{"id":2324,"date":"2026-06-24T02:51:42","date_gmt":"2026-06-24T02:51:42","guid":{"rendered":"https:\/\/helicalcutgears.top\/?p=2324"},"modified":"2026-06-24T02:51:42","modified_gmt":"2026-06-24T02:51:42","slug":"plastic-helical-gears-pom-peek-pa66","status":"publish","type":"post","link":"https:\/\/helicalcutgears.top\/cs\/plastic-helical-gears-pom-peek-pa66\/","title":{"rendered":"Plastov\u00e1 ozuben\u00e1 kola s spir\u00e1lov\u00fdm ozuben\u00edm \u2013 materi\u00e1ly POM, PEEK, PA66, nosnost a n\u00e1vod k pou\u017eit\u00ed"},"content":{"rendered":"
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Plastov\u00e1 ozuben\u00e1 kola s spir\u00e1lov\u00fdm ozuben\u00edm \u2013 materi\u00e1ly POM, PEEK, PA66, nosnost a n\u00e1vod k pou\u017eit\u00ed<\/h1>\n

Plastov\u00e1 spir\u00e1lov\u00e1 ozuben\u00e1 kola nejsou nekvalitn\u00ed n\u00e1hradou oceli \u2013 p\u0159edstavuj\u00ed spr\u00e1vnou technickou specifikaci pro specifick\u00e9 aplikace: z\u00f3ny styku s potravinami, kde je maz\u00e1n\u00ed olejem zak\u00e1z\u00e1no, zdravotnick\u00e9 prost\u0159edky, kter\u00e9 mus\u00ed p\u0159e\u017e\u00edt sterilizaci v autokl\u00e1vu, lehk\u00e1 kancel\u00e1\u0159sk\u00e1 a automatiza\u010dn\u00ed za\u0159\u00edzen\u00ed, kde tich\u00fd provoz a samomaz\u00e1n\u00ed jsou d\u016fle\u017eit\u011bj\u0161\u00ed ne\u017e nosnost. Tato p\u0159\u00edru\u010dka se zab\u00fdv\u00e1 v\u0161emi praktick\u00fdmi polymern\u00edmi materi\u00e1ly, jejich nosnost\u00ed, teplotn\u00edm stropem, regula\u010dn\u00edm statusem a kdy je t\u0159eba je specifikovat p\u0159ed ocel\u00ed.<\/p>\n

Specifikujte si polymerov\u00e9 spir\u00e1lov\u00e9 ozuben\u00e9 kolo \u2192<\/a><\/p>\n<\/div>\n<\/div>\n

Pro\u010d zvolit plastov\u00e9 \u0161ikm\u00e9 ozuben\u00e9 kolo? \u2014 P\u011bt technick\u00fdch d\u016fvod\u016f<\/h2>\n

V\u00fdm\u011bna oceli spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> s polymerovou verz\u00ed se nejedn\u00e1 o cenov\u00fd kompromis \u2013 v p\u011bti specifick\u00fdch situac\u00edch je to technicky lep\u0161\u00ed volba:<\/p>\n

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Nen\u00ed nutn\u00e9 maz\u00e1n\u00ed olejem<\/strong><\/p>\n

POM, PA66 a UHMWPE b\u011b\u017e\u00ed nasucho proti oceli nebo jin\u00e9mu polymeru bez oleje \u2013 povrch polymeru funguje jako vlastn\u00ed hrani\u010dn\u00ed mazivo. V z\u00f3n\u00e1ch zpracov\u00e1n\u00ed potravin, kde je migrace oleje do produktu nep\u0159ijateln\u00e1, se pou\u017e\u00edv\u00e1 POM b\u011b\u017e\u00edc\u00ed nasucho. spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> zcela eliminuje riziko kontaminace maziva.<\/p>\n<\/div>\n

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Shoda s p\u0159edpisy pro styk s potravinami<\/strong><\/p>\n

