{"id":1446,"date":"2026-02-03T14:22:59","date_gmt":"2026-02-03T14:22:59","guid":{"rendered":"https:\/\/www.wonzh.com\/?post_type=product&#038;p=1446"},"modified":"2026-02-04T15:05:01","modified_gmt":"2026-02-04T15:05:01","slug":"high-performance-hydraulic-seals-for-cylinders-and-fluid-power-systems","status":"publish","type":"product","link":"https:\/\/www.wonzh.com\/pl\/product\/high-performance-hydraulic-seals-for-cylinders-and-fluid-power-systems\/","title":{"rendered":"Wysokowydajne uszczelnienia hydrauliczne do cylindr\u00f3w i uk\u0142ad\u00f3w zasilania p\u0142ynami"},"content":{"rendered":"<p data-start=\"555\" data-end=\"914\">Uszczelnienia hydrauliczne dostarczane przez Wonzh to precyzyjnie zaprojektowane elementy uszczelniaj\u0105ce zaprojektowane w celu zapobiegania wyciekom p\u0142ynu i utrzymania stabilno\u015bci ci\u015bnienia w cylindrach hydraulicznych, pompach i systemach zasilania p\u0142ynami. Uszczelnienia te odgrywaj\u0105 kluczow\u0105 rol\u0119 w zapewnieniu p\u0142ynnego ruchu t\u0142oka, zapobieganiu wewn\u0119trznym wyciekom i ochronie uk\u0142ad\u00f3w hydraulicznych przed zanieczyszczeniem i zu\u017cyciem.<\/p>\n<p data-start=\"916\" data-end=\"1340\">Wykonane z zaawansowanych elastomer\u00f3w i materia\u0142\u00f3w polimerowych, takich jak PU (poliuretan), NBR, FKM, PTFE i PTFE, uszczelnienia hydrauliczne Wonzh zapewniaj\u0105 doskona\u0142\u0105 odporno\u015b\u0107 na \u015bcieranie, niskie tarcie i trwa\u0142o\u015b\u0107 pod wysokim ci\u015bnieniem. Precyzyjne formowanie, obr\u00f3bka CNC i \u015bcis\u0142a kontrola jako\u015bci zapewniaj\u0105 dok\u0142adno\u015b\u0107 wymiarow\u0105, niezawodne uszczelnienie i wyd\u0142u\u017con\u0105 \u017cywotno\u015b\u0107 nawet w trudnych warunkach pracy.<\/p>\n<p data-start=\"1342\" data-end=\"1686\">Jako do\u015bwiadczony dostawca uszczelnie\u0144 przemys\u0142owych, Wonzh zapewnia standardowe profile uszczelnie\u0144 hydraulicznych, a tak\u017ce niestandardowe rozwi\u0105zania dostosowane do wymaga\u0144 dotycz\u0105cych ci\u015bnienia, pr\u0119dko\u015bci, temperatury i kompatybilno\u015bci p\u0142yn\u00f3w. Nasz zesp\u00f3\u0142 in\u017cynier\u00f3w wspiera dob\u00f3r uszczelnie\u0144, optymalizacj\u0119 konstrukcji rowk\u00f3w i rozwi\u0105zywanie problem\u00f3w z aplikacjami, aby zmaksymalizowa\u0107 niezawodno\u015b\u0107 systemu.<\/p>\n<h2 data-start=\"1693\" data-end=\"1712\"><strong data-start=\"1696\" data-end=\"1712\">Kluczowe cechy<\/strong><\/h2>\n<ul data-start=\"1714\" data-end=\"2014\">\n<li data-start=\"1714\" data-end=\"1767\">\n<p data-start=\"1716\" data-end=\"1767\">Doskona\u0142e w\u0142a\u015bciwo\u015bci uszczelniaj\u0105ce pod wysokim ci\u015bnieniem<\/p>\n<\/li>\n<li data-start=\"1768\" data-end=\"1815\">\n<p data-start=\"1770\" data-end=\"1815\">Niskie tarcie i mniejsze zu\u017cycie energii<\/p>\n<\/li>\n<li data-start=\"1816\" data-end=\"1860\">\n<p