FR2479369A1 - Journal bearing with caged rollers - uses mix of solid and larger hollow rollers push fit in annular gap to reduce chatter - Google Patents

Journal bearing with caged rollers - uses mix of solid and larger hollow rollers push fit in annular gap to reduce chatter Download PDF

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Publication number
FR2479369A1
FR2479369A1 FR8007332A FR8007332A FR2479369A1 FR 2479369 A1 FR2479369 A1 FR 2479369A1 FR 8007332 A FR8007332 A FR 8007332A FR 8007332 A FR8007332 A FR 8007332A FR 2479369 A1 FR2479369 A1 FR 2479369A1
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FR
France
Prior art keywords
rollers
rolling
members
solid
raceway
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR8007332A
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French (fr)
Inventor
Eric Marteau
Arnold E Fredericksen
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TORRINGTON FRANCE
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TORRINGTON FRANCE
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Filing date
Publication date
Application filed by TORRINGTON FRANCE filed Critical TORRINGTON FRANCE
Priority to FR8007332A priority Critical patent/FR2479369A1/en
Publication of FR2479369A1 publication Critical patent/FR2479369A1/en
Withdrawn legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/04Ball or roller bearings, e.g. with resilient rolling bodies
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22Bearings 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
    • F16C19/44Needle bearings
    • F16C19/46Needle bearings with one row or needles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/50Other types of ball or roller bearings
    • F16C19/505Other types of ball or roller bearings with the diameter of the rolling elements of one row differing from the diameter of those of another row
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/306Means to synchronise movements

Abstract

The journal bearing uses rollers (2) to transfer radial shaft (5) loads to the bore (1a) of a sleeve (1). The rollers are located at regular intervals on a shaft (5) circumference by a cage (4) with slot-holes (8). Their dia. is nominally less than the difference between the shaft (5) and sleeve (1) radii. At least three regularly distributed rollers (3) are hollow, are a tight radially stressed fit in the axial interval, and deform elastically under load to bring adjacent rollers into play. One roller may have a lesser axial length than the solid rollers obviating bearing chatter.

Description

Un palier radial 9 roulement (a billes, a rouleaux, ou a aiguilles) est constitué par un élément extérieur, un élément intérieur et des organes de roulement entre les deux pour permet tre une rotation relative des éléments avec un minimum de frotte ment. L'un des ou les deux éléments consistent en une bague (intérieure et/ou extérieure) solidaire de l'une des pieces tournant par rapport à l'autre. En théorie, il ne doit y avoir aucun jeu radial entre les deux éléments susdits. Cependant, dans la pratique, les tolérances de fabrication et d'usinage sont telles qu'il se produit une dispersion dans les dimensions de chacun des éléments constituant le palier et que les jeux existent. Ce jeux ne sont pas gênants, lorsque le palier est chargé.En revanche, en l'absence de charge, de leur fait, des vibrations peuvent se produire et conduire à des phénomenes de résonances, d'une part, genantspour la bonne tenue mécanique des éléments mis en oeuvre, et d'autre part, générateurs de bruit. A radial bearing 9 bearing (with balls, rollers, or needles) is constituted by an external element, an internal element and rolling members between the two to allow relative rotation of the elements with a minimum of friction. One or both elements consist of a ring (interior and / or exterior) integral with one of the parts rotating relative to the other. In theory, there should be no radial clearance between the two aforementioned elements. However, in practice, the manufacturing and machining tolerances are such that there is a dispersion in the dimensions of each of the elements constituting the bearing and that the clearances exist. These games are not annoying, when the bearing is loaded. On the other hand, in the absence of load, of their fact, vibrations can occur and lead to phenomena of resonances, on the one hand, annoying for the good mechanical behavior elements used, and secondly, noise generators.

La présente invention entend remédier à ces inconvénients en proposant un dispositif de roulement pour palierradal qui com prend un perfectionnement par lequel le palier est toujours légèrement chargé, même en l'absence d'une charge extérieure. Ainsi, on crée un rattrapage automatique des jeux radiaux pouvant exister entre les deux éléments tournant l'un par rapport à l'autre d'un palier et l'on évite la création des vibrations et du bruit susdit. The present invention intends to remedy these drawbacks by proposing a rolling device for palierradal which comprises an improvement by which the bearing is always lightly loaded, even in the absence of an external load. Thus, an automatic take-up of the radial clearances which may exist between the two elements rotating one with respect to the other of a bearing is created and the creation of the above vibrations and noise is avoided.