POM, UHMWPE a PEEK spl\u0148uj\u00edc\u00ed normy FDA jsou schv\u00e1leny pro p\u0159\u00edm\u00fd kontakt s potravinami podle norem FDA 21 CFR a EU 1935\/2004. Ocelov\u00e9 ozuben\u00e9 kolo v olejov\u00e9 l\u00e1zni nen\u00ed schv\u00e1leno pro p\u0159\u00edm\u00fd kontakt s potravinami, pokud olej nem\u00e1 certifikaci NSF H1 \u2013 a i tehdy mus\u00ed b\u00fdt samotn\u00e1 ocel z SS316L nebo ekvivalentn\u00ed slitiny potravin\u00e1\u0159sk\u00e9 kvality.<\/p>\n<\/div>\n

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Tich\u00fd provoz p\u0159i n\u00edzk\u00e9m zat\u00ed\u017een\u00ed<\/strong><\/p>\n

POM-na-oceli nebo POM-na-POM spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> dvojice p\u0159en\u00e1\u0161\u00ed na s\u00ed\u0165 mnohem m\u00e9n\u011b energie n\u00e1razu ne\u017e dvojice ocel na ocel p\u0159i stejn\u00e9m zat\u00ed\u017een\u00ed \u2013 proto\u017ee polymer tlum\u00ed n\u00e1raz p\u0159i kontaktu zub\u016f. D\u00edky tomu je polymer \u0161ikm\u00e1 ozuben\u00e1 kola<\/strong> standard pro kancel\u00e1\u0159sk\u00e9 vybaven\u00ed, zdravotnick\u00e9 prost\u0159edky a spot\u0159ebn\u00ed elektroniku, kde mus\u00ed b\u00fdt hluk za\u0159\u00edzen\u00ed nesly\u0161iteln\u00fd.<\/p>\n<\/div>\n

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Odolnost v\u016f\u010di korozi<\/strong><\/p>\n

V\u0161echny technick\u00e9 polymery jsou zcela imunn\u00ed v\u016f\u010di rzi, oxidaci a v\u011bt\u0161in\u011b kysel\u00fdch\/alkalick\u00fdch korozn\u00edch vliv\u016f. Ve vlhk\u00e9m, venkovn\u00edm nebo chemick\u00e9m prost\u0159ed\u00ed, kde by i SS316L korodoval pomalu, je vhodn\u00e9 pou\u017e\u00edt POM nebo PEEK. \u0161ikm\u00e1 ozuben\u00e1 kola<\/strong> nepot\u0159ebuj\u00ed \u017e\u00e1dnou povrchovou ochranu a nevy\u017eaduj\u00ed \u017e\u00e1dnou pravidelnou antikorozn\u00ed \u00fadr\u017ebu.<\/p>\n<\/div>\n<\/div>\n

Porovn\u00e1n\u00ed materi\u00e1l\u016f polymerov\u00fdch spir\u00e1lov\u00fdch ozuben\u00fdch kol<\/h2>\n

