CZ370092A3 - Radial or thrust rolling-contact bearing - Google Patents
Radial or thrust rolling-contact bearing Download PDFInfo
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- CZ370092A3 CZ370092A3 CS923700A CS370092A CZ370092A3 CZ 370092 A3 CZ370092 A3 CZ 370092A3 CS 923700 A CS923700 A CS 923700A CS 370092 A CS370092 A CS 370092A CZ 370092 A3 CZ370092 A3 CZ 370092A3
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- Prior art keywords
- radial
- roller bearing
- protective coating
- axial roller
- zinc
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/34—Rollers; Needles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7826—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of the opposing surface cooperating with the seal, e.g. a shoulder surface of a bearing ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/62—Selection of substances
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/08—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with two or more rows of balls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
- F16C19/28—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with two or more rows of rollers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/50—Alloys based on zinc
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/60—Thickness, e.g. thickness of coatings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/40—Application independent of particular apparatuses related to environment, i.e. operating conditions
- F16C2300/42—Application independent of particular apparatuses related to environment, i.e. operating conditions corrosive, i.e. with aggressive media or harsh conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
- F16C33/605—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings with a separate retaining member, e.g. flange, shoulder, guide ring, secured to a race ring, adjacent to the race surface, so as to abut the end of the rolling elements, e.g. rollers, or the cage
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
- Rolls And Other Rotary Bodies (AREA)
Description
Oblast technikyTechnical field
Vynález se týká radiálního nebo axiálního válivého ložiska z oceli s navzájem soustředně na sobě nebo rovnoběžně uspořádanými kroužky popřípadě kotouči, mezi jejichž k sobě přivrácenými oběžnými plochami se odvalují valivá tělesa.The invention relates to a radial or axial roller bearing made of steel with rings or discs disposed concentrically on one another or parallel to one another, the rolling surfaces of which face each other between the facing surfaces.
Dosavadní stav technikyBACKGROUND OF THE INVENTION
Radiální nebo axiální valivá ložiska výše definovaného druhu jsou obecně známá. Jsou-li taková valivá ložiska použita v poháněčích prvcích, které jsou vystaveny působení kyselin nebo solných roztoků, vznikne po poměrně krátkém čase na plochách valivých těles a na těsnicích plochách koroze, která vede ke zničení valivého ložiska. Úkolem vynálezu je zamezit korozi součástí valivých ložisek, přičemž opatření proti korozi má mít dlouhou životnost.Radial or axial roller bearings of the type defined above are generally known. If such roller bearings are used in drive elements which are exposed to acids or saline solutions, corrosion will occur after a relatively short time on the surfaces of the rolling elements and on the sealing surfaces, leading to the destruction of the rolling bearing. SUMMARY OF THE INVENTION It is an object of the invention to prevent corrosion of roller bearing components, the corrosion protection being intended to have a long service life.
Podstata vynálezuSUMMARY OF THE INVENTION
Vynález řeší úkol tím, že vytváří radiální nebo axiální valivé ložisko z oceli s navzájem soustředně na sobě nebo rovnoběžně uspořádanými kroužky popřípadě kotouči, mezi jejichž k sobě přivrácenými oběžnými plochami se odvalují valivá tělesa, jehož podstata spočívá v tom, že alespoň oběžné plochy jsou opatřeny ochranným povlakem proti korozi z galvanické slitiny zinku. Takovým polotvrdým povlečením oběžných ploch a případně zbývajícího povrchu valivého ložiska se dosáhne výjimečně účinné ochrany proti korozi. Při tom zůstane tribologické namáhání, jako převalení valivého ložiska bez negativních následků pro životnost povlaku. Při tomto namáhání nejvíce krajního pásma zatlačí se duktilní slitinové vrstvy do stávajícího profilu zdrsnění oběžných ploch a tam pevně lpějí. Nadbytečné podíly vrstev jsou během provozu z pásma tlaku oběžných ploch vytlačeny. Tím je během krátké doby záběhu, která obsahuje jen několik málo cyklů, vytvořeno zcela funkční valivé ložisko s vysokými vlastnostmi odolnosti proti korozi. Únavová odolnost ložiska se popsanými procesy zaválcování do hloubky drsnosti nezhorší, nýbrž zlepší.The invention solves the problem by providing a radial or axial rolling bearing made of steel with rings or discs arranged concentrically on one another or parallel to one another, whose rolling surfaces facing each other roll rolling elements, the principle being that at least the running surfaces are provided with corrosion protective coating of zinc alloy. Such a semi-hard coating of the raceways and possibly the remaining surface of the roller bearing provides exceptionally effective corrosion protection. In doing so, tribological stress, such as rolling of the roller bearing, will remain without negative consequences for the life of the coating. In this stress of the outermost zone, the ductile alloy layers are pressed into the existing roughening profile of the running surfaces and adhered firmly there. Excess layer fractions are forced out of the running surface pressure zone during operation. In this way, a fully functional roller bearing with high corrosion resistance properties is created within a short running-in time, which comprises only a few cycles. The fatigue resistance of the bearing does not deteriorate, but improves, with the described roughness-rolling processes.