A cet effet, l'invention a donc pour objet un dispositif de roulement pour palier radial comprenant au moins une bague définissant un chemin de roulement et des organes de roulement mainte- nus au contact dudit chemin de roulement, dans lequel lesdits organes de roulement sont constitués par une pluralité d'organes pleins connus en eux-mêmes, et par au moins trois organes possédant un évidement interne délimitant avec leur surface extérieure de roulement une paroi de révolution déformable élastiquement, lesdits organes évidés étant régulièrement répartis sur le chemin de roulement et d'un diamètre exterieur légèrement plus important que celui de chacun des organes de la pluralité susdite. To this end, the subject of the invention is therefore a rolling device for a radial bearing comprising at least one ring defining a raceway and running bodies maintained in contact with said raceway, in which said running bodies are constituted by a plurality of solid members known in themselves, and by at least three members having an internal recess delimiting with their external rolling surface an elastically deformable wall of revolution, said hollow members being regularly distributed on the raceway and of an outside diameter slightly larger than that of each of the organs of the above-mentioned plurality.

Dans un mode préféré de réalisation de l'invention, les organes de roulement susdits sont constitués par des rouleaux ou aiguilles, les rouleaux ou aiguilles évidés intérieurement étant de longueur axiale plus courte que celle des rouleaux pleins. In a preferred embodiment of the invention, the abovementioned rolling members are constituted by rollers or needles, the rollers or needles hollowed out internally being of shorter axial length than that of the solid rollers.

Dans le cas où les rouleaux susdits sont maintenus sur le chemin de roulement au moyen d'une cage, celle-ci comporte des logements axialement plus courts pour recevoir lesdits rouleaux. In the case where the aforementioned rollers are maintained on the raceway by means of a cage, this latter comprises axially shorter housings for receiving said rollers.

creux.hollow.

Enfin, dans une application habituelle de l'invention, la bague susdite sera extérieure auxdits organes de roulement. Finally, in a usual application of the invention, the above-mentioned ring will be external to said rolling members.

L'invention sera mieux comprise au cours de la description donnée ci-après titre d'exemple purement indicatif et non limitatif qui permettra d'en dégager les avantages et les caractéristiques secondaires. The invention will be better understood during the description given below by way of purely indicative and non-limiting example which will make it possible to identify the advantages and the secondary characteristics thereof.

Il sera fait référence aux dessins annexés dans lesquels
- la figure 1 est une vue en coupe radiale d'un mode de réalisation préféré de l'invention à l'état libre ;
- la figure 2 est une vue partielle de la figure l, le dispositif de roulement étant mis en place sur un arbre central
- la figure 3 illustre, par une vue en plan, une portion de la cage de roulement mise en oeuvre dans l'invention.
Reference will be made to the accompanying drawings in which
- Figure 1 is a radial sectional view of a preferred embodiment of the invention in the free state;
- Figure 2 is a partial view of Figure l, the rolling device being placed on a central shaft
- Figure 3 illustrates, in a plan view, a portion of the rolling cage implemented in the invention.

En se reportant a ces figures, on voit un dispositif de roulement constitué par une bague extérieure l possédant un chemin de roulement la sur lequel porte une pluralité d'organes de roulement pleins 2 (ici des rouleaux, ou des aiguilles). Parmi cette pluralité de rouleaux conventionnels, on a placé des rouleaux 3 possédant un évidement intérieur 3a axial. Cet évidement délimite avec la surface de roulement des rouleaux 3, une paroi de révolution dont l'épaisseur est telle qutelleest élastiquement déformable pour une charge prédéterminée.Ces rouleaux sont régulièrement répartis sur le chemin de roulement (ici trois décalés l'un de l'autre de 120 ) et leur diametre extérieur D est légèrement plus important que le diamètre d des rouleaux 2. Referring to these figures, there is shown a rolling device constituted by an outer ring l having a raceway on which carries a plurality of solid rolling members 2 (here rollers, or needles). Among this plurality of conventional rollers, rollers 3 are placed having an axial internal recess 3a. This recess defines with the rolling surface of the rollers 3, a wall of revolution whose thickness is such that it is elastically deformable for a predetermined load. These rollers are regularly distributed on the raceway (here three offset one of the other than 120) and their outside diameter D is slightly larger than the diameter d of the rollers 2.

