{"id":2411,"date":"2026-06-26T05:17:21","date_gmt":"2026-06-26T05:17:21","guid":{"rendered":"https:\/\/helicalcutgears.top\/?p=2411"},"modified":"2026-06-26T05:17:21","modified_gmt":"2026-06-26T05:17:21","slug":"helical-gear-oil-viscosity-selection-iso-vg-ehl","status":"publish","type":"post","link":"https:\/\/helicalcutgears.top\/sk\/helical-gear-oil-viscosity-selection-iso-vg-ehl\/","title":{"rendered":"V\u00fdber viskozity oleja pre \u0161pir\u00e1lov\u00e9 prevody"},"content":{"rendered":"
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V\u00fdber viskozity oleja pre \u0161pir\u00e1lov\u00e9 prevody \u2013 trieda ISO VG, hr\u00fabka filmu EHL a teplota<\/h1>\n

V\u00fdber spr\u00e1vnej viskozity oleja pre \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> Prevodovka nie je len ot\u00e1zkou v\u00fdberu \u201e\u0161tandardnej\u201c triedy \u2013 je to v\u00fdpo\u010det, ktor\u00fd vyva\u017euje hr\u00fabku filmu EHL po\u017eadovan\u00fa pre \u0161pecifick\u00fa r\u00fdchlos\u0165 na \u010diare rozstupu a kontaktn\u00e9 nap\u00e4tie oproti visk\u00f3znym strat\u00e1m v\u00edren\u00edm a v\u00fdkonu pri studenom \u0161tarte pri minim\u00e1lnej teplote okolia. Pou\u017eitie normy ISO VG 320 tam, kde je spr\u00e1vna hodnota ISO VG 100, nie je \u201ebezpe\u010dnej\u0161ie\u201c \u2013 v\u00fdrazne zvy\u0161uje straty v\u00edren\u00edm a m\u00f4\u017ee zabr\u00e1ni\u0165 tvorbe filmu EHL pri vysok\u00fdch r\u00fdchlostiach, preto\u017ee viskozita oleja v z\u00f3ne oka kles\u00e1 menej, ako sa o\u010dak\u00e1valo. T\u00e1to pr\u00edru\u010dka poskytuje r\u00e1mec pre v\u00fdber viskozity, ktor\u00fd zabra\u0148uje nedostato\u010dn\u00e9mu mazaniu (jamkovej tvorbe) aj nadmern\u00e9mu mazaniu (straty v\u00edren\u00edm, hladovanie filmu pri vysok\u00fdch r\u00fdchlostiach).<\/p>\n

Z\u00edskajte odpor\u00fa\u010danie pre druh oleja \u2192<\/a><\/p>\n<\/div>\n<\/div>\n

Pre\u010do viskozita ur\u010duje hr\u00fabku filmu EHL<\/h2>\n

Film EHL na \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> Kontaktn\u00e1 z\u00f3na zubov vznik\u00e1 hydrodynamick\u00fdm klinov\u00fdm efektom, ke\u010f sa dva povrchy zubov zbiehaj\u00fa na strane pribl\u00ed\u017eenia k sieti. Hr\u00fabka filmu h_min sa ur\u010duje pod\u013ea Dowsonovho-Higginsonovho vzorca (zjednodu\u0161en\u00fd priamy kontakt):<\/p>\n

h_min \u221d (\u03b7\u2080 \u00d7 v_\u03a3)^0,7 \u00d7 R'^0,46 \/ (E'^0,03 \u00d7 w'^0,13)
\nkde: \u03b7\u2080 = dynamick\u00e1 viskozita pri vstupnej teplote [Pa\u00b7s]
\nv_\u03a3 = s\u00fa\u010det r\u00fdchlost\u00ed = v\u2081 + v\u2082 \u2248 2 \u00d7 v_t (s\u00fa\u010det r\u00fdchlost\u00ed valenia) [m\/s]
\nR' = ekvivalentn\u00fd polomer zakrivenia v kontakte [mm]
\nE' = ekvivalentn\u00fd modul pru\u017enosti \u2248 226 000 N\/mm\u00b2 (oce\u013e-oce\u013e)
\nw' = norm\u00e1lov\u00e9 za\u0165a\u017eenie na jednotku kontaktnej d\u013a\u017eky [N\/mm]<\/p>\n

K\u013e\u00fa\u010dov\u00fd vz\u0165ah: h_min \u221d \u03b7\u2080^0,7 a h_min \u221d v_t^0,7<\/p>\n

Zdvojn\u00e1sobenie viskozity oleja (pri rovnakej teplote): h_min sa zv\u00fd\u0161i o 2^0,7 = 1,62\u00d7
\nZdvojn\u00e1sobenie r\u00fdchlosti na \u010diare sklonu (rovnak\u00e1 viskozita): h_min sa zv\u00fd\u0161i o 2^0,7 = 1,62\u00d7<\/p>\n

\u2192 Obe p\u00e1ky maj\u00fa rovnak\u00fd v\u00fdkon 0,7 \u2013 viskozita a r\u00fdchlos\u0165 s\u00fa rovnako \u00fa\u010dinn\u00e9
\npri zvy\u0161ovan\u00ed filmu EHL. R\u00fdchlos\u0165 je v\u0161ak ur\u010den\u00e1 aplik\u00e1ciou; viskozita
\nje kon\u0161truk\u010dn\u00e1 premenn\u00e1, ktor\u00fa in\u017einier kontroluje.<\/p>\n