V dalším rozvedení vytváří předložený vynález radiální nebo axiální valivé ložisko z oceli s navzájem soustředně na sobě nebo rovnoběžně uspořádanými kroužky popřípadě kotouči, mezi jejichž k sobě přivrácenými oběžnými plochami se odvalují valivá tělesa, přičemž alespoň z jedné strany valivých těles na vnějším kroužku nebo na jednom z kotoučů je uspořádán těsnicí kroužek, jehož těsnicí límec je ve styku s opěrnou plochou vnitřního kroužku, s opěrnou plochou úhelníkového obrubového prstence spojeného s vnitřním kroužkem nebo s opěrnou plochou protilehlého kotouče.In a further embodiment, the present invention provides a radial or axial rolling bearing made of steel with rings or discs concentrically stacked on one another or parallel to one another, with rolling bodies rolling between the facing surfaces facing one another, at least on one side of the rolling bodies on the outer ring or one a sealing ring is provided from the discs, the sealing collar of which is in contact with the abutment surface of the inner ring, the abutment surface of the angular flange ring connected to the inner ring or to the abutment surface of the opposite disc.
Radiální valivé ložisko výše definovaného druhu je známé z patentového spisu DS-GEM SO 05 28. Toto radiální valivé ložisko má na obou stranách řad valivých těles obrubové prstence, přičemž radiální těsnicí prstenec upevněný na vnějším kroužku přiléhá svým těsnicím límcem ke vnějšímu obvodu příslušného obrubového prstence. Kromě toho může těsnicí límec v jednom obměněném provedení radiálního valivého ložiska, které není v tomto spise znázorněno, známým způsobem přiléhat také bezprostředně ke vnějšímu obvodu vnitřního kroužku. Je-li toto radiální valivé ložisko na svém vnějším povrchu vystaveno kapalinám, které vyvolávají korozi součástí vyrobených z oceli, vznikají potom problémy zejména tehdy, když vznikne koroze v úseku, na který dosedá těsnicí límec radiálního těsnicího prstence. Potom totiž nemůže radiální těsnění více plnit svou funkci a po poměrně krátkém čase vznikne poškození ložiska.A radial roller bearing of the type defined above is known from DS-GEM SO 05 28. This radial roller bearing has rim rings on both sides of the rows of roller bodies, the radial sealing ring mounted on the outer ring abutting with its sealing collar to the outer periphery of the respective rim ring. . In addition, the sealing collar, in one variation of a radial roller bearing not shown in this specification, may also be in a known manner immediately adjacent the outer circumference of the inner ring. If this radial roller bearing is exposed on its outer surface to liquids that cause corrosion of steel parts, then problems arise especially when corrosion occurs in the section on which the sealing collar of the radial sealing ring rests. This is because the radial seal can no longer fulfill its function and after a relatively short time the bearing will become damaged.
Podle předloženého vynálezu je podle patentového nároku číslo 2 opěrná plocha opatřena ochranným povlakem proti korozi z galvanické slitiny zinku. Tímto způsobem se zamezí koroze v oblasti těsnicího límce, takže funkčnost ložiska zůstane zachována.According to the present invention, according to claim 2, the support surface is provided with a corrosion protective coating of galvanic zinc alloy. In this way, corrosion in the area of the sealing collar is prevented so that the bearing functionality is maintained.
Podle výhodných provedení předloženého vynálezu je ochran ný povlak proti korozi ze slitiny zinku a železa nebo ze sliti ny zinku a niklu nebo ze slitiny zinku a kobaltu.According to preferred embodiments of the present invention, the corrosion protective coating is a zinc-iron alloy or a zinc-nickel alloy or a zinc-cobalt alloy.