\"\u0160roubov\u00e9<\/p>\n

POM (polyacetal\/Delrin) spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> \u2014 standardn\u00ed polymern\u00ed materi\u00e1l pro ozuben\u00e1 kola pro zpracov\u00e1n\u00ed potravin, automatizaci osv\u011btlen\u00ed a aplikace v l\u00e9ka\u0159sk\u00fdch za\u0159\u00edzen\u00edch. Samomazn\u00fd, spl\u0148uje normu FDA 21 CFR 177.2470, rozm\u011brov\u011b stabiln\u00ed a p\u0159izp\u016fsobiteln\u00fd dle DIN t\u0159\u00eddy 6\u20137 p\u0159\u00edmo z extrudovan\u00e9ho p\u00edstn\u00edho materi\u00e1lu.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
Materi\u00e1l<\/th>\nMaxim\u00e1ln\u00ed trval\u00e1 teplota<\/th>\n\u03c3_H limit* (MPa)<\/th>\nSamomazn\u00e9?<\/th>\nKontakt s potravinami<\/th>\nRelativn\u00ed n\u00e1klady (oproti POM)<\/th>\nNejlep\u0161\u00ed aplikace<\/th>\n<\/tr>\n<\/thead>\n
POM (Delrin \/ Acetal)<\/td>\n90 \u00b0C trvale; 110 \u00b0C kr\u00e1tkodob\u011b<\/td>\n20\u201335<\/td>\nAno<\/td>\n\u00da\u0159ad pro kontrolu potravin a l\u00e9\u010div 21 CFR 177.2470 \u2713<\/td>\n1,0\u00d7<\/td>\nZpracov\u00e1n\u00ed potravin, automatizace osv\u011btlen\u00ed, p\u0159esn\u00e9 p\u0159\u00edstroje<\/td>\n<\/tr>\n
PA66 (Nylon 66)<\/td>\n100 \u00b0C za sucha; 80 \u00b0C za mokra<\/td>\n18\u201328<\/td>\nSt\u0159edn\u00ed (absorbuje olej)<\/td>\nT\u0159\u00eddy schv\u00e1len\u00e9 FDA \u2713<\/td>\n0,8\u00d7<\/td>\nObecn\u00e9 lehk\u00e9 proveden\u00ed; absorbuje vlhkost \u2192 zm\u011bna rozm\u011bru \u00b10,51 TP3T<\/td>\n<\/tr>\n
PA66 + 30% bez lepku<\/td>\n120 \u00b0C such\u00e9<\/td>\n30\u201345<\/td>\nNi\u017e\u0161\u00ed (sklen\u011bn\u00e1 v\u00fdpl\u0148 sni\u017euje samomaz\u00e1n\u00ed)<\/td>\nZ\u00e1le\u017e\u00ed na stupni<\/td>\n1,2\u00d7<\/td>\nVy\u0161\u0161\u00ed zat\u00ed\u017een\u00ed ne\u017e nepln\u011bn\u00fd PA66; tu\u017e\u0161\u00ed; abrazivn\u011bj\u0161\u00ed k ozuben\u00e9mu kolu<\/td>\n<\/tr>\n
UHMWPE<\/td>\n80 \u00b0C trvale<\/td>\n8\u201315<\/td>\nVynikaj\u00edc\u00ed \u2013 nejni\u017e\u0161\u00ed t\u0159en\u00ed<\/td>\nFDA 21 CFR 177.1520 \u2713; NSF 61 \u2713<\/td>\n1,1\u00d7<\/td>\nZ\u00f3ny pro mokr\u00e9 krmivo; ozuben\u00e1 kola dopravn\u00edku; pouze nejleh\u010d\u00ed z\u00e1t\u011b\u017ee<\/td>\n<\/tr>\n
PEEK (standardn\u00ed t\u0159\u00edda)<\/td>\n250 \u00b0C nep\u0159etr\u017eit\u011b<\/td>\n40\u201360<\/td>\nOmezen\u00e9 \u2013 vy\u017eaduje trochu oleje<\/td>\nVy\u017eaduje se sm\u011bs spl\u0148uj\u00edc\u00ed normu FDA; ov\u011b\u0159te<\/td>\n8\u201312\u00d7<\/td>\nVysok\u00e1 teplota; steriln\u00ed farmaceutick\u00e9 z\u00f3ny; zdravotnick\u00e9 prost\u0159edky vy\u017eaduj\u00edc\u00ed autokl\u00e1vov\u00e1n\u00ed<\/td>\n<\/tr>\n
PEEK + uhl\u00edkov\u00e9 vl\u00e1kno 30%<\/td>\n250 \u00b0C nep\u0159etr\u017eit\u011b<\/td>\n70\u201390<\/td>\nDobr\u00fd (CF p\u016fsob\u00ed jako lubrikant)<\/td>\nVy\u017eaduje se speci\u00e1ln\u00ed stupe\u0148 FDA<\/td>\n18\u201325\u00d7<\/td>\nNejv\u00fdkonn\u011bj\u0161\u00ed polymern\u00ed za\u0159\u00edzen\u00ed \u2013 chirurgick\u00e1 robotika, leteck\u00fd pr\u016fmysl, tepeln\u00e1 z\u00f3na pro elektromobily<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* \u03c3_H lim pro polymery je Hertz\u016fv limit kontaktn\u00edho tlaku p\u0159i 23 \u00b0C, 50% RH \u2013 srovnejte s 490 MPa pro ocel 45# QT. I ta nejlep\u0161\u00ed polymerov\u00e1 ozuben\u00e1 kola jsou 5\u201310\u00d7 ni\u017e\u0161\u00ed ne\u017e ta nejslab\u0161\u00ed ocelov\u00e1 ozuben\u00e1 kola.<\/p>\n

