u00e1 spr\u00e1vn\u011b nesed\u011bla v ko\u0159eni zubu \u0159et\u011bzov\u00e9ho kola. D\u00edl byl rozm\u011brov\u011b bl\u00edzk\u00fd, ale neodpov\u00eddal specifikaci.<\/p>\n

K tomuto druhu chyby doch\u00e1z\u00ed \u010dast\u011bji, ne\u017e si v\u011bt\u0161ina n\u00e1kupn\u00edch t\u00fdm\u016f ochotna p\u0159ipustit, a t\u00e9m\u011b\u0159 v\u017edy pramen\u00ed z toho, \u017ee se s v\u00e1le\u010dkov\u00fdm \u0159et\u011bzem zach\u00e1z\u00ed jako s jednou zam\u011bnitelnou komoditou, a ne jako se sestavou p\u011bti odli\u0161n\u00fdch komponent, z nich\u017e ka\u017ed\u00e1 m\u00e1 svou vlastn\u00ed materi\u00e1lovou specifikaci, rozm\u011brovou toleranci a zp\u016fsob selh\u00e1n\u00ed. Jakmile pochop\u00edte, k \u010demu ka\u017ed\u00e1 komponenta skute\u010dn\u011b slou\u017e\u00ed, n\u00e1kup nespr\u00e1vn\u00fdch d\u00edl\u016f se stane mnohem obt\u00ed\u017en\u011bj\u0161\u00edm.<\/p>\n

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P\u011bt z\u00e1kladn\u00edch komponent\u016f v\u00e1le\u010dkov\u00e9ho \u0159et\u011bzu<\/h2>\n
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Ka\u017ed\u00fd standard V\u00e1le\u010dkov\u00fd \u0159et\u011bz ANSI<\/strong> \u2013 bez ohledu na velikost rozte\u010de od #25 do #240 \u2013 je vyroben ze stejn\u00fdch p\u011bti komponent\u016f sestaven\u00fdch ve stejn\u00e9m opakuj\u00edc\u00edm se vzoru. Terminologie se mezi normami ANSI B29.1 a ISO 606 m\u00edrn\u011b li\u0161\u00ed, ale fyzick\u00e9 komponenty jsou funk\u010dn\u011b identick\u00e9. Rozd\u00edl mezi kvalitn\u00edm a nestandardn\u00edm \u0159et\u011bzcem nen\u00ed v seznamu komponent\u016f, ale v rozm\u011brov\u00e9 p\u0159esnosti, jakosti materi\u00e1lu a povrchov\u00e9 \u00faprav\u011b pou\u017eit\u00e9 na ka\u017ed\u00e9 z t\u011bchto p\u011bti \u010d\u00e1st\u00ed.<\/p>\n

T\u011bchto p\u011bt sou\u010d\u00e1st\u00ed je vnit\u0159n\u00ed spojovac\u00ed deska, vn\u011bj\u0161\u00ed spojovac\u00ed deska (naz\u00fdvan\u00e1 tak\u00e9 spojovac\u00ed deska), spojovac\u00ed \u010dep, pouzdro v\u00e1le\u010dku a voln\u00e1 kladka. Ka\u017ed\u00e1 z nich m\u00e1 specifickou funkci p\u0159en\u00e1\u0161en\u00ed zat\u00ed\u017een\u00ed nebo odolnosti proti opot\u0159eben\u00ed a ka\u017ed\u00e1 z nich selh\u00e1v\u00e1 charakteristick\u00fdm zp\u016fsobem, pokud je bu\u010f specifikace nespr\u00e1vn\u00e1, nebo je nedostate\u010dn\u00e9 maz\u00e1n\u00ed.<\/p>\n<\/div>\n

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\n\n\n\n\n\n\n\n\n\n
Komponent<\/th>\nFunkce<\/th>\nTypick\u00fd materi\u00e1l<\/th>\nPrim\u00e1rn\u00ed re\u017eim selh\u00e1n\u00ed<\/th>\n<\/tr>\n<\/thead>\n
Vnit\u0159n\u00ed spojovac\u00ed deska<\/td>\nP\u0159en\u00e1\u0161\u00ed tahov\u00e9 zat\u00ed\u017een\u00ed mezi pouzdry<\/td>\nSt\u0159edn\u011b uhl\u00edkov\u00e1 ocel, HRC 38\u201345<\/td>\n\u00danavov\u00e1 trhlina na polom\u011bru otvoru pro \u010dep<\/td>\n<\/tr>\n
Vn\u011bj\u0161\u00ed spojovac\u00ed deska<\/td>\nSpojuje sousedn\u00ed \u010dl\u00e1nky pomoc\u00ed zalisovac\u00edch kol\u00edk\u016f<\/td>\nSt\u0159edn\u011b uhl\u00edkov\u00e1 ocel, \u010dern\u00fd oxid<\/td>\n\u00danavov\u00e1 trhlina v otvoru pro kol\u00edk; bo\u010dn\u00ed n\u00e1razov\u00fd lom<\/td>\n<\/tr>\n
Spojovac\u00ed kol\u00edk<\/td>\nOto\u010dn\u00fd bod mezi vnit\u0159n\u00edm a vn\u011bj\u0161\u00edm \u010dl\u00e1nkem<\/td>\nCementovan\u00e1 ocel, povrchov\u00e1 \u00faprava 55\u201360 HRC<\/td>\nOpot\u0159eben\u00ed pouzder \u010dep\u016f; torzn\u00ed smyk p\u0159i r\u00e1zov\u00e9m nam\u00e1h\u00e1n\u00ed<\/td>\n<\/tr>\n
V\u00e1le\u010dkov\u00e9 pouzdro<\/td>\nDosedac\u00ed plocha pro \u010depov\u00fd kloub<\/td>\nSp\u00e9kan\u00e1 ocel, otvor impregnovan\u00fd olejem<\/td>\nOpot\u0159eben\u00ed vnit\u0159n\u00edho otvoru (prim\u00e1rn\u00ed p\u0159\u00ed\u010dina prodlou\u017een\u00ed)<\/td>\n<\/tr>\n
Voln\u00fd v\u00e1lec<\/td>\nZab\u00edr\u00e1 s ko\u0159enem zubu \u0159et\u011bzov\u00e9ho kola s valiv\u00fdm kontaktem<\/td>\nCementa\u010dn\u00ed ocel, 55\u201362 HRC<\/td>\nOdlupov\u00e1n\u00ed povrchu; zlomen\u00ed v\u00e1lce p\u0159i r\u00e1zov\u00e9m zat\u00ed\u017een\u00ed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Jak ka\u017ed\u00e1 sou\u010d\u00e1stka nese zat\u00ed\u017een\u00ed \u2013 a pro\u010d se opot\u0159ebov\u00e1v\u00e1<\/h2>\n
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Vnit\u0159n\u00ed \u010dl\u00e1nkov\u00e1 desti\u010dka je vyra\u017eena ze za studena v\u00e1lcovan\u00e9ho p\u00e1su ze st\u0159edn\u00ed uhl\u00edkov\u00e9 oceli. Dva otvory vyra\u017een\u00e9 pro pouzdra jsou body koncentrace nap\u011bt\u00ed \u2013 p\u0159i cyklick\u00e9m tahov\u00e9m zat\u00ed\u017een\u00ed se od okraje t\u011bchto otvor\u016f \u0161\u00ed\u0159\u00ed \u00fanavov\u00e9 trhliny. Proto v\u00fdrobci kvalitn\u00edch \u0159et\u011bz\u016f pou\u017e\u00edvaj\u00ed okraje otvor\u016f s \u0159\u00edzen\u00fdm polom\u011brem a po vyra\u017een\u00ed desti\u010dky zbrokuj\u00ed: tlakov\u00e9 zbytkov\u00e9 nap\u011bt\u00ed na povrchu otvoru br\u00e1n\u00ed vzniku \u00fanavov\u00fdch trhlin.<\/p>\n