data-start=\"1818\" data-end=\"1860\">Wysoka odporno\u015b\u0107 na \u015bcieranie i wyt\u0142aczanie<\/p>\n<\/li>\n<li data-start=\"1861\" data-end=\"1906\">\n<p data-start=\"1863\" data-end=\"1906\">Nadaje si\u0119 do dynamicznego ruchu posuwisto-zwrotnego<\/p>\n<\/li>\n<li data-start=\"1907\" data-end=\"1960\">\n<p data-start=\"1909\" data-end=\"1960\">Szeroka kompatybilno\u015b\u0107 materia\u0142owa z p\u0142ynami hydraulicznymi<\/p>\n<\/li>\n<li data-start=\"1961\" data-end=\"2014\">\n<p data-start=\"1963\" data-end=\"2014\">Niestandardowe projekty dost\u0119pne dla specjalnych zastosowa\u0144<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"2021\" data-end=\"2048\"><strong data-start=\"2024\" data-end=\"2048\">Typowe zastosowania<\/strong><\/h2>\n<ul data-start=\"2050\" data-end=\"2337\">\n<li data-start=\"2050\" data-end=\"2073\">\n<p data-start=\"2052\" data-end=\"2073\">Si\u0142owniki hydrauliczne<\/p>\n<\/li>\n<li data-start=\"2074\" data-end=\"2115\">\n<p data-start=\"2076\" data-end=\"2115\">Koparki i maszyny budowlane<\/p>\n<\/li>\n<li data-start=\"2116\" data-end=\"2163\">\n<p data-start=\"2118\" data-end=\"2163\">Prasy przemys\u0142owe i urz\u0105dzenia do automatyzacji<\/p>\n<\/li>\n<li data-start=\"2164\" data-end=\"2184\">\n<p data-start=\"2166\" data-end=\"2184\">Maszyny g\u00f3rnicze<\/p>\n<\/li>\n<li data-start=\"2185\" data-end=\"2228\">\n<p data-start=\"2187\" data-end=\"2228\">W\u00f3zki wid\u0142owe i systemy transportu materia\u0142\u00f3w<\/p>\n<\/li>\n<li data-start=\"2229\" data-end=\"2255\">\n<p data-start=\"2231\" data-end=\"2255\">Sprz\u0119t rolniczy<\/p>\n<\/li>\n<li data-start=\"2256\" data-end=\"2289\">\n<p data-start=\"2258\" data-end=\"2289\">Systemy hydrauliczne do ropy i gazu<\/p>\n<\/li>\n<li data-start=\"2290\" data-end=\"2337\">\n<p data-start=\"2292\" data-end=\"2337\">Mobilne i stacjonarne agregaty hydrauliczne<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"2344\" data-end=\"2381\"><strong data-start=\"2347\" data-end=\"2381\">Dostarczane przez nas typy uszczelnie\u0144 hydraulicznych<\/strong><\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"2383\" data-end=\"2809\">\n<thead data-start=\"2383\" data-end=\"2426\">\n<tr data-start=\"2383\" data-end=\"2426\">\n<th data-start=\"2383\" data-end=\"2395\" data-col-size=\"sm\">Typ uszczelnienia<\/th>\n<th data-start=\"2395\" data-end=\"2406\" data-col-size=\"md\">Funkcja<\/th>\n<th data-start=\"2406\" data-end=\"2426\" data-col-size=\"sm\">Typowa pozycja<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"2441\" data-end=\"2809\">\n<tr data-start=\"2441\" data-end=\"2516\">\n<td data-start=\"2441\" data-end=\"2455\" data-col-size=\"sm\">Uszczelka t\u0142oka<\/td>\n<td data-start=\"2455\" data-end=\"2497\" data-col-size=\"md\">Zapobiega wewn\u0119trznym przeciekom przez t\u0142ok<\/td>\n<td data-start=\"2497\" data-end=\"2516\" data-col-size=\"sm\">Cylinder