Realita nosnosti \u2013 kdy\u017e je ocel jedinou mo\u017enost\u00ed<\/h2>\n

Nejd\u016fle\u017eit\u011bj\u0161\u00ed parametr, kter\u00fd je t\u0159eba zkontrolovat p\u0159ed v\u00fdb\u011brem plastu spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> je mez kontaktn\u00edho nap\u011bt\u00ed. Dokonce i ten nejsiln\u011bj\u0161\u00ed polymer (PEEK + CF, \u03c3_H lim \u2248 90 MPa) je p\u0159ibli\u017en\u011b 5\u20136\u00d7 slab\u0161\u00ed v kontaktn\u00ed \u00fanav\u011b ne\u017e nejslab\u0161\u00ed ocelov\u00e1 varianta (45# QT, \u03c3_H lim \u2248 490 MPa) a 20\u00d7 slab\u0161\u00ed ne\u017e cementovan\u00e9 ozuben\u00e9 kolo 20CrMnTi (\u03c3_H lim \u2248 1700 MPa). Kontaktn\u00ed nap\u011bt\u00ed v ozuben\u00e9m p\u00e1ru se nep\u0159\u00edmo \u00fam\u011brn\u011b zvy\u0161uje s druhou mocninou pr\u016fm\u011bru rozte\u010de a \u0161\u00ed\u0159ky \u010deln\u00ed plochy \u2013 tak\u017ee jedin\u00fd zp\u016fsob, jak pou\u017e\u00edt polymer spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> p\u0159i vy\u0161\u0161\u00edm p\u0159en\u00e1\u0161en\u00e9m v\u00fdkonu je jeho podstatn\u00e1 v\u011bt\u0161\u00ed velikost ne\u017e ekvivalentn\u00ed ocelov\u00e9 ozuben\u00e9 kolo.<\/p>\n

Praktick\u00e9 limity v\u00fdkonu pro polymer standardn\u00ed velikosti \u0161ikm\u00e1 ozuben\u00e1 kola<\/strong> (M2\u2013M4, vn\u011bj\u0161\u00ed pr\u016fm\u011br 40\u2013100 mm, b = 20\u201340 mm):<\/p>\n

\n\n\n\n\n\n\n\n
Polymern\u00ed t\u0159\u00edda<\/th>\nMaxim\u00e1ln\u00ed p\u0159enosov\u00fd v\u00fdkon (typick\u00e1 velikost, 100 ot.\/min.)<\/th>\nMaxim\u00e1ln\u00ed p\u0159enosov\u00fd v\u00fdkon (p\u0159i 1000 ot.\/min.)<\/th>\n<\/tr>\n<\/thead>\n
POM M3, vn\u011bj\u0161\u00ed pr\u016fm\u011br 60 mm, \u0161=25 mm<\/td>\n\u2248 0,12 kW<\/td>\n\u2248 0,35 kW<\/td>\n<\/tr>\n
PA66+GF30 M3, vn\u011bj\u0161\u00ed pr\u016fm\u011br 60 mm, \u0161=25 mm<\/td>\n\u2248 0,20 kW<\/td>\n\u2248 0,55 kW<\/td>\n<\/tr>\n
PEEK M3, vn\u011bj\u0161\u00ed pr\u016fm\u011br 60 mm, \u0161=25 mm<\/td>\n\u2248 0,30 kW<\/td>\n\u2248 0,80 kW<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
Rozhodovac\u00ed pravidlo:<\/strong> Pokud po\u017eadovan\u00fd v\u00fdkon p\u0159esahuje p\u0159ibli\u017en\u011b 0,5\u20131 kW na p\u0159evodov\u00fd stupe\u0148, je ocel jedin\u00fdm praktick\u00fdm materi\u00e1lem bez ohledu na omezen\u00ed aplikace. Nad touto hranic\u00ed pou\u017eijte spr\u00e1vnou alternativu z potravin\u00e1\u0159sk\u00e9 nebo korozivzdorn\u00e9 oceli (SS316L pro styk s potravinami, SS304 pro lehkou korozi, 316L nitridovan\u00e1 pro vy\u0161\u0161\u00ed zat\u00ed\u017een\u00ed), sp\u00ed\u0161e ne\u017e se pokou\u0161ejte o zv\u011bt\u0161en\u00ed polymeru. spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> do neprakticky velk\u00e9 velikosti.<\/div>\n