Pre \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong>, pomer filmu \u03bb = h_min \/ R_q mus\u00ed dosiahnu\u0165 \u2265 2,0 pre \u00fapln\u00fa ochranu EHL. Pre presn\u00e9 br\u00fasenie \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> (Ra \u2248 0,2 \u00b5m) (R_q \u2248 0,25 \u00b5m na bok), kompozitn\u00fd R_q \u2248 \u221a(0,25\u00b2 + 0,25\u00b2) = 0,35 \u00b5m, \u010do vy\u017eaduje h_min \u2265 0,70 \u00b5m pre \u03bb = 2,0. Stupe\u0148 viskozity sa vol\u00ed tak, aby sa tento film dosiahol pri skuto\u010dnej teplote sie\u0165ovej z\u00f3ny po\u010das norm\u00e1lnej prev\u00e1dzky.<\/p>\n

Vz\u0165ah medzi viskozitou a teplotou \u2013 pre\u010do je d\u00f4le\u017eit\u00e1 prev\u00e1dzkov\u00e1 teplota<\/h2>\n

Triedy ISO VG s\u00fa definovan\u00e9 pri 40 \u00b0C. \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> Sie\u0165ov\u00e1 z\u00f3na typicky pracuje pri teplote 60 \u2013 80 \u00b0C (objemov\u00e1 teplota sie\u0165ovej z\u00f3ny) a viskozita oleja pri tejto teplote je podstatne ni\u017e\u0161ia, ako nazna\u010duje nomin\u00e1lny stupe\u0148 VG. Viskozita pri prev\u00e1dzkovej teplote sa mus\u00ed vypo\u010d\u00edta\u0165 pomocou modelu viskozita-teplota (ASTM D341 alebo Waltherova rovnica):<\/p>\n

Kinematick\u00fd viskozitn\u00fd pomer (Waltherova rovnica, zjednodu\u0161en\u00e1):
\nlog log(\u03bd + 0,7) = A \u2212 B \u00d7 log(T_abs)
\nkde \u03bd = kinematick\u00e1 viskozita [mm\u00b2\/s = cSt], T_abs = teplota [K]
\nKon\u0161tanty A a B s\u00fa prisp\u00f4soben\u00e9 viskozite oleja pri dvoch zn\u00e1mych teplot\u00e1ch.<\/p>\n

Pribli\u017en\u00e1 viskozita pri prev\u00e1dzkovej teplote pre miner\u00e1lny olej (VI \u2248 100):
\nISO VG 68 pri 40 \u00b0C \u2192 pribli\u017ene 15 cSt pri 80 \u00b0C
\nISO VG 100 pri 40 \u00b0C \u2192 pribli\u017ene 20 cSt pri 80 \u00b0C
\nISO VG 150 pri 40 \u00b0C \u2192 pribli\u017ene 28 cSt pri 80 \u00b0C
\nISO VG 220 pri 40 \u00b0C \u2192 pribli\u017ene 38 cSt pri 80 \u00b0C
\nISO VG 320 pri 40 \u00b0C \u2192 pribli\u017ene 52 cSt pri 80 \u00b0C
\nISO VG 460 pri 40 \u00b0C \u2192 pribli\u017ene 70 cSt pri 80 \u00b0C
\nISO VG 680 pri 40 \u00b0C \u2192 pribli\u017ene 98 cSt pri 80 \u00b0C<\/p>\n

Syntetick\u00fd PAO (VI \u2248 150) si zachov\u00e1va pribli\u017ene o 30\u2013401 TP3T vy\u0161\u0161iu viskozitu pri 80 \u00b0C
\nako miner\u00e1lny olej rovnakej triedy ISO VG pri 40 \u00b0C \u2013 \u010do je v\u00fdznamn\u00e1 v\u00fdhoda.<\/p>\n

Be\u017en\u00e1 chyba \u0161pecifik\u00e1cie:<\/strong> \u0160pecifik\u00e1cia ISO VG 320 pre r\u00fdchlobe\u017en\u00fd \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> (v_t = 20 m\/s) \u201eBy\u0165 v bezpe\u010d\u00ed\u201c je kontraprodukt\u00edvne. Pri teplote siete 80 \u00b0C m\u00e1 miner\u00e1lny olej VG 320 kinematick\u00fa viskozitu pribli\u017ene 52 cSt \u2013 \u010do je dostato\u010dn\u00fd film EHL. Strata v\u00edren\u00edm z olejov\u00e9ho k\u00fape\u013ea je v\u0161ak pri tejto viskozite 2 \u2013 3\u00d7 vy\u0161\u0161ia ako pri VG 150. E\u0161te d\u00f4le\u017eitej\u0161ie je, \u017ee pri vysokej r\u00fdchlosti na \u010diare st\u00fapania mus\u00ed by\u0165 olej odstredivo vrhan\u00fd z bokov zubov pred vstupom do siete \u2013 ve\u013emi visk\u00f3zny olej, ktor\u00fd neodtek\u00e1 od hrotu zuba, vytv\u00e1ra lok\u00e1lny stav nedostatku oleja pri vstupe do siete, \u010d\u00edm paradoxne zni\u017euje film EHL. Spolo\u010dnos\u0165 Korea Ever-Power sa riadi tabu\u013ekou v\u00fdberu viskozity AGMA 9005, nie omylom \u201eviac je bezpe\u010dnej\u0161ie\u201c.<\/div>\n