Ces rouleaux 2 et 3 sont maintenus dans la bague 1 au moyen d'une cage 4 connue en elle-même et dans cette utilisation. These rollers 2 and 3 are held in the ring 1 by means of a cage 4 known in itself and in this use.

On remarquera cependant, au vu de la figure 3, que cette cage comporte des ouvertures 8 pour recevoir les rouleaux 2 et des ouvertures 9 plus courtes pour recevoir les rouleaux évidés 3. En effet, il sera avantageux de prévoir les rouleaux 3 de longueur axiale plus courte que celle des rouleaux 2 pour les raisons exposées ci-après.Note, however, in view of Figure 3, that this cage has openings 8 to receive the rollers 2 and shorter openings 9 to receive the hollowed rollers 3. Indeed, it will be advantageous to provide the rollers 3 of axial length shorter than that of the rollers 2 for the reasons explained below.

On voit, sur la figure l, que le cercle 5 tangent aux rouleaux 3 est de diamètre plus petit que celui 6 tangent aux rouleaux 2. Le cercle 6 représente le cercle de diamètre théorique d'une bague intérieure ou d'un arbre 7 recevant les éléments 1, 2 et 3. Or, le diamètre réel de cet arbre, ou bague 7, n'est jamais égal à ce diametre théorique du fait des tolérances de fabrication, et se situe toujours en dessous de cette valeur théorique. It can be seen in FIG. 1 that the circle 5 tangent to the rollers 3 is of smaller diameter than that 6 tangent to the rollers 2. The circle 6 represents the circle of theoretical diameter of an inner ring or of a shaft 7 receiving elements 1, 2 and 3. However, the actual diameter of this shaft, or ring 7, is never equal to this theoretical diameter due to manufacturing tolerances, and is always below this theoretical value.

Ainsi, comme on le voit sur la figure 2, il existe un jeu J entre les rouleaux 2 et l'arbre ou la bague 7, dont la valeur est variable d'un dispositif à l'autre. Ce jeu j est cependant toujoùr inférieur à la différence des rayons du cercle 5 et du cercle 6.Thus, as can be seen in FIG. 2, there is a clearance J between the rollers 2 and the shaft or the ring 7, the value of which is variable from one device to another. This clearance j is however always less than the difference of the radii of circle 5 and circle 6.

Ainsi, lorsque l'on monte le dispositif de roulement sur l'arbre, ou la bague 7, on provoque une compression radiale des rouleaux creux 3 qui est autorisée par la déformabilité élastique de ces derniers. On crée ainsi une précharge du dispositif de roulement par laquelle tout jeu radial est supprimé, même lorsqu'il n'est pas chargé. Thus, when the rolling device is mounted on the shaft, or the ring 7, it causes a radial compression of the hollow rollers 3 which is authorized by the elastic deformability of the latter. This creates a preload of the rolling device by which all radial play is eliminated, even when it is not loaded.

Lorsque le palier est chargé de maniere extérieure en fonctionnement, l'arbre, ou la bague 7, est appliqué sur les rouleaux 2 situés dans la direction de la charge et ce sont ceux-ci qui l'encaissent. Le ou les rouleaux 3 situés a ce niveau se déforment un peu plus, tout en restant dans leur plage de déformation élastique. When the bearing is loaded externally in operation, the shaft, or the ring 7, is applied to the rollers 2 located in the direction of the load and it is these which collect it. The roller (s) 3 located at this level deform a little more, while remaining within their range of elastic deformation.