Podle dalšího výhodného provedení předloženého vynálezu má ochranný povlak proti korozi tlouštku od 0,1 do 2,0/Um.According to another preferred embodiment of the present invention, the corrosion protective coating has a thickness of from 0.1 to 2.0 µm.
Tyto tlcuštky povlaku se pohybují v řádu velikosti drsnosti povrchu součástí valivých ložisek. Tím se dosáhne toho, že při uvedení valivého ložiska do provozu galvanická vrstva zapadne úplně do profilu zdrsnění povrchu a tím nemůže vyvíjet žádný negativní vliv na odchylky součástí. Následkem působení ní oběžné plochy lozvyšují ochranu oběžne jjemnějšího otěru uvnitř žíska se zaválcují částice hloubky vrstvy adrsr fc C ΘΧ,'Θ né dráhy proti korozi a představují určitý způsob nouzového běhu popřípadě suchého mazání. Ka základě nepatrných tloušťek vrstvy je také možno snížit zátěž okolí.These coating thicknesses are in the order of magnitude of the surface roughness of the roller bearing components. As a result, when the rolling-contact bearing is put into operation, the galvanic layer fits completely into the roughening profile of the surface and thus can not have any negative effect on the deviations of the components. As a result of the action of the orbital surface, increasing the protection of the finer abrasion within the plunger, the particles of the depth of the layer adr of the corrosion path are rolled and represent a kind of emergency run or dry lubrication. Due to the low layer thicknesses, it is also possible to reduce the environmental load.
iáirno to je však nosné použít ochranný povlak proti korozi o tlouštce od 3,0 do 9,0/um na oběžných plochách nebo na opěrné ploše radiálního těsnicího kroužku. Při takové tlouštce vrstvy ochranného povlaku proti korozi může být jeho životnost při vysokém tribologickém zatížení maximálně zvýšena.However, it is also possible to use a corrosion protective coating with a thickness of 3.0 to 9.0 µm on the raceways or on the bearing surface of the radial sealing ring. With such a layer of corrosion protective coating, its service life can be maximally increased under high tribological loads.
Fodle dalšího výhodného provedení předloženého vynálezu je ochranný povlak proti korozi opatřen vrchní vrstvou žlutého pochromování. Podílem niklu nebo železa v zinkovém povlaku a při použití zmíněného chromovaného provedení se zvýší jeho pevnost a tvrdost z asi 60 HV na asi 300 HV, takže pevnost proti otěru se mnohonásobně zvýší.According to a further preferred embodiment of the present invention, the corrosion protective coating is provided with a yellow chromium top layer. The proportion of nickel or iron in the zinc coating and the use of said chrome finish increases its strength and hardness from about 60 HV to about 300 HV, so that the abrasion strength is many times increased.
Vynález není omezen na význaky patentových nároků. Je mož né význaky jednotlivých nároků kombinovat·The invention is not limited to the features of the claims. It is possible to combine features of individual claims ·
Přehled obrázků na výkresechOverview of the drawings
Vynález je znázorněn na výkresech, kde obr.l je částečný pohled na jednořadé radiální kuličkové ložisko v podélném řezu, jehož vnitřní i vnější kroužek jsou opatřeny ochranným povlakem proti korozi, obr.2 je podélný řez válečkovým valivým ložiskem s úhelníkovými obrubovými prstenci a obr. 3 je částečný pohled na dvouřadé radiální kuličkové ložisko v podélném » '· řezu á čelním utěsněním radiálními těsnicími kroužky.BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial longitudinal sectional view of a single row radial ball bearing having both an inner and an outer ring with a corrosion protective coating; FIG. 2 is a longitudinal section through a cylindrical roller bearing with angular flange rings; 3 is a partial longitudinal sectional view of a double row radial ball bearing and a face seal with radial sealing rings.