V\u00fdber triedy ISO VG \u2013 Tabu\u013eka r\u00fdchlosti a teploty na \u010diare rozstupu<\/h2>\n

\"Prierez<\/p>\n

\u0160pir\u00e1lovit\u00fd v\u00fdstroj<\/strong> prevodovka s olejovou va\u0148ou \u2013 spr\u00e1vna trieda ISO VG mus\u00ed poskytova\u0165 dostato\u010dn\u00fa viskozitu pri prev\u00e1dzkovej teplote z\u00f3ny siete (zvy\u010dajne 60 \u2013 80 \u00b0C pre priemyseln\u00e9 prevodovky) na dosiahnutie \u03bb \u2265 2,0, pri\u010dom mus\u00ed zosta\u0165 dostato\u010dne n\u00edzka pri minim\u00e1lnej po\u010diato\u010dnej teplote okolia, aby pretekala cez filter a dosiahla sie\u0165 v priebehu prv\u00fdch 30 \u2013 60 sek\u00fand prev\u00e1dzky<\/p>\n

Nasleduj\u00faca tabu\u013eka uv\u00e1dza odpor\u00fa\u010dania pre triedy ISO VG pre cementovan\u00e9 a br\u00fasen\u00e9 materi\u00e1ly \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koles\u00e1<\/strong> (povrch zuba Ra \u2264 0,3 \u00b5m) pri teplote olejovej vane 60\u201380 \u00b0C, na z\u00e1klade AGMA 9005-F16 Tabu\u013eka 2 (priemyseln\u00e9 uzavret\u00e9 ozuben\u00e9 pohony):<\/p>\n

\n\n\n\n\n\n\n\n\n\n
R\u00fdchlos\u0165 na \u010diare rozstupu v_t<\/th>\nOdpor\u00fa\u010dan\u00e1 ISO VG (miner\u00e1lna CLP)<\/th>\nOdpor\u00fa\u010dan\u00e1 hodnota ISO VG (PAO CLP HC)<\/th>\nPozn\u00e1mky<\/th>\n<\/tr>\n<\/thead>\n
< 0,5 m\/s (ve\u013emi pomal\u00e9)<\/td>\nVG 680\u20131000<\/td>\nVG 460\u2013680<\/td>\nRe\u017eim hrani\u010dn\u00e9ho mazania; vysok\u00e1 viskozita kompenzuje nedostatok hydrodynamick\u00e9ho filmu. Pou\u017eite\u013en\u00e9 pre ozuben\u00e9 koles\u00e1 mie\u0161a\u010diek gumy a doskov\u00fdch mlynov (\u010dl\u00e1nok 64, \u010dl\u00e1nok 68).<\/td>\n<\/tr>\n
0,5\u20135 m\/s (pomal\u00fd a\u017e stredn\u00fd)<\/td>\nVG 320\u2013680<\/td>\nVG 220\u2013320<\/td>\nZmie\u0161an\u00e9 mazivo pre star\u0161ie verzie EHL. Po\u013enohospod\u00e1rske prevodovky (Art56), \u017eeriavov\u00e9 kladkostroje (Art70), v\u0161eobecn\u00e9 priemyseln\u00e9 prevodovky M10+.<\/td>\n<\/tr>\n
5\u201315 m\/s (priemyseln\u00fd \u0161tandard)<\/td>\nVG 150\u2013320<\/td>\nVG 100\u2013220<\/td>\nPln\u00e1 EHL na hornej hranici tohto rozsahu. V\u00e4\u010d\u0161ina uzavret\u00fdch priemyseln\u00fdch \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> Prevodovky patria do tejto kateg\u00f3rie.<\/td>\n<\/tr>\n
15\u201325 m\/s (r\u00fdchlo)<\/td>\nVG 68\u2013150<\/td>\nVG 68\u2013100<\/td>\nPln\u00e1 EHL sa \u013eahko dosiahne; strata v\u00edren\u00edm pri t\u00fdchto r\u00fdchlostiach prudko st\u00fapa nad VG 220. Prevodovky kompresorov (Art50), pohony ve\u013ek\u00fdch priemyseln\u00fdch ventil\u00e1torov (Art69).<\/td>\n<\/tr>\n
> 25 m\/s (vysok\u00e1 r\u00fdchlos\u0165)<\/td>\nVG 32\u2013100 (miner\u00e1lny okraj)<\/td>\nVG 32\u201375 PAO preferovan\u00fd<\/td>\nPri teplote > 40 m\/s sa v\u00fdrazne uprednost\u0148uje PAO \u2013 ni\u017e\u0161\u00ed koeficient trakcie a lep\u0161\u00ed index viskozity udr\u017eiavaj\u00fa kvalitu filmu. Reduktory EV (Art62), zvy\u0161ova\u010de ot\u00e1\u010dok turb\u00edny (Art69).<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Kateg\u00f3rie maz\u00edv pre prevody pod\u013ea normy ISO 6743-6 \u2013 Ktor\u00fd typ pre \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koles\u00e1?<\/h2>\n