Vn\u011bj\u0161\u00ed spojovac\u00ed deska slou\u017e\u00ed konstruk\u010dn\u011b podobn\u00e9mu \u00fa\u010delu, ale je nalisov\u00e1na na spojovac\u00ed \u010depy, nikoli na pouzdra. P\u0159esah p\u0159i nalisov\u00e1n\u00ed je specifikov\u00e1n v toleranc\u00edch ANSI B29.1 \u2013 obvykle 0,010\u20130,025 mm pro standardn\u00ed velikosti rozte\u010de \u2013 a pr\u00e1v\u011b tento p\u0159esah br\u00e1n\u00ed ot\u00e1\u010den\u00ed \u010depu uvnit\u0159 vn\u011bj\u0161\u00ed desky. Pokud je nalisov\u00e1n\u00ed nedostate\u010dn\u00e9 (b\u011b\u017en\u00e1 vada kvality u n\u00edzkon\u00e1kladov\u00fdch \u0159et\u011bz\u016f), \u010dep se ot\u00e1\u010d\u00ed v otvoru vn\u011bj\u0161\u00ed desky a urychluje opot\u0159eben\u00ed obou kontaktn\u00edch ploch sou\u010dasn\u011b.<\/p>\n<\/div>\n<\/div>\n

Ten\/Ta\/To spojovac\u00ed kol\u00edk<\/strong> je nejv\u00edce tepeln\u011b zpracovanou sou\u010d\u00e1st\u00ed \u0159et\u011bzov\u00e9 sestavy. Mus\u00ed b\u00fdt dostate\u010dn\u011b tvrd\u00fd na povrchu (55\u201360 HRC), aby odolal abrazivn\u00edmu opot\u0159eben\u00ed z rotuj\u00edc\u00edho otvoru pouzdra, a z\u00e1rove\u0148 dostate\u010dn\u011b pevn\u00fd v j\u00e1dru, aby odolal torzn\u00edmu smykov\u00e9mu zat\u00ed\u017een\u00ed vyvolan\u00e9mu r\u00e1zov\u00fdm zat\u00ed\u017een\u00edm. Pro tuto aplikaci nejsou vhodn\u00e9 \u010depy s prokalen\u00edm \u2013 \u010dep s prokalen\u00edm se p\u0159i r\u00e1zov\u00e9m zat\u00ed\u017een\u00ed sp\u00ed\u0161e rozbije, ne\u017e aby energii elasticky absorboval. Cementovan\u00e9 \u010depy s hloubkou pouzdra 0,5\u20131,2 mm jsou standardn\u00edm p\u0159\u00edstupem pro \u010depy v \u0159et\u011bzech s t\u0159\u00eddou pevnosti nad #40.<\/p>\n

Ten\/Ta\/To v\u00e1le\u010dkov\u00e9 pouzdro<\/strong> je jedinou slo\u017ekou, kter\u00e1 je nejv\u00edce zodpov\u011bdn\u00e1 za to, \u010demu se b\u011b\u017en\u011b \u0159\u00edk\u00e1 \u201eprota\u017een\u00ed \u0159et\u011bzu\u201c. Tento term\u00edn je technicky zav\u00e1d\u011bj\u00edc\u00ed. Kov se neprotahuje. Ve skute\u010dnosti se d\u011bje to, \u017ee vnit\u0159n\u00ed otvor pouzdra se opot\u0159ebov\u00e1v\u00e1 o povrch \u010depu v pr\u016fb\u011bhu milion\u016f kloubov\u00fdch cykl\u016f, \u010d\u00edm\u017e se zv\u011bt\u0161uje efektivn\u00ed pr\u016fm\u011br v\u016fle mezi \u010depem a pouzdrem. Ka\u017ed\u00fd kloub \u010depu a pouzdra, kter\u00fd se opot\u0159ebuje o 0,05 mm, p\u0159id\u00e1v\u00e1 0,05 mm k efektivn\u00ed rozte\u010di dan\u00e9ho \u010dl\u00e1nku. V \u0159et\u011bzu ANSI #60 s nomin\u00e1ln\u00ed rozte\u010d\u00ed 19,05 mm se nyn\u00ed \u0159et\u011bz se 100 \u010dl\u00e1nky, kter\u00fd se opot\u0159eboval o 0,08 mm na kloub, m\u011b\u0159\u00ed, jako by m\u011bl rozte\u010d 19,13 mm \u2013 co\u017e je p\u0159esn\u011b ten stav, kter\u00fd zp\u016fsobuje, \u017ee \u0159et\u011bz jede po zubech \u0159et\u011bzov\u00e9ho kola nahoru a urychluje opot\u0159eben\u00ed zub\u016f.<\/p>\n