wewn\u0119trzny<\/td>\n<\/tr>\n<tr data-start=\"2517\" data-end=\"2591\">\n<td data-start=\"2517\" data-end=\"2528\" data-col-size=\"sm\">Uszczelka pr\u0119ta<\/td>\n<td data-start=\"2528\" data-end=\"2570\" data-col-size=\"md\">Zapobiega zewn\u0119trznym wyciekom z cylindra<\/td>\n<td data-start=\"2570\" data-end=\"2591\" data-col-size=\"sm\">Wyj\u015bcie t\u0142oczyska cylindra<\/td>\n<\/tr>\n<tr data-start=\"2592\" data-end=\"2662\">\n<td data-start=\"2592\" data-end=\"2605\" data-col-size=\"sm\">Uszczelka wycieraczki<\/td>\n<td data-start=\"2605\" data-end=\"2643\" data-col-size=\"md\">Blokuje kurz, brud i zanieczyszczenia<\/td>\n<td data-start=\"2643\" data-end=\"2662\" data-col-size=\"sm\">Punkt wej\u015bcia pr\u0119ta<\/td>\n<\/tr>\n<tr data-start=\"2663\" data-end=\"2728\">\n<td data-start=\"2663\" data-end=\"2676\" data-col-size=\"sm\">Pier\u015bcie\u0144 prowadz\u0105cy<\/td>\n<td data-start=\"2676\" data-end=\"2710\" data-col-size=\"md\">Zapobiega kontaktowi metal-metal<\/td>\n<td data-start=\"2710\" data-end=\"2728\" data-col-size=\"sm\">T\u0142ok i t\u0142oczysko<\/td>\n<\/tr>\n<tr data-start=\"2729\" data-end=\"2809\">\n<td data-start=\"2729\" data-end=\"2743\" data-col-size=\"sm\">Pier\u015bcie\u0144 zapasowy<\/td>\n<td data-start=\"2743\" data-end=\"2789\" data-col-size=\"md\">Zapobiega wyciskaniu uszczelnienia pod wysokim ci\u015bnieniem<\/td>\n<td data-start=\"2789\" data-end=\"2809\" data-col-size=\"sm\">Za uszczelnieniem g\u0142\u00f3wnym<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<h2 data-start=\"2816\" data-end=\"2868\"><strong data-start=\"2819\" data-end=\"2866\">Parametry techniczne (zakres reprezentatywny)<\/strong><\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"2870\" data-end=\"3388\">\n<thead data-start=\"2870\" data-end=\"2907\">\n<tr data-start=\"2870\" data-end=\"2907\">\n<th data-start=\"2870\" data-end=\"2882\" data-col-size=\"sm\">Parametr<\/th>\n<th data-start=\"2882\" data-end=\"2907\" data-col-size=\"md\">Specyfikacja \/ Zakres<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"2918\" data-end=\"3388\">\n<tr data-start=\"2918\" data-end=\"2967\">\n<td data-start=\"2918\" data-end=\"2930\" data-col-size=\"sm\">Typ uszczelnienia<\/td>\n<td data-start=\"2930\" data-end=\"2967\" data-col-size=\"md\">T\u0142ok, t\u0142oczysko, wycieraczka, prowadnica, kopia zapasowa<\/td>\n<\/tr>\n<tr data-start=\"2968\" data-end=\"3029\">\n<td data-start=\"2968\" data-end=\"2989\" data-col-size=\"sm\">Ci\u015bnienie robocze<\/td>\n<td data-start=\"2989\" data-end=\"3029\" data-col-size=\"md\">Do 40 MPa (w zale\u017cno\u015bci od zastosowania)<\/td>\n<\/tr>\n<tr data-start=\"3030\" data-end=\"3090\">\n<td data-start=\"3030\" data-end=\"3050\" data-col-size=\"sm\">Zakres temperatur<\/td>\n<td data-start=\"3050\" data-end=\"3090\" data-col-size=\"md\">-40\u00b0C do +120\u00b0C (w zale\u017cno\u015bci