Norma ISO 6743-6 klasifikuje prevodov\u00e9 maziv\u00e1 pod\u013ea ich z\u00e1kladn\u00e9ho oleja a typu pr\u00edsady. V\u00fdber spr\u00e1vnej kateg\u00f3rie je rovnako d\u00f4le\u017eit\u00fd ako v\u00fdber spr\u00e1vneho stup\u0148a ISO VG \u2013 nespr\u00e1vna kateg\u00f3ria so spr\u00e1vnou viskozitou st\u00e1le nedostato\u010dne chr\u00e1ni:<\/p>\n

\n
CLP \u2014 Miner\u00e1lny prevodov\u00fd olej EP<\/strong><\/p>\n

\u0160tandardn\u00fd miner\u00e1lny z\u00e1kladov\u00fd olej s pr\u00edsadou pre extr\u00e9mne tlaky na b\u00e1ze s\u00edry a fosforu (S\/P). Vhodn\u00fd pre v\u00e4\u010d\u0161inu priemyseln\u00fdch \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> Pohony pri v_t = 1\u201320 m\/s. Stupe\u0148 mikropittingu FVA MLS 6\u20138. Interval v\u00fdmeny: 3 000 \u2013 8 000 hod\u00edn v z\u00e1vislosti od monitorovania stavu. Najn\u00e1kladovo efekt\u00edvnej\u0161ia vo\u013eba pre \u0161tandardn\u00e9 prevodovky.<\/p>\n<\/div>\n

CLP HC \u2014 hydrokrakovan\u00fd miner\u00e1l<\/strong><\/p>\n

Hydrokrakovan\u00fd z\u00e1kladov\u00fd olej skupiny III so zlep\u0161enou oxida\u010dnou stabilitou a mierne vy\u0161\u0161\u00edm VI (\u2248 120) ako konven\u010dn\u00fd CLP. 20\u201330% dlh\u0161ia \u017eivotnos\u0165 ako CLP. Odpor\u00fa\u010dan\u00e9 pre \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> prevodovky pri vy\u0161\u0161ej okolitej teplote alebo pri pred\u013a\u017eenom servisnom intervale. Stupe\u0148 mikropittingu FVA MLS 8\u201310. Lep\u0161ia vo\u013eba pre hlavn\u00e9 prevodovky vetern\u00fdch turb\u00edn a prevodovky pre offshore zariadenia.<\/p>\n<\/div>\n

CLP PAO \u2014 Syntetick\u00fd polyalfaolef\u00edn<\/strong><\/p>\n

Syntetick\u00fd z\u00e1kladov\u00fd olej PAO skupiny IV; VI \u2248 150. Najlep\u0161\u00ed v\u00fdkon pri vysok\u00fdch r\u00fdchlostiach (ni\u017e\u0161\u00ed koeficient trakcie \u2192 vy\u0161\u0161ia \u00fa\u010dinnos\u0165), najlep\u0161\u00ed prietok pri n\u00edzkych teplot\u00e1ch, najdlh\u0161ia \u017eivotnos\u0165 (5 000 \u2013 12 000 hod\u00edn). Vhodn\u00fd pre reduktory EV, \u0161pir\u00e1lov\u00e9 pohony BFP a ak\u00e9ko\u013evek... \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> aplik\u00e1cia, kde sa energetick\u00e1 \u00fa\u010dinnos\u0165 monetizuje. Pribli\u017ene 2 \u2013 3\u00d7 drah\u0161ie na liter ako miner\u00e1lne CLP.<\/p>\n<\/div>\n

CLP PG \u2014 Polyglykol<\/strong><\/p>\n

NEODPOR\u00da\u010cA SA pre \u0161tandardn\u00e9 \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koles\u00e1.<\/strong> Polyglykolov\u00fd z\u00e1kladov\u00fd olej je vynikaj\u00faci pre z\u00e1vitovkov\u00e9 prevody (ve\u013emi n\u00edzky koeficient trakcie na kontaktoch bronz-oce\u013e), ale nap\u00e1da nitrilov\u00e9 gumov\u00e9 tesnenia a emulguje s vodou \u013eah\u0161ie ako PAO. Nieko\u013eko v\u00fdnimiek tvoria \u0161peci\u00e1lne aplik\u00e1cie so z\u00e1vitovkov\u00fdmi prevodmi.\u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> zlo\u017een\u00e9 prevodovky, kde m\u00e1 prioritu z\u00e1vitovkov\u00fd stupe\u0148, alebo pohony s nerezov\u00fdm hriade\u013eom, kde sa nepou\u017e\u00edvaj\u00fa nitrilov\u00e9 tesnenia.<\/p>\n<\/div>\n<\/div>\n

Miner\u00e1l vs. PAO \u2013 Kedy sa vylep\u0161enie oplat\u00ed?<\/h2>\n

Prechod z miner\u00e1lneho CLP na CLP PAO pre \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> Pohon prin\u00e1\u0161a tri v\u00fdhody: \u00fa\u010dinnos\u0165 (zn\u00ed\u017een\u00e9 v\u00edrenie a trenie v z\u00e1bere \u2192 ni\u017e\u0161ie n\u00e1klady na energiu), dlh\u0161iu \u017eivotnos\u0165 oleja (skr\u00e1ten\u00fd interval \u00fadr\u017eby a prestoje) a lep\u0161iu ochranu pri extr\u00e9mnych teplot\u00e1ch. \u010ci sa moderniz\u00e1cia oplat\u00ed, z\u00e1vis\u00ed od prev\u00e1dzkov\u00e9ho profilu:<\/p>\n