Protiintuitivn\u00ed realita o \u201enatahov\u00e1n\u00ed\u201c \u0159et\u011bzce:<\/strong> \u010cl\u00e1nkov\u00e9 desti\u010dky a \u010depy se p\u0159i b\u011b\u017en\u00e9m provozn\u00edm zat\u00ed\u017een\u00ed nem\u011b\u0159iteln\u011b neprotahuj\u00ed. Vn\u00edman\u00e9 prodlou\u017een\u00ed je zp\u016fsobeno v\u00fdhradn\u011b \u00fab\u011brem materi\u00e1lu na rozhran\u00ed \u010dep-pouzdro \u2013 opot\u0159eben\u00edm, nikoli deformac\u00ed. \u0158et\u011bz 3%, kter\u00fd je del\u0161\u00ed ne\u017e nomin\u00e1ln\u00ed hodnota, ztratil v ka\u017ed\u00e9m jednotliv\u00e9m spoji \u010dep-pouzdro zna\u010dn\u00e9 mno\u017estv\u00ed materi\u00e1lu. Prahov\u00e1 hodnota prodlou\u017een\u00ed \u0159et\u011bzu 3% dle ANSI B29.1 existuje proto, \u017ee za t\u00edmto bodem se rozte\u010d \u0159et\u011bzu ji\u017e neshoduje s rozte\u010dnou kru\u017enic\u00ed \u0159et\u011bzov\u00e9ho kola a \u0159et\u011bz se za\u010d\u00edn\u00e1 pohybovat po \u0161pi\u010dk\u00e1ch zub\u016f, m\u00edsto aby se dot\u00fdkal patin zub\u016f.<\/div>\n

Ten\/Ta\/To voln\u00fd v\u00e1lec<\/strong> je komponent, kter\u00fd odli\u0161uje v\u00e1le\u010dkov\u00fd \u0159et\u011bz od pouzdrov\u00e9ho \u0159et\u011bzu. Voln\u011b se ot\u00e1\u010d\u00ed na vn\u011bj\u0161\u00edm povrchu pouzdra, kdy\u017e \u0159et\u011bz zasahuje do zubu \u0159et\u011bzov\u00e9ho kola. Tento valiv\u00fd kontakt \u2013 sp\u00ed\u0161e ne\u017e kluzn\u00fd kontakt \u2013 je to, co d\u00e1v\u00e1 v\u00e1le\u010dkov\u00e9mu \u0159et\u011bzu jeho \u00fa\u010dinnost oproti prost\u00e9mu pouzdrov\u00e9mu \u0159et\u011bzu. V\u00e1le\u010dek absorbuje n\u00e1raz z\u00e1b\u011bru s ko\u0159enem zubu \u0159et\u011bzov\u00e9ho kola a rozkl\u00e1d\u00e1 kontaktn\u00ed nap\u011bt\u00ed po zak\u0159iven\u00e9m povrchu v\u00e1le\u010dku, sp\u00ed\u0161e ne\u017e aby se soust\u0159edilo v jednom bod\u011b. P\u0159i siln\u00e9m r\u00e1zov\u00e9m zat\u00ed\u017een\u00ed se v\u0161ak v\u00e1lec m\u016f\u017ee zlomit, pokud jeho povrchov\u00e1 tvrdost p\u0159ekro\u010d\u00ed lomovou hou\u017eevnatost materi\u00e1lu \u2013 dal\u0161\u00ed d\u016fvod, pro\u010d jsou specifikace hloubky pouzdra a hou\u017eevnatosti j\u00e1dra v\u00e1le\u010dk\u016f stejn\u011b d\u016fle\u017eit\u00e9 jako povrchov\u00e1 tvrdost.<\/p>\n

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ANSI vs. ISO: Jak se normy li\u0161\u00ed a pro\u010d jsou d\u016fle\u017eit\u00e9 pro nahrazen\u00ed<\/h2>\n

K nej\u010dast\u011bj\u0161\u00ed chyb\u011b substituce mezi standardy doch\u00e1z\u00ed u \u0159et\u011bz\u016f dle ANSI B29.1 a ISO 606 s ekvivalentn\u00ed rozte\u010d\u00ed. Rozm\u011bry rozte\u010de jsou definov\u00e1ny shodn\u011b \u2013 \u0159et\u011bz dle ANSI #40 a \u0159et\u011bz ISO 08A maj\u00ed oba rozte\u010d 12,70 mm. Proto se \u0159et\u011bzy v katalogu jev\u00ed jako zam\u011bniteln\u00e9. Nejsou. Pr\u016fm\u011bry v\u00e1le\u010dk\u016f se li\u0161\u00ed: ANSI #40 specifikuje v\u00e1le\u010dek o pr\u016fm\u011bru 7,92 mm, zat\u00edmco ISO 08A specifikuje v\u00e1le\u010dek o pr\u016fm\u011bru 7,95 mm. \u0160\u00ed\u0159ka vnit\u0159n\u00edho \u010dl\u00e1nku se tak\u00e9 m\u00edrn\u011b li\u0161\u00ed. Kdy\u017e \u0159et\u011bz ISO 08A b\u011b\u017e\u00ed na \u0159et\u011bzov\u00e9m kole s geometri\u00ed dle ANSI #40, v\u00e1le\u010dek nedosed\u00e1 do spr\u00e1vn\u00e9 hloubky v pat\u011b zubu a zuby \u0159et\u011bzov\u00e9ho kola se za\u010dnou asymetricky opot\u0159ebov\u00e1vat b\u011bhem n\u011bkolika set provozn\u00edch hodin.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
\u010c\u00edslo ANSI<\/th>\nEkvivalent ISO.<\/th>\nRozte\u010d (mm)<\/th>\nPr\u016fm\u011br v\u00e1le\u010dku ANSI (mm)<\/th>\nPr\u016fm\u011br v\u00e1lce ISO (mm)<\/th>\nVnit\u0159n\u00ed \u0161\u00ed\u0159ka (mm)<\/th>\nMinim\u00e1ln\u00ed mezn\u00ed zat\u00ed\u017een\u00ed ANSI (kN)<\/th>\n<\/tr>\n<\/thead>\n
#25<\/td>\n\u2014<\/td>\n6.35<\/td>\n3.30<\/td>\nNen\u00ed k dispozici<\/td>\n3.18<\/td>\n3.6<\/td>\n<\/tr>\n
#35<\/td>\n\u2014<\/td>\n9.525<\/td>\n5.08<\/td>\nNen\u00ed k dispozici<\/td>\n4.78<\/td>\n7.8<\/td>\n<\/tr>\n
#40<\/td>\n08A<\/td>\n12.70<\/td>\n7.92<\/td>\n7.95<\/td>\n7.85<\/td>\n14.1<\/td>\n<\/tr>\n
#50<\/td>\n10A<\/td>\n15.875<\/td>\n10.16<\/td>\n10.16<\/td>\n9.53<\/td>\n22.2<\/td>\n<\/tr>\n
#60<\/td>\n12A<\/td>\n19.05<\/td>\n11.91<\/td>\n11.91<\/td>\n12.57<\/td>\n31.8<\/td>\n<\/tr>\n
#80<\/td>\n16A<\/td>\n25.40<\/td>\n15.88<\/td>\n15.88<\/td>\n15.75<\/td>\n56.7<\/td>\n<\/tr>\n
#100<\/td>\n20A<\/td>\n31.75<\/td>\n19.05<\/td>\n19.05<\/td>\n18.90<\/td>\n88.5<\/td>\n<\/tr>\n
#120<\/td>\n24A<\/td>\n38.10<\/td>\n22.23<\/td>\n22.23<\/td>\n25.22<\/td>\n127.0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Praktick\u00fdm poznatkem z t\u00e9to tabulky je, \u017ee pro velikost #50 a v\u00fd\u0161e se pr\u016fm\u011bry v\u00e1le\u010dk\u016f dle ANSI a ISO sbli\u017euj\u00ed. Pod velikost\u00ed #50 jsou rozd\u00edly dostate\u010dn\u011b velk\u00e9, aby zp\u016fsobily znateln\u00e9 nesoulad. Pro velikost dle ANSI #35 (rozte\u010d 9,525 mm) neexistuje \u017e\u00e1dn\u00fd ekvivalent dle ISO \u2013 tato velikost rozte\u010de je \u010dist\u011b americk\u00fdm standardem a nahrazen\u00ed metricky bl\u00edzk\u00fdm \u0159et\u011bzem dle DIN 8187 bude m\u00edt za n\u00e1sledek okam\u017eitou nekompatibilitu \u0159et\u011bzov\u00fdch kol.<\/p>\n