Les dispositions de l'invention ci-dessus décrites permettent de supprimer les vibrations engendrées à vide dans le palier et les bruits en résultant. Elles présentent, en outre, l'avantage d'être simples a réaliser et d'un coût très peu supérieur au coût d'un dispositif classique. The arrangements of the invention described above make it possible to eliminate the vibrations generated when empty in the bearing and the noises resulting therefrom. They also have the advantage of being simple to produce and of a cost very little greater than the cost of a conventional device.

Plus particulierement, le fait d'avoir prévu des rouleaux 3 plus courts axialement que les rouleaux 2 permet d'obtenir les avantages suivants
- mise en place du dispositif sur l'arbre 7 facilité par un centrage mutuel réalisé avant emmanchement sur une longueur axiale 1
- contrôle possible par pige du diametre intérieur 6 au niveau de la portée de longueur 1 1
- chargement automatique préservé de la cage par les rouleaux 2, les fenêtres 9 plus courtes constituant un empêchement naturel pour ce chargement laissant donc libre l'espace à garnir de rouleaux 3 manuellement-ou automatiquement.
More particularly, having the rollers 3 axially shorter than the rollers 2 provides the following advantages
- Installation of the device on the shaft 7 facilitated by mutual centering carried out before fitting over an axial length 1
- possible control by rod of the inside diameter 6 at the length span 1 1
- Automatic loading preserved from the cage by the rollers 2, the shorter windows 9 constituting a natural impediment for this loading thus leaving free the space to be filled with rollers 3 manually or automatically.

L'invention n'est pas limitée à la description qui vient d'en être donnée, mais couvre auoentraire toutes les variantes qui pourraient lui être apportées sans sortir de son cadre ni de son esprit. C'est ainsi, par exemple, que la bague 1 peut être une bague intérieure, tandis que le dispositif est à placer dans un alésage ou une bague extérieure. De même, les organes de roulement peuvent etre des billes dont certaines seront creuses. Enfin, on peut prévoir un nombre plus important d'éléments de roulement creux, notamment en fonction de la valeur de la precharge que l'on veut obtenir. The invention is not limited to the description which has just been given, but covers all the variants which could be made to it without departing from its scope or its spirit. Thus, for example, the ring 1 can be an inner ring, while the device is to be placed in a bore or an outer ring. Similarly, the rolling members can be balls, some of which will be hollow. Finally, a greater number of hollow rolling elements can be provided, in particular as a function of the value of the preload which it is desired to obtain.

L'invention trouve une application intéressante dans le domaine des industries mécaniques. The invention finds an interesting application in the field of mechanical industries.

Claims (4)

REVENDICATIONS 1. Dispositif de roulement pour palier radial constitué par au moins une bague définissant un chemin de roulement et par des organes de roulement maintenus au contact dudit chemin de rouliement, caractérisé en ce que lesdits organes de roulement sont constitués par une pluralité d'organes pleins connus en eux-mêmes, et par au moins trois organes possédant un évidement interne dEli- mitant avec leur surface extérieure de roulement, une paroi de révolution déformable élastiquement, lesdits organes évidés étant regulierement répartis sur le chemin de roulement et d'un diametre extérieur légèrement plus important que celui de chacun des organes de la pluralité susdite. 1. Rolling device for radial bearings constituted by at least one ring defining a raceway and by rolling members held in contact with said rolling path, characterized in that said rolling members are constituted by a plurality of solid members known in themselves, and by at least three members having an internal recess delimiting with their external rolling surface, an elastically deformable wall of revolution, said recessed members being regularly distributed on the raceway and of an external diameter slightly more important than that of each of the organs of the above-mentioned plurality. 2. Dispositif selon la revendication 1, caractérisé en ce que les organes de roulement susdits sont constitués par des rouleaux, ou aiguilles, les rouleaux ou aiguilles évidés intérieurement étant de longueur axiale plus courte que celle des rouleaux pleins. 2. Device according to claim 1, characterized in that the aforementioned rolling members are constituted by rollers, or needles, the rollers or needles hollowed out internally being of axial length shorter than that of the solid rollers. 3. Dispositif selon la revendication 2, caractérisé en ce que les rouleaux susdits sont maintenus sur le chemin de roulement au moyennd'une cage qui comporte des logements axialement plus courts pour recevoir lesdits rouleaux creux. 3. Device according to claim 2, characterized in that the said rollers are maintained on the raceway by means of a cage which has axially shorter housings to receive said hollow rollers. 4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la bague susdite est extérieure auxdits organes de roulement. 4. Device according to any one of the preceding claims, characterized in that the aforesaid ring is external to said rolling members.
FR8007332A 1980-04-01 1980-04-01 Journal bearing with caged rollers - uses mix of solid and larger hollow rollers push fit in annular gap to reduce chatter Withdrawn FR2479369A1 (en)