V\u00fdpo\u010det n\u00e1vratnosti efekt\u00edvnosti (pr\u00edklad: 75 kW) \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> pohon, CLP 220 \u2192 PAO 220):
\nZlep\u0161enie \u00fa\u010dinnosti: pribli\u017ene 0,5 \u2013 1,01 TP3T (zn\u00ed\u017eenie str\u00e1t z oka + v\u00edrenia)
\nRo\u010dn\u00e1 \u00faspora energie: 75 kW \u00d7 0,007 \u00d7 8 000 h\/rok = 4 200 kWh\/rok
\nPri cene 0,12 USD\/kWh: \u00faspora energie 504 USD\/rok na pohon<\/p>\n

N\u00e1vratnos\u0165 oleja po\u010das jeho \u017eivotnosti:
\nMiner\u00e1lny olej CLP 220: v\u00fdmena oleja ka\u017ed\u00fdch 3 000 hod\u00edn \u2192 2,7 v\u00fdmeny\/rok po\u010das 8 000 hod\u00edn\/rok
\nCLP PAO 220: v\u00fdmena oleja ka\u017ed\u00fdch 8 000 hod\u00edn \u2192 1 v\u00fdmena\/rok
\nRo\u010dn\u00e1 \u00faspora objemu oleja: 1,7 v\u00fdmeny \u00d7 objem oleja = zna\u010dn\u00e9 pre ve\u013ek\u00e9 prevodovky<\/p>\n

Bod zvratu: Cena PAO zvy\u010dajne predstavuje 2\u20133\u00d7 cenu miner\u00e1lneho CLP na liter. Pre prevodovku s objemom 100 litrov:
\nPr\u00edplatok za PAO za jedno naplnenie: 300 USD; \u00faspora energie: 504 USD\/rok \u2192 n\u00e1vratnos\u0165 < 1 rok.
\nPre pohony prev\u00e1dzkovan\u00e9 <2 000 hod\u00edn\/rok alebo s mal\u00fdm objemom oleja je miner\u00e1lny olej CLP n\u00e1kladovo efekt\u00edvnej\u0161\u00ed.<\/p>\n

Viskozita pri studenom \u0161tarte \u2013 po\u017eiadavka na minim\u00e1lnu teplotu okolia<\/h2>\n

A \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> Prevodovka sa nesmie nikdy \u0161tartova\u0165 pri plnom za\u0165a\u017een\u00ed sk\u00f4r, ako olej vyte\u010die z olejovej vane do z\u00e1beru ozuben\u00fdch kolies a lo\u017e\u00edsk. Pri ve\u013emi n\u00edzkych okolit\u00fdch teplot\u00e1ch m\u00f4\u017ee miner\u00e1lny olej s vysokou viskozitou g\u00e9lova\u0165 alebo tiec\u0165 tak pomaly, \u017ee prv\u00fdch 30 \u2013 60 sek\u00fand prev\u00e1dzky nie je dostato\u010dne mazan\u00e9. Minim\u00e1lna okolit\u00e1 teplota pre \u0161tart pri plnom za\u0165a\u017een\u00ed bez predhrievania:<\/p>\n

Bod tuhnutia a minim\u00e1lne \u0161tartovacie teploty miner\u00e1lneho prevodov\u00e9ho oleja CLP (pribli\u017en\u00e9):
\nVG 220 CLP miner\u00e1lny: bod tuhnutia \u2248 \u221215 \u00b0C; minim\u00e1lny \u0161tart pri plnom za\u0165a\u017een\u00ed \u2248 \u22125 \u00b0C
\nVG 320 CLP miner\u00e1lny: bod tuhnutia \u2248 \u221212 \u00b0C; minim\u00e1lny \u0161tart pri plnom za\u0165a\u017een\u00ed \u2248 0 \u00b0C
\nVG 680 CLP miner\u00e1lny: bod tuhnutia \u2248 \u22129 \u00b0C; minim\u00e1lny \u0161tart pri plnom za\u0165a\u017een\u00ed \u2248 +5 \u00b0C
\nVG 220 PAO: bod tuhnutia \u2248 \u221245 \u00b0C; minim\u00e1lny \u0161tart pri plnom za\u0165a\u017een\u00ed \u2248 \u221230 \u00b0C
\nVG 320 PAO: bod tuhnutia \u2248 \u221242 \u00b0C; minim\u00e1lny \u0161tart pri plnom za\u0165a\u017een\u00ed \u2248 \u221225 \u00b0C<\/p>\n

Pre prevodovky v chladnom podneb\u00ed (k\u00f3rejsk\u00e1 zima, sib\u00edrske in\u0161tal\u00e1cie, arktick\u00e9 pobre\u017en\u00e9 oblasti):
\nSyntetick\u00fd PAO je \u010dasto jedinou mo\u017enos\u0165ou viskozitn\u00e9ho stup\u0148a, ktor\u00e1 sa vyh\u00fdba po\u017eiadavk\u00e1m na ohrieva\u010d oleja.<\/p>\n