Příklady provedení vynálezuDETAILED DESCRIPTION OF THE INVENTION
V obr.l je znázorněno jednořadé radiální kuličkové ložisko 1, které sestává z vnitřního kroužku 2, z vnějšího kroužku X, z věnce 4 valivých těles a z klece χ. Valivá tělesa věnce 4 se odvalují mezi k sobě přivrácenými drážkovitými oběžnými plochami 2 a 8 vnitřního kroužku 2_ a vnějšího kroužku χ. Podle vynálezu jsou vnitřní kroužek 2 i vnější kroužek X opatřeny na celém povrchu ochrannými povlakem 6 proti korozi ze slitiny zinku. Tento ochranný povlak 6 proti korozi vyrobený s výhodou se slitiny zinku a niklu, zinku a železa nebo zinku a kobaltu, je také vytvořen uvnitř drážkovítých oběžných ploch 7 a 8 a může mít tlouštku vrstvy od 0,1 do 3,Cýum. Kromě toho je zde1 shows a single row radial ball bearing 1 which consists of an inner ring 2, an outer ring X, a ring 4 and a cage χ. The rolling bodies of the rim 4 roll between the groove-shaped race faces 2 and 8 of the inner ring 2 and the outer ring χ facing each other. According to the invention, both the inner ring 2 and the outer ring X are provided with a zinc alloy corrosion protective coating 6 over their entire surface. This corrosion protective coating 6, preferably made of zinc-nickel, zinc-iron alloys or zinc-cobalt alloys, is also formed within the groove raceways 7 and 8 and may have a layer thickness of from 0.1 to 3 cm. In addition, it is here
-4také možnost vytvořit tlouštky vrstev větší než 3,0/Um, přičemž horní mez tlouštky vrstvy je asi 9,CyUiu.Also the possibility of creating layer thicknesses greater than 3.0 µm, the upper limit of the layer thickness being about 9, CyUiu.
V obr.2 je znázorněno dvouřadé válečkové ložisko Q, které sestává z vnitřního kroužku 10 a z k němu. soustředného vnějšího kroužku 11. Kroužky 10 a 11 mají navzájem protilehlé oběžné plochy 12 a 13, mezi kterými jsou uloženy dvě řady válečků 14. Pro vedení válečků 14 jsou ve vnějším kroužku 11 vytvořeny obruby 15 a 16, zatímco ve vnitřním kroužku 10 jsou obě řady válečků 14 vedeny úhelníkovými obrubovými prstenci 17 a 18. Tyto úhelníkové obrubové prstence 17 a 18 tvoří na svém vnějším obvodu opěrnou plochu 19 pro radiální těsnicí krcužky 20 a 21. Každý radiální těsnicí kroužek 20 a 21 je na svém vnějším obvodu zasazen do vnějšího kroužku 11 a má těsnicí límec 22, který klouže pružně předepjat na opěrné ploše 19 příslušného úhelníkového obrubového prstence 17 popřípadě 18. Podle vynálezu je opěrná plocha 19 opatřena ochranným povlakem 23 proti korozi ze slitiny zinku a niklu, který má přednostně tlouštku vrstvy od 0,1 do 3,0/um. Tlouštka vrstvy však může být až 9$0/um.FIG. 2 shows a double row cylindrical roller bearing 10 which consists of an inner ring 10 and therefrom. The rings 10 and 11 have opposing running surfaces 12 and 13 between which two rows of rollers 14 are disposed. To guide the rollers 14, flanges 15 and 16 are formed in the outer ring 11, while in the inner ring 10 both rows are provided. The radial sealing rings 19 and 18 form an abutment surface 19 for the radial sealing rings 20 and 21 on their outer circumference. Each radial sealing ring 20 and 21 is mounted on its outer circumference in the outer ring 11. and has a sealing collar 22, which slides resiliently biased on the abutment surface 19 of the respective angular skirt ring 17 or 18. According to the invention, the abutment surface 19 is provided with a corrosion protective coating 23 of zinc-nickel alloy, preferably having a layer thickness of 0.1 to 3.0 / µm. However, the layer thickness may be up to 9 $ 0 / µm.
Tímto ochranným povlakem 23 proti korozi opěrné plochy 19 se zamezí podkoroze radiálních těsnicích kroužků 20 a 21. která by jinak rozrušila utěsnění dvouřadového válečkového ložiska 2.· Povlak ze slitiny například zinku a niklu nanesený na opěrnou plochu 19 poskytuje dobrou ochranu proti korozi a má dlouhou životnost.This anti-corrosion coating 23 of the support surface 19 avoids undercutting of the radial sealing rings 20 and 21. which would otherwise upset the sealing of the double row cylindrical roller bearing 2. Coating of e.g. zinc-nickel alloy applied to the support surface 19 provides good corrosion protection lifetime.