<\/p>\n

Kde znalost sou\u010d\u00e1st\u00ed v\u00e1le\u010dkov\u00fdch \u0159et\u011bz\u016f p\u0159\u00edmo ovliv\u0148uje provozn\u00ed n\u00e1klady<\/h2>\n

Zem\u011bd\u011blsk\u00e9 stroje.<\/strong> Skl\u00edzec\u00ed ml\u00e1ti\u010dky, ml\u00e1ti\u010dky na r\u00fd\u017ei a pohony sil\u00e1\u017en\u00edch sil pou\u017e\u00edvaj\u00ed \u0159et\u011bzy v pra\u0161n\u00e9m a abrazivn\u00edm prost\u0159ed\u00ed, kde je obt\u00ed\u017en\u00e9 dodr\u017eovat intervaly maz\u00e1n\u00ed. V t\u011bchto podm\u00ednk\u00e1ch se otvor pouzdra opot\u0159ebov\u00e1v\u00e1 rychleji ne\u017e v jak\u00e9mkoli \u010dist\u00e9m pr\u016fmyslov\u00e9m prost\u0159ed\u00ed. Ut\u011bsn\u011bn\u00fd \u0159et\u011bz (typu O-krou\u017eek nebo X-krou\u017eek) vyu\u017e\u00edv\u00e1 elastomerov\u00e1 t\u011bsn\u011bn\u00ed v ka\u017ed\u00e9m spoji \u010depu a pouzdra k trval\u00e9mu udr\u017een\u00ed maziva nanesen\u00e9ho z v\u00fdroby \u2013 t\u011bsn\u011bn\u00ed zabra\u0148uje vniknut\u00ed abrazivn\u00edch \u010d\u00e1stic do v\u016fle mezi \u010depem a pouzdrem. Pou\u017eit\u00ed ut\u011bsn\u011bn\u00e9ho \u0159et\u011bzu pro pohony pod\u00e1vac\u00edho \u00fastroj\u00ed skl\u00edzec\u00ed ml\u00e1ti\u010dky m\u016f\u017ee prodlou\u017eit \u017eivotnost 3 a\u017e 5kr\u00e1t ve srovn\u00e1n\u00ed se standardn\u00edm otev\u0159en\u00fdm v\u00e1le\u010dkov\u00fdm \u0159et\u011bzem ve stejn\u00e9m pou\u017eit\u00ed.<\/p>\n

Dopravn\u00edkov\u00e9 a manipula\u010dn\u00ed syst\u00e9my.<\/strong> Dopravn\u00edkov\u00e9 syst\u00e9my s ploch\u00fdm vr\u0161kem a upev\u0148ovac\u00ed \u0159et\u011bzy vy\u017eaduj\u00ed, aby rozm\u011bry vn\u011bj\u0161\u00ed \u010dl\u00e1nkov\u00e9 desky byly dodr\u017eov\u00e1ny v p\u0159esn\u00fdch toleranc\u00edch, proto\u017ee upev\u0148ovac\u00ed prvky jsou p\u0159iva\u0159eny nebo p\u0159i\u0161roubov\u00e1ny p\u0159\u00edmo k vn\u011bj\u0161\u00ed desce. Pokud se tlou\u0161\u0165ka vn\u011bj\u0161\u00ed desky m\u011bn\u00ed, vyrovn\u00e1n\u00ed upev\u0148ovac\u00edch prvk\u016f se vych\u00fdl\u00ed ze specifikace a \u0159et\u011bz bo\u010dn\u011b zat\u011b\u017euje \u0159et\u011bzov\u00e9 kolo. Pro tyto aplikace, standardn\u00ed v\u00e1le\u010dkov\u00fd \u0159et\u011bz ANSI<\/a> v konfiguraci uchycen\u00ed A2 nebo K1 by m\u011bly b\u00fdt specifikov\u00e1ny s potvrzenou toleranc\u00ed tlou\u0161\u0165ky vn\u011bj\u0161\u00ed desky \u2013 nikoli pouze se\u0159azeny podle velikosti rozte\u010de.<\/p>\n

Zpracov\u00e1n\u00ed potravin a n\u00e1poj\u016f.<\/strong> U \u0159et\u011bz\u016f z nerezov\u00e9 oceli se pro \u010dl\u00e1nkov\u00e9 desti\u010dky a \u010depy pou\u017e\u00edv\u00e1 nerezov\u00e1 ocel 304 nebo 316, ale pouzdra a kladky se obvykle st\u00e1le vyr\u00e1b\u011bj\u00ed z uhl\u00edkov\u00e9 oceli, proto\u017ee nerezov\u00e1 slinut\u00e1 pouzdra nejsou \u0161iroce dostupn\u00e1. Proto nerezov\u00fd \u0159et\u011bz nen\u00ed skute\u010dn\u011b \u201ecel\u00fd nerezov\u00fd\u201c \u2013 vnit\u0159n\u00ed opot\u0159ebiteln\u00e9 sou\u010d\u00e1sti z\u016fst\u00e1vaj\u00ed z uhl\u00edkov\u00e9 oceli. Ve skute\u010dn\u011b korozivn\u00edm prost\u0159ed\u00ed s vysok\u00fdm oplachov\u00e1n\u00edm nen\u00ed \u0159e\u0161en\u00edm celonerezov\u00fd \u0159et\u011bz (kter\u00fd ve standardn\u00ed form\u011b neexistuje), ale plastov\u00e1 nap\u00ednac\u00ed kola z UHMW, kter\u00e1 zcela eliminuj\u00ed maz\u00e1n\u00ed v pozic\u00edch nap\u00ednac\u00edch kol, v kombinaci s ut\u011bsn\u011bn\u00fdm \u0159et\u011bzem s vn\u011bj\u0161\u00edm nerezov\u00fdm plechem pro hnac\u00ed pozice.<\/p>\n