od materia\u0142u)<\/td>\n<\/tr>\n<tr data-start=\"3091\" data-end=\"3150\">\n<td data-start=\"3091\" data-end=\"3107\" data-col-size=\"sm\">Pr\u0119dko\u015b\u0107 przesuwu<\/td>\n<td data-start=\"3107\" data-end=\"3150\" data-col-size=\"md\">Do 1,0 m\/s (w zale\u017cno\u015bci od konfiguracji)<\/td>\n<\/tr>\n<tr data-start=\"3151\" data-end=\"3220\">\n<td data-start=\"3151\" data-end=\"3173\" data-col-size=\"sm\">Kompatybilno\u015b\u0107 no\u015bnik\u00f3w<\/td>\n<td data-start=\"3173\" data-end=\"3220\" data-col-size=\"md\">Olej mineralny, woda-glikol, p\u0142yny syntetyczne<\/td>\n<\/tr>\n<tr data-start=\"3221\" data-end=\"3281\">\n<td data-start=\"3221\" data-end=\"3243\" data-col-size=\"sm\">Dost\u0119pne materia\u0142y<\/td>\n<td data-start=\"3243\" data-end=\"3281\" data-col-size=\"md\">PU, NBR, FKM, PTFE, kompozyt PTFE<\/td>\n<\/tr>\n<tr data-start=\"3282\" data-end=\"3339\">\n<td data-start=\"3282\" data-end=\"3308\" data-col-size=\"sm\">Chropowato\u015b\u0107 powierzchni (pr\u0119t)<\/td>\n<td data-start=\"3308\" data-end=\"3339\" data-col-size=\"md\">Zalecane Ra 0,2 - 0,4 \u03bcm<\/td>\n<\/tr>\n<tr data-start=\"3340\" data-end=\"3388\">\n<td data-start=\"3340\" data-end=\"3362\" data-col-size=\"sm\">Obs\u0142ugiwane standardy<\/td>\n<td data-start=\"3362\" data-end=\"3388\" data-col-size=\"md\">Dost\u0119pne profile ISO<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<h2 data-start=\"3395\" data-end=\"3426\"><strong data-start=\"3398\" data-end=\"3426\">Przewodnik wyboru materia\u0142\u00f3w<\/strong><\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"3428\" data-end=\"3860\">\n<thead data-start=\"3428\" data-end=\"3467\">\n<tr data-start=\"3428\" data-end=\"3467\">\n<th data-start=\"3428\" data-end=\"3439\" data-col-size=\"sm\">Materia\u0142<\/th>\n<th data-start=\"3439\" data-end=\"3453\" data-col-size=\"sm\">Typowe zastosowanie<\/th>\n<th data-start=\"3453\" data-end=\"3467\" data-col-size=\"sm\">Zalety<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"3482\" data-end=\"3860\">\n<tr data-start=\"3482\" data-end=\"3558\">\n<td data-start=\"3482\" data-end=\"3506\" data-col-size=\"sm\"><strong data-start=\"3484\" data-end=\"3505\">PU (poliuretan)<\/strong><\/td>\n<td data-start=\"3506\" data-end=\"3529\" data-col-size=\"sm\">Wytrzyma\u0142e si\u0142owniki<\/td>\n<td data-start=\"3529\" data-end=\"3558\" data-col-size=\"sm\">Doskona\u0142a odporno\u015b\u0107 na zu\u017cycie<\/td>\n<\/tr>\n<tr data-start=\"3559\" data-end=\"3632\">\n<td data-start=\"3559\" data-end=\"3569\" data-col-size=\"sm\"><strong data-start=\"3561\" data-end=\"3568\">NBR<\/strong><\/td>\n<td data-start=\"3569\" data-end=\"3593\" data-col-size=\"sm\">Og\u00f3lny olej hydrauliczny<\/td>\n<td data-start=\"3593\" data-end=\"3632\" data-col-size=\"sm\">Op\u0142acalno\u015b\u0107, dobra odporno\u015b\u0107 na olej<\/td>\n<\/tr>\n<tr