Korea Ever-Power \u2013 Odpor\u00fa\u010danie viskozity oleja s objedn\u00e1vkami prevodovky<\/h2>\n

\"V\u00fdroba<\/p>\n

Na v\u00fdpo\u010det kompozitn\u00e9ho R_q a po\u017eadovan\u00e9ho h_min pre \u03bb = 2,0 sa pou\u017e\u00edva hodnota Ra povrchu zuba ozuben\u00e9ho kolesa nameran\u00e1 spolo\u010dnos\u0165ou Korea Ever-Power (Ra \u2264 0,2 \u00b5m pre triedu DIN 5, Ra \u2264 0,4 \u00b5m pre triedu DIN 7), ktor\u00e1 priamo ur\u010duje minim\u00e1lnu triedu ISO VG potrebn\u00fa pri \u0161pecifikovanej prev\u00e1dzkovej teplote pre dan\u00fd v\u00fdrobok. \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> in\u0161tal\u00e1cia<\/p>\n

Spolo\u010dnos\u0165 Korea Ever-Power poskytuje odpor\u00fa\u010dan\u00fd stupe\u0148 ISO VG (a minim\u00e1lny v\u00fdpo\u010det \u03bb = h_min\/R_q, ktor\u00fd ho od\u00f4vod\u0148uje) s ka\u017ed\u00fdm ozuben\u00e9 koleso so \u0161pir\u00e1lov\u00fdm rezom<\/strong> objedn\u00e1vka \u2013 s pou\u017eit\u00edm skuto\u010dne nameranej hodnoty povrchu zuba Ra z v\u00fdrobn\u00e9ho ozuben\u00e9ho kolesa, nie hodnoty predpokladanej triedou. Odpor\u00fa\u010danie pre olej zah\u0155\u0148a minim\u00e1lnu po\u010diato\u010dn\u00fa teplotu okolia pre dan\u00fd druh a indikuje, \u010di je pre prev\u00e1dzku v chladnom podneb\u00ed potrebn\u00fd syntetick\u00fd olej PAO. Ako priamy v\u00fdrobca \u0161pir\u00e1lov\u00fdch ozuben\u00fdch kolies<\/a>Spolo\u010dnos\u0165 Korea Ever-Power porovn\u00e1va odpor\u00fa\u010danie viskozity oleja s r\u00fdchlos\u0165ou na \u010diare st\u00fapania ozuben\u00e9ho kolesa a v\u00fdpo\u010dtom str\u00e1t v\u00edren\u00edm \u2013 odpor\u00fa\u010da ni\u017e\u0161\u00ed stupe\u0148 viskozity, ak z\u00e1kazn\u00edk zadal zbyto\u010dne vysok\u00fa viskozitu (VG), ktor\u00e1 by zn\u00ed\u017eila \u00fa\u010dinnos\u0165 bez zlep\u0161enia pomeru \u03bb. Prezrite si sortiment \u0161pir\u00e1lov\u00fdch ozuben\u00fdch kolies<\/a>.<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
M\u00f4\u017ee prevodovka so \u0161pir\u00e1lov\u00fdm ozuben\u00fdm kolesom be\u017ea\u0165 na rovnak\u00fd druh oleja, ak sa prev\u00e1dzkov\u00e9 ot\u00e1\u010dky zmenia v\u00fdmenou motora?<\/strong><\/p>\n

Nie nevyhnutne. Ak sa motor vymen\u00ed za r\u00fdchlej\u0161\u00ed (s vy\u0161\u0161ou r\u00fdchlos\u0165ou na \u010diare rozstupu valcov), existuj\u00faci olej s vysokou viskozitou m\u00f4\u017ee sp\u00f4sobi\u0165 nadmern\u00e9 straty v\u00edren\u00edm a vysok\u00fa teplotu oleja. Ak sa motor vymen\u00ed za pomal\u0161\u00ed, p\u00f4vodn\u00e1 viskozita m\u00f4\u017ee by\u0165 pr\u00edli\u0161 n\u00edzka na vytvorenie adekv\u00e1tneho filmu EHL pri zn\u00ed\u017eenej r\u00fdchlosti na \u010diare rozstupu valcov. Ke\u010f sa r\u00fdchlos\u0165 existuj\u00faceho oleja \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> Ak sa r\u00fdchlos\u0165 prevodovky zmen\u00ed o viac ako \u00b130%, mal by sa prepo\u010d\u00edta\u0165 stupe\u0148 viskozity oleja pri nov\u00fdch prev\u00e1dzkov\u00fdch ot\u00e1\u010dkach, aby sa potvrdilo, \u017ee \u03bb zost\u00e1va nad 2,0. Spolo\u010dnos\u0165 Korea Ever-Power poskytuje tento prepo\u010det pre ak\u00e9ko\u013evek \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> pohon, ktor\u00fd pre\u0161iel zmenou r\u00fdchlosti \u2013 v\u00fdpo\u010det berie ako vstupy skuto\u010dn\u00fa geometriu ozuben\u00e9ho kolesa (modul, \u0161\u00edrku \u010dela, priemer rozstupu) a nov\u00fa r\u00fdchlos\u0165.<\/p>\n<\/div>\n