V obr.3 je znázorněné dvouřadé radiální kuličkové ložisko 24, které má vnější kroužek 25 a vnitřní kroužek 26 s mezi nimi uloženými věnci 27 a 28 valivých těles. Tyto věnce 27 a 28 valivých těles se odvalují ve drážkovitých oběžných plochách 2£ a 20. Na každé čelní straně je ve vnějším kroužku 25 upevněn radiální těsnicí kroužek 31 popřípadě 32, jehož oba těsnicí límce 33 a 34 kloužou po opěrných plochách 35 a 36 vnitřního kroužku 26. Tyto opěrné plochy 35 a 36 vnitřního kroužku 26 jsou podle vynálezu opatřeny ochranným povlakem 37 proti korozi ze slitiny zinku. Také v tomto případě je podkoroze těsnicího spojení, která by vedla ke vnikání nečistot do vnitřku radiálního kuličkového ložiska £, vyloučena.FIG. 3 shows a double row radial ball bearing 24 having an outer ring 25 and an inner ring 26 with roller rims 27 and 28 disposed therebetween. These rims 27 and 28 roll in grooved raceways 26 and 20. On each end side, a radial sealing ring 31 or 32 is mounted in the outer ring 25, the two sealing collars 33 and 34 of which slide on the abutment surfaces 35 and 36 of the inner ring. These abutment surfaces 35 and 36 of the inner ring 26 are, according to the invention, provided with a corrosion protective coating 37 of zinc alloy. In this case too, a corrosion of the sealing connection which would lead to the ingress of dirt into the interior of the radial ball bearing 6 is avoided.
Vynález není omezen na tři uvedené příklady. I v lineárních kuličkových ložiskách může být v oblasti těsnění vytvořen ochran ný povlak proti korozi z binární či dokonce ternární slitiny.The invention is not limited to the three examples. Even in linear ball bearings, a corrosion protective coating of binary or even ternary alloy can be provided in the sealing area.
-5- .-5-.
Claims (7)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4142313A DE4142313C2 (en) | 1991-12-20 | 1991-12-20 | Radial or axial roller bearings made of steel |
Publications (2)
Publication Number | Publication Date |
---|---|
CZ370092A3 true CZ370092A3 (en) | 1993-07-14 |
CZ283740B6 CZ283740B6 (en) | 1998-06-17 |
Family
ID=6447716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CS923700A CZ283740B6 (en) | 1991-12-20 | 1992-12-16 | Radial or thrust rolling-contact bearing |
Country Status (7)
Country | Link |
---|---|
JP (1) | JP2886013B2 (en) |
KR (1) | KR100242577B1 (en) |
BR (1) | BR9205068A (en) |
CZ (1) | CZ283740B6 (en) |
DE (2) | DE9117069U1 (en) |
RO (1) | RO109771B1 (en) |
RU (1) | RU2079740C1 (en) |
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- 1991-12-20 DE DE9117069U patent/DE9117069U1/en not_active Expired - Lifetime
- 1991-12-20 DE DE4142313A patent/DE4142313C2/en not_active Expired - Lifetime
-
1992
- 1992-12-16 CZ CS923700A patent/CZ283740B6/en not_active IP Right Cessation
- 1992-12-16 KR KR1019920024439A patent/KR100242577B1/en not_active IP Right Cessation
- 1992-12-17 JP JP4336964A patent/JP2886013B2/en not_active Expired - Lifetime
- 1992-12-18 RO RO92-01584A patent/RO109771B1/en unknown
- 1992-12-18 BR BR9205068A patent/BR9205068A/en not_active IP Right Cessation
- 1992-12-18 RU RU9292004600A patent/RU2079740C1/en not_active IP Right Cessation
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CN103717930A (en) * | 2011-04-05 | 2014-04-09 | Imo控股有限责任公司 | Rotary joint for underwater operation and system equipped therewith for generating energy from waterpower |
Also Published As
Publication number | Publication date |
---|---|
JPH05240256A (en) | 1993-09-17 |
DE4142313A1 (en) | 1993-06-24 |
BR9205068A (en) | 1993-06-22 |
RU2079740C1 (en) | 1997-05-20 |
KR930013510A (en) | 1993-07-22 |
DE9117069U1 (en) | 1995-07-20 |
CZ283740B6 (en) | 1998-06-17 |
RO109771B1 (en) | 1995-05-30 |
DE4142313C2 (en) | 1998-10-29 |
JP2886013B2 (en) | 1999-04-26 |
KR100242577B1 (en) | 2000-03-02 |
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Legal Events
Date | Code | Title | Description |
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IF00 | In force as of 2000-06-30 in czech republic | ||
MM4A | Patent lapsed due to non-payment of fee |
Effective date: 20091216 |