data-start=\"3633\" data-end=\"3706\">\n<td data-start=\"3633\" data-end=\"3651\" data-col-size=\"sm\"><strong data-start=\"3635\" data-end=\"3650\">FKM (Viton)<\/strong><\/td>\n<td data-start=\"3651\" data-end=\"3678\" data-col-size=\"sm\">Systemy wysokotemperaturowe<\/td>\n<td data-start=\"3678\" data-end=\"3706\" data-col-size=\"sm\">Doskona\u0142a odporno\u015b\u0107 na ciep\u0142o<\/td>\n<\/tr>\n<tr data-start=\"3707\" data-end=\"3781\">\n<td data-start=\"3707\" data-end=\"3718\" data-col-size=\"sm\"><strong data-start=\"3709\" data-end=\"3717\">PTFE<\/strong><\/td>\n<td data-start=\"3718\" data-end=\"3746\" data-col-size=\"sm\">Aplikacje o niskim wsp\u00f3\u0142czynniku tarcia<\/td>\n<td data-start=\"3746\" data-end=\"3781\" data-col-size=\"sm\">Wyj\u0105tkowa odporno\u015b\u0107 chemiczna<\/td>\n<\/tr>\n<tr data-start=\"3782\" data-end=\"3860\">\n<td data-start=\"3782\" data-end=\"3803\" data-col-size=\"sm\"><strong data-start=\"3784\" data-end=\"3802\">Kompozyt PTFE<\/strong><\/td>\n<td data-start=\"3803\" data-end=\"3828\" data-col-size=\"sm\">Wysokie obci\u0105\u017cenie i du\u017ca pr\u0119dko\u015b\u0107<\/td>\n<td data-start=\"3828\" data-end=\"3860\" data-col-size=\"sm\">Bardzo niskie tarcie, d\u0142uga \u017cywotno\u015b\u0107<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<h2 data-start=\"3867\" data-end=\"3890\"><strong data-start=\"3870\" data-end=\"3890\">Dlaczego warto wybra\u0107 Wonzh<\/strong><\/h2>\n<ul data-start=\"3892\" data-end=\"4160\">\n<li data-start=\"3892\" data-end=\"3956\">\n<p data-start=\"3894\" data-end=\"3956\">\u015acis\u0142a kontrola jako\u015bci od surowca do kontroli ko\u0144cowej<\/p>\n<\/li>\n<li data-start=\"3957\" data-end=\"4008\">\n<p data-start=\"3959\" data-end=\"4008\">Szeroki zakres standardowych i niestandardowych profili uszczelnie\u0144<\/p>\n<\/li>\n<li data-start=\"4009\" data-end=\"4069\">\n<p data-start=\"4011\" data-end=\"4069\">Wsparcie in\u017cynieryjne w zakresie projektowania rowk\u00f3w i doboru uszczelnie\u0144<\/p>\n<\/li>\n<li data-start=\"4070\" data-end=\"4122\">\n<p data-start=\"4072\" data-end=\"4122\">Stabilna wydajno\u015b\u0107 w trudnych warunkach pracy<\/p>\n<\/li>\n<li data-start=\"4123\" data-end=\"4160\">\n<p data-start=\"4125\" data-end=\"4160\">Niezawodne globalne mo\u017cliwo\u015bci dostaw<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"4167\" data-end=\"4208\"><strong data-start=\"4170\" data-end=\"4206\">Cz\u0119sto zadawane pytania (FAQ)<\/strong><\/h2>\n<h3 data-start=\"4210\" data-end=\"4258\"><strong data-start=\"4214\" data-end=\"4256\">P1: Do czego s\u0142u\u017cy uszczelnienie hydrauliczne?<\/strong><\/h3>\n<p data-start=\"4259\" data-end=\"4400\">Uszczelnienie hydrauliczne zapobiega wyciekom p\u0142ynu i utrzymuje ci\u015bnienie w cylindrach i uk\u0142adach hydraulicznych, umo\u017cliwiaj\u0105c jednocze\u015bnie p\u0142ynny ruch posuwisto-zwrotny.