Je potrebn\u00e9 pou\u017ei\u0165 rovnak\u00fd druh oleja pre vstupn\u00fd vysokor\u00fdchlostn\u00fd hriade\u013e aj v\u00fdstupn\u00fd n\u00edzkor\u00fdchlostn\u00fd hriade\u013e vo viacstup\u0148ovej \u0161pir\u00e1lovej prevodovke?<\/strong><\/p>\n

V zdie\u013eanej j\u00edmke \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> V prevodovke (najbe\u017enej\u0161ie usporiadanie) sa v\u0161etky stupne delia o rovnak\u00fd olej \u2013 kompromisom medzi ide\u00e1lnou viskozitou pre vysokor\u00fdchlostn\u00fd prv\u00fd stupe\u0148 (ni\u017e\u0161ia VG) a ide\u00e1lnou viskozitou pre n\u00edzkor\u00fdchlostn\u00fd posledn\u00fd stupe\u0148 (vy\u0161\u0161ia VG). \u0160tandardn\u00fd pr\u00edstup spo\u010d\u00edva vo v\u00fdbere viskozity oleja pre najkritickej\u0161\u00ed stupe\u0148 (zvy\u010dajne stupe\u0148 s najvy\u0161\u0161ou r\u00fdchlos\u0165ou na \u010diare rozstupu, kde s\u00fa straty v\u00edren\u00edm najcitlivej\u0161ie na viskozitu) a akceptovan\u00ed mierne suboptim\u00e1lnej hodnoty \u03bb v pomal\u0161\u00edch stup\u0148och \u2013 ktor\u00e9 zvy\u010dajne nie s\u00fa kritick\u00e9, preto\u017ee ich ni\u017e\u0161ia r\u00fdchlos\u0165 na \u010diare rozstupu znamen\u00e1, \u017ee film EHL je u\u017e hrub\u00fd. Pri prevodovk\u00e1ch, kde pomer ot\u00e1\u010dok medzi prv\u00fdm a posledn\u00fdm stup\u0148om presahuje 10:1 (pomer v_t presahuje 10:1), sa oplat\u00ed zv\u00e1\u017ei\u0165 samostatn\u00e9 olejov\u00e9 komory pre ka\u017ed\u00fd stupe\u0148 \u2013 ka\u017ed\u00e1 s vlastn\u00fdm optimalizovan\u00fdm druhom oleja \u2013 aby sa predi\u0161lo nadmern\u00e9mu mazaniu vo vysokor\u00fdchlostnom stupni aj nedostato\u010dn\u00e9mu mazaniu v n\u00edzkor\u00fdchlostnom stupni.<\/p>\n<\/div>\n

Ovplyv\u0148uje ve\u013ekos\u0165 modulu po\u017eiadavku na viskozitu oleja pre \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso?<\/strong><\/p>\n

\u00c1no, nepriamo \u2013 prostredn\u00edctvom dvoch mechanizmov. V\u00e4\u010d\u0161\u00ed modul \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> m\u00e1 v\u00e4\u010d\u0161\u00ed ekvivalentn\u00fd kontaktn\u00fd polomer R', \u010do zvy\u0161uje h_min pri rovnakej viskozite a r\u00fdchlosti (h_min \u221d R'^0,46). To znamen\u00e1 ve\u013ek\u00fd modul \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koles\u00e1<\/strong> m\u00f4\u017ee dosiahnu\u0165 rovnak\u00fd cie\u013e \u03bb = 2,0 s ni\u017e\u0161ou viskozitou ako ozuben\u00e9 koles\u00e1 s mal\u00fdm modulom pri rovnakej r\u00fdchlosti na \u010diare rozstupu. Ozuben\u00e9 koles\u00e1 s ve\u013ek\u00fdm modulom v\u0161ak \u010dasto be\u017eia pri ni\u017e\u0161\u00edch r\u00fdchlostiach na \u010diare rozstupu \u2013 \u010do t\u00fato v\u00fdhodu \u010diasto\u010dne kompenzuje. \u010cist\u00fd efekt: pri ozuben\u00fdch koles\u00e1ch s ve\u013emi ve\u013ek\u00fdm modulom (M20+) be\u017eiacich pri n\u00edzkych r\u00fdchlostiach (0,5 \u2013 3 m\/s) sp\u00f4sobuje kombin\u00e1cia ve\u013ek\u00e9ho R' a n\u00edzkej r\u00fdchlosti, \u017ee tvorba filmu EHL je margin\u00e1lna aj pri olejoch s ve\u013emi vysokou viskozitou \u2013 a preto sa hrani\u010dn\u00e9 mazanie EP st\u00e1va kritick\u00fdm pre ozuben\u00e9 koles\u00e1 s ve\u013ek\u00fdm modulom. \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koles\u00e1<\/strong>.<\/p>\n<\/div>\n

Pre\u010do sa polyglykolov\u00fd (CLP PG) olej neodpor\u00fa\u010da pre pohony so \u0161pir\u00e1lov\u00fdmi ozuben\u00fdmi kolesami?<\/strong><\/p>\n