T\u011b\u017eba a cement.<\/strong> \u0158et\u011bzy in\u017een\u00fdrsk\u00e9 t\u0159\u00eddy (\u0159ada 55, \u0159ada 67, \u0159ada 81X) se konstruk\u010dn\u011b li\u0161\u00ed od standardn\u00edch v\u00e1le\u010dkov\u00fdch \u0159et\u011bz\u016f \u2013 v\u00e1lec (pouzdro) je v pom\u011bru k rozte\u010di mnohem v\u011bt\u0161\u00ed, konkr\u00e9tn\u011b pro zv\u011bt\u0161en\u00ed plochy pro ulo\u017een\u00ed \u010dep\u016f a odolnost proti r\u00e1zov\u00e9mu zat\u00ed\u017een\u00ed od vle\u010dn\u00fdch dopravn\u00edk\u016f. Objedn\u00e1n\u00ed standardn\u00edho v\u00e1le\u010dkov\u00e9ho \u0159et\u011bzu ANSI jako n\u00e1hrady za \u0159et\u011bz in\u017een\u00fdrsk\u00e9 t\u0159\u00eddy v t\u011b\u017eebn\u00edm vle\u010dn\u00e9m dopravn\u00edku povede ke smykov\u00e9mu selh\u00e1n\u00ed \u010depu, obvykle b\u011bhem 200\u2013400 hodin provozu.<\/p>\n

Automatizace a balen\u00ed.<\/strong> P\u0159i ot\u00e1\u010dk\u00e1ch nad 600 ot\/min na mal\u00e9m \u0159et\u011bzov\u00e9m kole se hluk v\u00e1le\u010dk\u016f st\u00e1v\u00e1 v\u00fdznamn\u00fdm a polygonov\u00fd efekt (zm\u011bna rychlosti zp\u016fsoben\u00e1 \u00fahlov\u00fdm z\u00e1b\u011brem \u0159et\u011bzu) za\u010d\u00edn\u00e1 zp\u016fsobovat vibrace v p\u0159esn\u00fdch indexovac\u00edch syst\u00e9mech. Pro tyto aplikace je spr\u00e1vn\u00fdm in\u017een\u00fdrsk\u00fdm p\u0159\u00edstupem sn\u00ed\u017een\u00ed rozte\u010de \u0159et\u011bzu a zv\u00fd\u0161en\u00ed po\u010dtu zub\u016f na mal\u00e9m \u0159et\u011bzov\u00e9m kole \u2013 sp\u00ed\u0161e ne\u017e pou\u017eit\u00ed jednoho \u0159et\u011bzu s velkou rozte\u010d\u00ed. \u0158et\u011bz #35 s 25 zuby bude b\u011b\u017eet plynuleji a s men\u0161\u00edm zvln\u011bn\u00edm rychlosti ne\u017e \u0159et\u011bz #60 s 11 zuby, a to i v p\u0159\u00edpad\u011b, \u017ee ob\u011b konfigurace p\u0159en\u00e1\u0161ej\u00ed stejn\u00fd v\u00fdkon.<\/p>\n

\"\"<\/p>\n

Pohony s v\u00e1le\u010dkov\u00fdmi \u0159et\u011bzy v aplikac\u00edch manipulace s materi\u00e1lem a dopravn\u00edk\u016f \u2013 kde specifikace komponent\u016f \u0159et\u011bzu p\u0159\u00edmo ur\u010duj\u00ed provozuschopnost syst\u00e9mu.<\/p>\n

<\/p>\n

Jak spr\u00e1vn\u011b identifikovat v\u00e1le\u010dkov\u00fd \u0159et\u011bz k v\u00fdm\u011bn\u011b<\/h2>\n

Samotn\u00e1 rozte\u010d nesta\u010d\u00ed k ur\u010den\u00ed n\u00e1hradn\u00edho \u0159et\u011bzu. Tato t\u0159i m\u011b\u0159en\u00ed, proveden\u00e1 z opot\u0159ebovan\u00e9ho \u0159et\u011bzu pomoc\u00ed posuvn\u00e9ho m\u011b\u0159idla, jednozna\u010dn\u011b identifikuj\u00ed s\u00e9rii \u0159et\u011bzu:<\/p>\n