<\/p>\n<h3 data-start=\"4402\" data-end=\"4472\"><strong data-start=\"4406\" data-end=\"4470\">P2: Jaka jest r\u00f3\u017cnica mi\u0119dzy uszczelk\u0105 t\u0142oka a uszczelk\u0105 t\u0142oczyska?<\/strong><\/h3>\n<ul data-start=\"4473\" data-end=\"4620\">\n<li data-start=\"4473\" data-end=\"4540\">\n<p data-start=\"4475\" data-end=\"4540\"><strong data-start=\"4475\" data-end=\"4491\">Uszczelka t\u0142oka:<\/strong> zapobiega wewn\u0119trznym wyciekom wewn\u0105trz cylindra.<\/p>\n<\/li>\n<li data-start=\"4541\" data-end=\"4620\">\n<p data-start=\"4543\" data-end=\"4620\"><strong data-start=\"4543\" data-end=\"4556\">Uszczelnienie t\u0142oczyska:<\/strong> zapobiega zewn\u0119trznemu wyciekowi z butli do otoczenia.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"4622\" data-end=\"4681\"><strong data-start=\"4626\" data-end=\"4679\">P3: Czy uszczelnienia hydrauliczne mog\u0105 pracowa\u0107 pod wysokim ci\u015bnieniem?<\/strong><\/h3>\n<p data-start=\"4682\" data-end=\"4785\">Tak. Przy odpowiednim doborze materia\u0142u i konstrukcji rowka, nasze uszczelki mog\u0105 dzia\u0142a\u0107 niezawodnie do <strong data-start=\"4774\" data-end=\"4784\">40 MPa<\/strong>.<\/p>\n<h3 data-start=\"4787\" data-end=\"4832\"><strong data-start=\"4791\" data-end=\"4830\">P4: Jaki materia\u0142 powinienem wybra\u0107?<\/strong><\/h3>\n<ul data-start=\"4833\" data-end=\"4960\">\n<li data-start=\"4833\" data-end=\"4865\">\n<p data-start=\"4835\" data-end=\"4865\">Do intensywnego u\u017cytkowania \u2192 <strong data-start=\"4857\" data-end=\"4863\">PU<\/strong><\/p>\n<\/li>\n<li data-start=\"4866\" data-end=\"4900\">\n<p data-start=\"4868\" data-end=\"4900\">Dla wysokiej temperatury \u2192 <strong data-start=\"4891\" data-end=\"4898\">FKM<\/strong><\/p>\n<\/li>\n<li data-start=\"4901\" data-end=\"4932\">\n<p data-start=\"4903\" data-end=\"4932\">Dla niskiego tarcia \u2192 <strong data-start=\"4922\" data-end=\"4930\">PTFE<\/strong><\/p>\n<\/li>\n<li data-start=\"4933\" data-end=\"4960\">\n<p data-start=\"4935\" data-end=\"4960\">Do u\u017cytku og\u00f3lnego \u2192 <strong data-start=\"4953\" data-end=\"4960\">NBR<\/strong><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"4962\" data-end=\"5004\"><strong data-start=\"4966\" data-end=\"5002\">P5: Czy oferujecie niestandardowe rozmiary?<\/strong><\/h3>\n<p data-start=\"5005\" data-end=\"5122\">Tak. Mo\u017cemy wyprodukowa\u0107 uszczelnienia w oparciu o dok\u0142adne wymiary cylindra, wymagania dotycz\u0105ce ci\u015bnienia, pr\u0119dko\u015bci i temperatury.<\/p>","protected":false},"excerpt":{"rendered":"<p>Uszczelki hydrauliczne dostarczane przez Wonzh to precyzyjnie zaprojektowane elementy uszczelniaj\u0105ce zaprojektowane w celu zapobiegania wyciekom p\u0142ynu i utrzymania stabilno\u015bci ci\u015bnienia w cylindrach hydraulicznych, pompach i systemach zasilania 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