V\u00fdroba: Vst\u0159ikov\u00e1n\u00ed plast\u016f vs. obr\u00e1b\u011bn\u00ed z ty\u010de<\/h2>\n

Vst\u0159ikovan\u00e1 polymerov\u00e1 ozuben\u00e1 kola (v\u00fdrobn\u00ed mno\u017estv\u00ed)<\/h3>\n

Vst\u0159ikov\u00e1n\u00edm plast\u016f se vyr\u00e1b\u00ed polymer \u0161ikm\u00e1 ozuben\u00e1 kola<\/strong> za velmi n\u00edzk\u00e9 jednotkov\u00e9 n\u00e1klady pro mno\u017estv\u00ed nad p\u0159ibli\u017en\u011b 500\u20131000 kus\u016f, ale vy\u017eaduje drah\u00e9 n\u00e1stroje (M10 000\u2013M100 000 na formu). P\u0159esnost je omezena na t\u0159\u00eddu DIN 8\u201310 kv\u016fli anizotropii vyvolan\u00e9 tokem, propadlin\u00e1m v bl\u00edzkosti n\u00e1boje a rozd\u00edl\u016fm ve smr\u0161t\u011bn\u00ed mezi st\u0159edem a okrajem. Pro polymer s jemnou rozte\u010d\u00ed p\u0159esn\u00fdch z\u00e1vit\u016f \u0161ikm\u00e1 ozuben\u00e1 kola<\/strong> (M0,5\u2013M2), DIN t\u0159\u00edda 8\u20139 lisov\u00e1n\u00edm je dosta\u010duj\u00edc\u00ed pro po\u017eadavky aplikace (kancel\u00e1\u0159sk\u00e1 technika, spot\u0159ebn\u00ed elektronika).<\/p>\n

Obr\u00e1b\u011bno z extrudovan\u00e9 ty\u010de (p\u0159esn\u00e9, mal\u00e1 mno\u017estv\u00ed)<\/h3>\n

Pro prototypy, mal\u00e9 \u0161ar\u017ee nebo p\u0159esn\u00e9 polymery spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> V n\u011bkter\u00fdch aplikac\u00edch je ozuben\u00e9 kolo odvalov\u00e1no CNC z extrudovan\u00e9 ty\u010de nebo desky. P\u0159esnost je omezena na t\u0159\u00eddu DIN 6\u20137 pro POM (materi\u00e1l se \u010dist\u011b obr\u00e1b\u00ed karbidov\u00fdmi n\u00e1stroji); PEEK a UHMWPE jsou tak\u00e9 macAsiale s podobnou p\u0159esnost\u00ed. Korea Ever-Power obr\u00e1b\u00ed POM a PEEK. \u0161ikm\u00e1 ozuben\u00e1 kola<\/strong> z extrudovan\u00e9 ty\u010de bez minim\u00e1ln\u00edho objednac\u00edho mno\u017estv\u00ed, s uveden\u00edm spr\u00e1vn\u00e9ho \u00fahlu stoup\u00e1n\u00ed \u0161roubovice, m\u011b\u0159en\u00ed analyz\u00e1torem ozuben\u00fdch kol a certifik\u00e1tu materi\u00e1lu (dopis shody s FDA) ke ka\u017ed\u00e9 objedn\u00e1vce.<\/p>\n

Zp\u016fsoby selh\u00e1n\u00ed specifick\u00e9 pro polymern\u00ed \u0161roubovicov\u00e1 ozuben\u00e1 kola<\/h2>\n

Polymer \u0161ikm\u00e1 ozuben\u00e1 kola<\/strong> selh\u00e1vaj\u00ed v d\u016fsledku jin\u00fdch mechanism\u016f ne\u017e ocelov\u00e1 ozuben\u00e1 kola. T\u0159i nej\u010dast\u011bj\u0161\u00ed zp\u016fsoby selh\u00e1n\u00ed jsou:<\/p>\n