    \n
  1. Rozte\u010d mezi piny:<\/strong> Zm\u011b\u0159te p\u0159esn\u011b p\u0159es 10 \u010dl\u00e1nk\u016f a vyd\u011blte 10. T\u00edm se vylou\u010d\u00ed opot\u0159eben\u00ed jednotliv\u00fdch \u010dl\u00e1nk\u016f a z\u00edsk\u00e1 se p\u0159esn\u011bj\u0161\u00ed nomin\u00e1ln\u00ed rozte\u010d ne\u017e u m\u011b\u0159en\u00ed jednoho \u010dl\u00e1nku. Porovnejte s tabulkou rozte\u010de dle ANSI B29.1 nebo ISO 606.<\/li>\n
  2. Vn\u011bj\u0161\u00ed pr\u016fm\u011br v\u00e1lce (hlavn\u011b):<\/strong> Vn\u011bj\u0161\u00ed pr\u016fm\u011br v\u00e1le\u010dku zm\u011b\u0159te posuvn\u00fdm m\u011b\u0159\u00edtkem, nikoli pouzdrem. Toto je rozm\u011br, kter\u00fd odli\u0161uje normu ANSI #40 od \u200b\u200bnormy ISO 08A a zabra\u0148uje nej\u010dast\u011bj\u0161\u00ed chyb\u011b p\u0159i z\u00e1m\u011bn\u011b. Zm\u011b\u0159te v\u00edce v\u00e1le\u010dk\u016f \u2013 pokud se li\u0161\u00ed o v\u00edce ne\u017e 0,15 mm, \u0159et\u011bz je opot\u0159ebovan\u00fd nerovnom\u011brn\u011b a m\u011bl by b\u00fdt cel\u00fd vym\u011bn\u011bn, nikoli sv\u00e1z\u00e1n.<\/li>\n
  3. \u0160\u00ed\u0159ka vnit\u0159n\u00edho \u010dl\u00e1nku:<\/strong> Sv\u011btl\u00e1 vzd\u00e1lenost mezi dv\u011bma vnit\u0159n\u00edmi lamelami \u010dl\u00e1nku v polovin\u011b rozp\u011bt\u00ed. To potvrzuje spr\u00e1vnou kompatibilitu \u0161\u00ed\u0159ky \u010dela \u0159et\u011bzov\u00e9ho kola. Vnit\u0159n\u00ed \u0161\u00ed\u0159ka, kter\u00e1 je pro \u010delo \u0159et\u011bzov\u00e9ho kola p\u0159\u00edli\u0161 \u00fazk\u00e1, zp\u016fsob\u00ed, \u017ee \u0159et\u011bz bude p\u0159i ka\u017ed\u00e9m z\u00e1b\u011brov\u00e9m cyklu bo\u010dn\u011b zat\u011b\u017eovat vnit\u0159n\u00ed lamely proti zub\u016fm \u0159et\u011bzov\u00e9ho kola.<\/li>\n<\/ol>\n
    Nejdra\u017e\u0161\u00ed chyba p\u0159i v\u00fdm\u011bn\u011b \u0159et\u011bzu:<\/strong> \u0158azen\u00ed pouze podle rozte\u010de. Druh\u00e1 nejdra\u017e\u0161\u00ed mo\u017enost: v\u00fdm\u011bna pouze \u0159et\u011bzu bez kontroly \u0159et\u011bzov\u00e9ho kola. \u0158et\u011bzov\u00e9 kolo s h\u00e1\u010dkovan\u00fdmi nebo zten\u010den\u00fdmi zuby zni\u010d\u00ed nov\u00fd \u0159et\u011bz b\u011bhem 10\u201320% jeho b\u011b\u017en\u00e9 \u017eivotnosti. Ob\u011b sou\u010d\u00e1sti mus\u00ed b\u00fdt vyhodnoceny spole\u010dn\u011b \u2013 pokud n\u011bkter\u00e1 vykazuje opot\u0159eben\u00ed p\u0159esahuj\u00edc\u00ed 25% p\u016fvodn\u00ed tlou\u0161\u0165ky zubu, vym\u011b\u0148te ob\u011b sou\u010dasn\u011b.<\/div>\n

    Jakmile t\u0159i m\u011b\u0159en\u00ed potvrd\u00ed s\u00e9rii \u0159et\u011bzu, je kone\u010dn\u00fdm rozhodnut\u00edm specifikace materi\u00e1lu. Standardn\u00ed \u0159et\u011bz z uhl\u00edkov\u00e9 oceli pokr\u00fdv\u00e1 v\u011bt\u0161inu aplikac\u00ed pracuj\u00edc\u00edch pod 100 \u00b0C s pravideln\u00fdm maz\u00e1n\u00edm. Varianty v\u00e1le\u010dkov\u00fdch \u0159et\u011bz\u016f z nerezov\u00e9 nebo poniklovan\u00e9 oceli<\/a> jsou ur\u010deny pro korozivn\u00ed prost\u0159ed\u00ed, nikoli pro aplikace p\u0159i vysok\u00fdch teplot\u00e1ch \u2013 nerezov\u00e1 ocel ztr\u00e1c\u00ed v\u00fdznamnou pevnost v tahu nad 300 \u00b0C a publikovan\u00e9 hodnoty mezn\u00ed pevnosti pro nerezov\u00e9 \u0159et\u011bzy jsou obvykle o 15\u2013201 TP3T ni\u017e\u0161\u00ed ne\u017e u ekvivalent\u016f z uhl\u00edkov\u00e9 oceli se stejnou rozte\u010d\u00ed.<\/p>\n