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Application Number Priority Date Filing Date Title
FR8007332A FR2479369A1 (en) 1980-04-01 1980-04-01 Journal bearing with caged rollers - uses mix of solid and larger hollow rollers push fit in annular gap to reduce chatter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8007332A FR2479369A1 (en) 1980-04-01 1980-04-01 Journal bearing with caged rollers - uses mix of solid and larger hollow rollers push fit in annular gap to reduce chatter

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0711929A1 (en) * 1994-11-09 1996-05-15 SKF Industrial Trading & Development Company, B.V. Rolling element bearing having improved wear characteristics
NL1003141C2 (en) * 1996-05-15 1997-11-18 Skf Ind Trading & Dev Rolling bearing with improved wear characteristics, and rolling element for such a bearing.
GB2408078A (en) * 2003-11-17 2005-05-18 Timken Us Corp A rolling contact bearing having both compressible and rigid rolling elements.
DE102005004034A1 (en) * 2005-01-28 2006-08-03 Schaeffler Kg Radially pre-stressed roller bearing for rack and pinion steering gear of motor vehicle servo-steering mechanism, has elastically deformable rolling body, which is smaller than that of another rolling body in its axial expansion
DE102006024376A1 (en) * 2006-05-24 2007-11-29 Schaeffler Kg Rolling bearings with different guide pockets
EP1921334A2 (en) * 2006-11-09 2008-05-14 Delphi Technologies, Inc. Needle roller bearing
WO2008061504A1 (en) 2006-11-22 2008-05-29 Schaeffler Kg Radial roller bearing, in particular for storing shafts in wind turbine transmissions
DE102006055029A1 (en) * 2006-11-22 2008-05-29 Schaeffler Kg Radial rolling bearings, in particular for the storage of shafts in wind power transmissions
WO2008061508A1 (en) 2006-11-22 2008-05-29 Schaeffler Kg Radial roller bearing, in particular for storing shafts in wind turbine transmissions
WO2008061507A1 (en) 2006-11-22 2008-05-29 Schaeffler Kg Radial roller bearing, in particular for storing shafts in wind turbine transmissions
DE102006057451A1 (en) * 2006-12-06 2008-06-12 Schaeffler Kg Bearing arrangement, especially for selector fork of transmission in motor vehicle, has at least one flexible body with enlarged rolling diameter to create vibration damping between shaft and outer bearing race
EP1960687A2 (en) * 2005-12-14 2008-08-27 Brinkman Products, Inc. Davenport multi-spindle screw machine, and improved tool arm for use therein
DE102007010348A1 (en) 2007-03-03 2008-09-04 Schaeffler Kg Radial roller bearing for shaft of wind power transmission has measurements of rings, solid rollers and hollow rollers such as to leave clearance for fitting
DE102007062391A1 (en) 2007-12-22 2009-06-25 Schaeffler Kg Rolling element comprising a hollow roller and an overload body
DE102007060621A1 (en) 2007-12-15 2009-06-25 Schaeffler Kg Hollow roller body for roller bearing, has connectors accommodate lubricant and fill cavities, and cavities closed on both sides by connectors, where lubricant content of cavities is delivered into roller bearing
WO2012150056A1 (en) * 2011-05-04 2012-11-08 Schaeffler Technologies AG & Co. KG Rolling bearing
CN103797255A (en) * 2011-07-28 2014-05-14 舍弗勒技术有限两合公司 Tunnel roller
DE102013201326A1 (en) * 2013-01-28 2014-07-31 Aktiebolaget Skf Bearing assembly for wheel bearing for motor vehicle, has rolling elements that are arranged between inner bearing ring and outer bearing ring
DE102014203240A1 (en) 2014-02-24 2015-08-27 Schaeffler Technologies AG & Co. KG Rolling element and method for producing a rolling element
WO2019237238A1 (en) * 2018-06-12 2019-12-19 昆山光腾智能机械有限公司 Transmission roller, cycloidal pin speed reducer provided with same and bearing