Polyglykolov\u00e9 oleje nie s\u00fa kompatibiln\u00e9 s tesneniami NBR pou\u017e\u00edvan\u00fdmi prakticky vo v\u0161etk\u00fdch priemyseln\u00fdch \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> prevodovky. Olej CLP PG napu\u010diava a degraduje tesnenia NBR v priebehu nieko\u013ek\u00fdch t\u00fd\u017ed\u0148ov po vystaven\u00ed sa p\u00f4sobeniu oleja, \u010do sp\u00f4sobuje \u00faniky oleja, ktor\u00e9 kontaminuj\u00fa \u017eivotn\u00e9 prostredie a ved\u00fa k nedostatku oleja v prevodovom pohone. Druh\u00fdm probl\u00e9mom je emulg\u00e1cia vody: CLP PG absorbuje vodu a vytv\u00e1ra stabiln\u00fa emulziu, ktor\u00fa je \u0165a\u017ek\u00e9 odstr\u00e1ni\u0165 oddelen\u00edm vody \u2013 emulgovan\u00e1 voda potom sp\u00f4sobuje hrdzavenie vo vn\u00fatri telesa prevodovky a na bokoch zubov prevodovky. \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong>CLP PG je spr\u00e1vne mazivo pre z\u00e1vitovkov\u00e9 prevodovky (kde je n\u00edzky koeficient trakcie PG na bronze jedine\u010dne v\u00fdhodn\u00fd) \u2013 ale pre ak\u00fdko\u013evek pohon s \u0161pir\u00e1lov\u00e9 ozuben\u00e9 koleso<\/strong> f\u00e1ze je CLP PAO preferovanou vysokov\u00fdkonnou syntetickou zlo\u017ekou, nie CLP PG.<\/p>\n<\/div>\n

\n

Odpor\u00fa\u010danie triedy ISO VG pre ka\u017ed\u00fa objedn\u00e1vku ozuben\u00e9ho kolesa so \u0161pir\u00e1lov\u00fdm ozuben\u00fdm kolesom<\/h2>\n

Spolo\u010dnos\u0165 Korea Ever-Power vypo\u010d\u00edta \u03bb = h_min \/ R_q pri nameranej r\u00fdchlosti Ra a skuto\u010dnej r\u00fdchlosti na \u010diare sklonu, potom v dokument\u00e1cii objedn\u00e1vky \u0161tandardne odpor\u00fa\u010da minim\u00e1lnu triedu ISO VG a kateg\u00f3riu oleja (CLP \/ CLP HC \/ CLP PAO) \u2013 s minim\u00e1lnou po\u010diato\u010dnou teplotou a intervalom v\u00fdmeny oleja. Nie je potrebn\u00e9 \u017eiadne samostatn\u00e9 technicky spracovanie maziva.<\/p>\n

Vy\u017eiadajte si odpor\u00fa\u010danie t\u00fdkaj\u00face sa viskozity oleja<\/a>
\nSortiment \u0161pir\u00e1lov\u00fdch ozuben\u00fdch kolies<\/a><\/div>\n

V\u00fdpo\u010det \u03bb = h_min \/ R_q \u00b7 V\u00fdber triedy ISO VG \u00b7 Odpor\u00fa\u010danie CLP \/ CLP HC \/ CLP PAO \u00b7 Teplota pri studenom \u0161tarte \u00b7 Servisn\u00fd interval \u00b7 \u0160tandardn\u00e9 zaradenie<\/p>\n<\/div>\n

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

V\u00fdber viskozity oleja pre \u0161pir\u00e1lov\u00e9 prevodovky \u2013 trieda ISO VG, hr\u00fabka filmu EHL a teplota V\u00fdber spr\u00e1vnej viskozity oleja pre \u0161pir\u00e1lov\u00fa prevodovku nie je len ot\u00e1zkou v\u00fdberu \u201e\u0161tandardnej\u201c triedy \u2013 je to v\u00fdpo\u010det, ktor\u00fd vyva\u017euje hr\u00fabku filmu EHL potrebn\u00fa pre \u0161pecifick\u00fa r\u00fdchlos\u0165 na \u010diare rozstupu a kontaktn\u00e9 nap\u00e4tie vo\u010di [\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":[3082],"tags":[],"class_list":["post-2411","post","type-post","status-publish","format-standard","hentry","category-helical-gears"],"_links":{"self":[{"href":"https:\/\/helicalcutgears.top\/sk\/wp-json\/wp\/v2\/posts\/2411","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/helicalcutgears.top\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/helicalcutgears.top\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/helicalcutgears.top\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/helicalcutgears.top\/sk\/wp-json\/wp\/v2\/comments?post=2411"}],"version-history":[{"count":2,"href":"https:\/\/helicalcutgears.top\/sk\/wp-json\/wp\/v2\/posts\/2411\/revisions"}],"predecessor-version":[{"id":2414,"href":"https:\/\/helicalcutgears.top\/sk\/wp-json\/wp\/v2\/posts\/2411\/revisions\/2414"}],"wp:attachment":[{"href":"https:\/\/helicalcutgears.top\/sk\/wp-json\/wp\/v2\/media?parent=2411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/helicalcutgears.top\/sk\/wp-json\/wp\/v2\/categories?post=2411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/helicalcutgears.top\/sk\/wp-json\/wp\/v2\/tags?post=2411"}],"curies":[{"name":"pracovn\u00fd list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}