    \"\"<\/p>\n

    <\/p>\n

    \u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
    \n
    \nJak p\u0159esn\u011b zm\u011b\u0159\u00edm prodlou\u017een\u00ed \u0159et\u011bzu, ani\u017e bych \u0159et\u011bz musel vyjmout ze stroje?<\/summary>\n
    Polo\u017ete pevn\u00e9 prav\u00edtko nebo prav\u00edtko pod\u00e9l napnut\u00e9 strany \u0159et\u011bzu a spo\u010d\u00edtejte p\u0159esn\u011b 12 rozte\u010d\u00ed (\u010dep\u016f). Zm\u011b\u0159te vzd\u00e1lenost mezi st\u0159edem \u010depu 1 a st\u0159edem \u010depu 13. U \u0159et\u011bzu ANSI #60 s jmenovitou rozte\u010d\u00ed 19,05 mm by 12 \u010dl\u00e1nk\u016f m\u011blo m\u00edt rozte\u010d 228,6 mm. Pokud nam\u011b\u0159en\u00e1 hodnota p\u0159es\u00e1hne 235,5 mm (228,6 mm x 1,03), \u0159et\u011bz dos\u00e1hl prodlou\u017een\u00ed 3% a mus\u00ed b\u00fdt vym\u011bn\u011bn. Tato metoda funguje spolehliv\u011b i s nainstalovan\u00fdm \u0159et\u011bzem, za p\u0159edpokladu, \u017ee m\u011b\u0159\u00edte na stran\u011b nap\u011bt\u00ed mezi dv\u011bma pevn\u00fdmi referen\u010dn\u00edmi body.<\/div>\n<\/details>\n
    \nMohu pou\u017e\u00edt \u0159et\u011bz ISO 08B na \u0159et\u011bzov\u00e9m kole ur\u010den\u00e9m pro ANSI #40?<\/summary>\n
    Nespolehliv\u011b. Oba maj\u00ed rozte\u010d 12,70 mm, ale \u0159et\u011bz BS\/ISO 08B m\u00e1 pr\u016fm\u011br v\u00e1le\u010dk\u016f 8,51 mm oproti 7,92 mm pro ANSI #40. \u0160ir\u0161\u00ed v\u00e1le\u010dek ISO nebude spr\u00e1vn\u011b le\u017eet v pat\u011b zubu \u0159et\u011bzov\u00e9ho kola s profilem ANSI \u2013 bude se pohybovat vysoko na zubech a b\u011bhem n\u011bkolika set hodin za\u010dne erodovat geometrii \u0161pi\u010dky zubu. Li\u0161\u00ed se tak\u00e9 \u0161\u00ed\u0159ka vnit\u0159n\u00edho \u010dl\u00e1nku (7,75 mm pro ISO 08B oproti 7,85 mm pro ANSI #40), co\u017e ovliv\u0148uje bo\u010dn\u00ed usazen\u00ed \u0159et\u011bzu na \u010deln\u00ed plo\u0161e \u0159et\u011bzov\u00e9ho kola. P\u0159i k\u0159\u00ed\u017eov\u00e9m porovn\u00e1v\u00e1n\u00ed norem v\u017edy ov\u011b\u0159te pr\u016fm\u011br v\u00e1le\u010dk\u016f i vnit\u0159n\u00ed \u0161\u00ed\u0159ku.<\/div>\n<\/details>\n
    \nCo zp\u016fsobuje prask\u00e1n\u00ed vnit\u0159n\u00edch \u010dl\u00e1nkov\u00fdch desek a je to probl\u00e9m s kvalitou \u0159et\u011bzu nebo s jeho pou\u017eit\u00edm?<\/summary>\n
    Prask\u00e1n\u00ed vnit\u0159n\u00ed lamely \u010dl\u00e1nku v m\u00edst\u011b otvoru pro \u010dep je t\u00e9m\u011b\u0159 v\u017edy \u00fanavovou poruchou a m\u016f\u017ee b\u00fdt d\u016fsledkem bu\u010f nedostate\u010dn\u00e9 kvality \u0159et\u011bzu, nebo p\u0159et\u00ed\u017een\u00ed v d\u016fsledku aplikace \u2013 nebo oboj\u00edho. Mezi p\u0159\u00ed\u010diny souvisej\u00edc\u00ed s kvalitou pat\u0159\u00ed nedostate\u010dn\u00fd polom\u011br okraje otvoru (co\u017e zanech\u00e1v\u00e1 ostr\u00fd zvy\u0161ova\u010d nap\u011bt\u00ed), nedostate\u010dn\u00e9 kuli\u010dkov\u00e1n\u00ed nebo nespr\u00e1vn\u00e1 tvrdost lamely. Mezi p\u0159\u00ed\u010diny souvisej\u00edc\u00ed s aplikac\u00ed pat\u0159\u00ed provozn\u00ed zat\u00ed\u017een\u00ed p\u0159ekra\u010duj\u00edc\u00ed 25% minim\u00e1ln\u00ed pevnosti v tahu \u0159et\u011bzu na nep\u0159etr\u017eit\u00e9 b\u00e1zi, cyklick\u00e9 r\u00e1zov\u00e9 zat\u00ed\u017een\u00ed s pom\u011brem \u0161pi\u010dky k pr\u016fm\u011bru nad 3:1 nebo \u0159et\u011bz b\u011b\u017e\u00edc\u00ed p\u0159es \u0159et\u011bzov\u00e9 kolo s m\u00e9n\u011b ne\u017e 11 zuby (polygonov\u00fd efekt dramaticky zvy\u0161uje \u0161pi\u010dkov\u00e9 zat\u00ed\u017een\u00ed zub\u016f p\u0159i n\u00edzk\u00e9m po\u010dtu zub\u016f). Prozkoumejte lomov\u00fd povrch: trhlina, kter\u00e1 za\u010d\u00edn\u00e1 na povrchu lamely a \u0161\u00ed\u0159\u00ed se dovnit\u0159, nazna\u010duje \u00fanavu z cyklick\u00e9ho p\u0159et\u00ed\u017een\u00ed; trhlina, kter\u00e1 za\u010d\u00edn\u00e1 uvnit\u0159, nazna\u010duje nedostatek materi\u00e1lu.<\/div>\n<\/details>\n
    \nExistuje n\u011bjak\u00fd smyslupln\u00fd rozd\u00edl mezi \u0159et\u011bzem se slinut\u00fdmi pouzdry a \u0159et\u011bzem s pln\u00fdmi pouzdry?<\/summary>\n
    Ano, a v prost\u0159ed\u00ed s n\u00edzk\u00fdm obsahem maziva na tom z\u00e1le\u017e\u00ed. Pouzdra ze slinut\u00e9 oceli se vyr\u00e1b\u011bj\u00ed pr\u00e1\u0161kovou metalurgi\u00ed a b\u011bhem procesu sp\u00e9k\u00e1n\u00ed jsou impregnov\u00e1na olejem. Tato olejov\u00e1 n\u00e1dr\u017eka zaji\u0161\u0165uje maz\u00e1n\u00ed na rozhran\u00ed \u010depu a pouzdra b\u011bhem po\u010d\u00e1te\u010dn\u00edho z\u00e1b\u011bhu a b\u011bhem kr\u00e1tk\u00fdch v\u00fdpadk\u016f maz\u00e1n\u00ed. Pouzdra obr\u00e1b\u011bn\u00e1 v pln\u00e9m rozsahu (pou\u017e\u00edvan\u00e1 v n\u011bkter\u00fdch vysoce odoln\u00fdch a stroj\u00edrensk\u00fdch \u0159et\u011bzech) takovou olejovou n\u00e1dr\u017eku nemaj\u00ed \u2013 spol\u00e9haj\u00ed se v\u00fdhradn\u011b na extern\u011b aplikovan\u00e9 maz\u00e1n\u00ed. V zem\u011bd\u011blsk\u00fdch aplikac\u00edch, kde jsou intervaly maz\u00e1n\u00ed nepravideln\u00e9, \u0159et\u011bz se slinut\u00fdm pouzdrem obvykle vydr\u017e\u00ed podstatn\u011b d\u00e9le ne\u017e ekvivalent s pln\u00fdm pouzdrem za stejn\u00fdch podm\u00ednek nedostatku maziva.<\/div>\n<\/details>\n
    \nJak dlouho vydr\u017e\u00ed spr\u00e1vn\u011b specifikovan\u00fd a promazan\u00fd v\u00e1le\u010dkov\u00fd \u0159et\u011bz?<\/summary>\n
    Konstruk\u010dn\u00ed pokyny ANSI B29.1 p\u0159edpokl\u00e1daj\u00ed p\u0159ibli\u017en\u011b 15 000 hodin \u017eivotnosti spr\u00e1vn\u011b dimenzovan\u00e9ho \u0159et\u011bzu pracuj\u00edc\u00edho s minim\u00e1ln\u00edm mezi pevnostn\u00edm zat\u00ed\u017een\u00edm 11 TP3T s pravideln\u00fdm kapkov\u00fdm maz\u00e1n\u00edm. V praxi nejd\u016fle\u017eit\u011bj\u0161\u00ed prom\u011bnnou nen\u00ed zat\u00ed\u017een\u00ed, ale maz\u00e1n\u00ed. \u0158et\u011bz pracuj\u00edc\u00ed s mezi pevnost\u00ed 81 TP3T s kontinu\u00e1ln\u00edm maz\u00e1n\u00edm v olejov\u00e9 l\u00e1zni obvykle vydr\u017e\u00ed d\u00e9le ne\u017e \u0159et\u011bz pracuj\u00edc\u00ed s mezi pevnost\u00ed 51 TP3T s m\u011bs\u00ed\u010dn\u00edm ru\u010dn\u00edm maz\u00e1n\u00edm ve zne\u010di\u0161t\u011bn\u00e9m prost\u0159ed\u00ed. Krit\u00e9rium v\u00fdm\u011bny z d\u016fvodu prodlou\u017een\u00ed 31 TP3T plat\u00ed bez ohledu na mechanismus \u2013 jakmile se rozte\u010d \u0159et\u011bzu posune o 31 TP3T, vym\u011b\u0148te jej spolu s ve\u0161ker\u00fdmi ozuben\u00fdmi koly, kter\u00e1 proti n\u011bmu b\u011b\u017eela v\u00edce ne\u017e polovinu \u017eivotnosti \u0159et\u011bzu.<\/div>\n<\/details>\n
    \nCo znamen\u00e1 p\u0159\u00edpona \u201eH\u201c v ozna\u010den\u00ed \u0159et\u011bz\u016f, jako je ANSI #80H?<\/summary>\n
    P\u0159\u00edpona H ozna\u010duje t\u011b\u017ek\u00fd \u0159adov\u00fd \u0159et\u011bz \u2013 rozte\u010d je shodn\u00e1 se standardn\u00edm \u0159et\u011bzem, ale \u010dl\u00e1nkov\u00e9 desti\u010dky jsou siln\u011bj\u0161\u00ed a pr\u016fm\u011br \u010depu je v\u011bt\u0161\u00ed, co\u017e m\u00e1 za n\u00e1sledek vy\u0161\u0161\u00ed minim\u00e1ln\u00ed mezn\u00ed zat\u00ed\u017een\u00ed a v\u011bt\u0161\u00ed odolnost proti \u00fanav\u011b. Norma ANSI #80H m\u00e1 stejnou rozte\u010d 25,40 mm jako standardn\u00ed #80, ale minim\u00e1ln\u00ed mezn\u00ed zat\u00ed\u017een\u00ed 68,0 kN oproti 56,7 kN u standardn\u00edho #80. T\u011b\u017ek\u00fd \u0159adov\u00fd \u0159et\u011bz pou\u017e\u00edv\u00e1 standardn\u00ed ozuben\u00e1 kola #80, proto\u017ee rozte\u010d a rozm\u011bry v\u00e1le\u010dk\u016f z\u016fst\u00e1vaj\u00ed nezm\u011bn\u011bny \u2013 li\u0161\u00ed se pouze rozm\u011bry pr\u016f\u0159ezu desti\u010dky a \u010depu. Nejd\u016fle\u017eit\u011bj\u0161\u00ed rozd\u00edl: t\u011b\u017ek\u00fd \u0159adov\u00fd \u0159et\u011bz se nezam\u011bn\u00ed s dvourozte\u010dn\u00fdm \u0159et\u011bzem stejn\u00e9ho \u010d\u00edsla; dvourozte\u010dn\u00fd \u0159et\u011bz m\u00e1 dvojn\u00e1sobnou rozte\u010d \u010dl\u00e1nk\u016f se stejn\u00fdm pr\u016fm\u011brem v\u00e1le\u010dk\u016f a je ur\u010den pro pomal\u00e9 dopravn\u00edky, nikoli pro pohony s vysok\u00fdm zat\u00ed\u017een\u00edm.<\/div>\n<\/details>\n<\/div>\n

    <\/p>\n

    \n

    Pot\u0159ebujete ten spr\u00e1vn\u00fd v\u00e1le\u010dkov\u00fd \u0159et\u011bz pro va\u0161i aplikaci?<\/h2>\n

    Identifikace p\u0159esn\u00e9 \u0159ady \u0159et\u011bzu podle rozte\u010de, pr\u016fm\u011bru v\u00e1le\u010dk\u016f a vnit\u0159n\u00ed \u0161\u00ed\u0159ky p\u0159ed objedn\u00e1n\u00edm zabra\u0148uje chyb\u00e1m ve specifikaci, kter\u00e9 zp\u016fsobuj\u00ed p\u0159ed\u010dasn\u00e9 selh\u00e1n\u00ed. Na\u0161i technici ov\u011b\u0159\u00ed va\u0161i \u0159adu \u0159et\u011bzu a zkontroluj\u00ed dostupnost skladem p\u0159ed zad\u00e1n\u00edm jak\u00e9koli objedn\u00e1vky.<\/p>\n

    Prohl\u00e9dn\u011bte si na\u0161i nab\u00eddku v\u00e1le\u010dkov\u00fdch \u0159et\u011bz\u016f<\/a>
    \n    Kontaktujte na\u0161e in\u017een\u00fdry<\/a><\/div>\n<\/div>\n<\/div>\n

    St\u0159iha\u010d: Cxm<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Anatomie v\u00e1le\u010dkov\u00e9ho \u0159et\u011bzu: Vysv\u011btlen\u00ed ka\u017ed\u00e9 sou\u010d\u00e1sti V\u011bt\u0161ina p\u0159ed\u010dasn\u00fdch selh\u00e1n\u00ed \u0159et\u011bzu je zp\u016fsobena jedinou chybn\u011b identifikovanou sou\u010d\u00e1st\u00ed v dob\u011b v\u00fdm\u011bny. P\u0159esn\u00e9 pochopen\u00ed toho, co ka\u017ed\u00e1 sou\u010d\u00e1stka d\u011bl\u00e1 \u2013 a pro\u010d selh\u00e1v\u00e1 \u2013 zabra\u0148uje n\u00e1kladn\u00fdm prostoj\u016fm, kter\u00fdm by se spr\u00e1vn\u00e1 specifikace zcela vyhnula. Po\u017e\u00e1dejte na\u0161e techniky o potvrzen\u00ed [\u2026]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[6634],"tags":[72,78,58],"class_list":["post-3368","post","type-post","status-publish","format-standard","hentry","category-chain-sprocket","tag-chain","tag-chain-sprocket","tag-sprocket"],"_links":{"self":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/posts\/3368","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/comments?post=3368"}],"version-history":[{"count":2,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/posts\/3368\/revisions"}],"predecessor-version":[{"id":3370,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/posts\/3368\/revisions\/3370"}],"wp:attachment":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/media?parent=3368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/categories?post=3368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/tags?post=3368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}