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DE1261709B (en) * 1962-07-02 1968-02-22 Oskar E Peter Bearing element composed of a cage and cylindrical rollers
FR2061041A5 (en) * 1969-09-20 1971-06-18 Maschf Augsburg Nuernberg Ag
US3765071A (en) * 1972-09-07 1973-10-16 W Bowen Method of forming a roller bearing of superior runout characteristics

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1261709B (en) * 1962-07-02 1968-02-22 Oskar E Peter Bearing element composed of a cage and cylindrical rollers
FR2061041A5 (en) * 1969-09-20 1971-06-18 Maschf Augsburg Nuernberg Ag
US3765071A (en) * 1972-09-07 1973-10-16 W Bowen Method of forming a roller bearing of superior runout characteristics

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9401873A (en) * 1994-11-09 1996-06-03 Skf Ind Trading & Dev Rolling bearing with improved wear characteristics.
US6149311A (en) * 1994-11-09 2000-11-21 Skf Industrial Trading & Development Company, B.V. Rolling element bearing having at least one rolling element which is harder than the other rolling elements and harder than the races
EP0711929A1 (en) * 1994-11-09 1996-05-15 SKF Industrial Trading & Development Company, B.V. Rolling element bearing having improved wear characteristics
NL1003141C2 (en) * 1996-05-15 1997-11-18 Skf Ind Trading & Dev Rolling bearing with improved wear characteristics, and rolling element for such a bearing.
EP0807761A1 (en) * 1996-05-15 1997-11-19 SKF Industrial Trading & Development Company, B.V. Rolling element bearing having improved wear characteristics, and rolling element for such bearing
US5967670A (en) * 1996-05-15 1999-10-19 Skf Industrial Trading & Development Company B.V. Rolling element bearing having at least one rolling element having a hardness greater than the hardness of the other rolling elements
GB2408078A (en) * 2003-11-17 2005-05-18 Timken Us Corp A rolling contact bearing having both compressible and rigid rolling elements.
DE102005004034A1 (en) * 2005-01-28 2006-08-03 Schaeffler Kg Radially pre-stressed roller bearing for rack and pinion steering gear of motor vehicle servo-steering mechanism, has elastically deformable rolling body, which is smaller than that of another rolling body in its axial expansion
EP1960687A2 (en) * 2005-12-14 2008-08-27 Brinkman Products, Inc. Davenport multi-spindle screw machine, and improved tool arm for use therein
EP1960687A4 (en) * 2005-12-14 2012-06-27 Brinkman Products Inc Davenport multi-spindle screw machine, and improved tool arm for use therein
DE102006024376A1 (en) * 2006-05-24 2007-11-29 Schaeffler Kg Rolling bearings with different guide pockets
DE102006024376B4 (en) * 2006-05-24 2016-03-24 Schaeffler Technologies AG & Co. KG Rolling bearings with different guide pockets
EP1921334A3 (en) * 2006-11-09 2008-09-17 Delphi Technologies, Inc. Needle roller bearing
EP1921334A2 (en) * 2006-11-09 2008-05-14 Delphi Technologies, Inc. Needle roller bearing
US8210754B2 (en) 2006-11-22 2012-07-03 Schaeffler Technologies AG & Co. KG Radial roller bearing having hollow rollers
DE102006055027A1 (en) * 2006-11-22 2008-05-29 Schaeffler Kg Radial rolling bearings, in particular for the storage of shafts in wind power transmissions
JP2010510455A (en) * 2006-11-22 2010-04-02 シャエフラー カーゲー Radial roller bearings especially for wind power transmission shafts
WO2008061503A1 (en) 2006-11-22 2008-05-29 Schaeffler Kg Radial roller bearing, in particular for storing shafts in wind turbine transmissions
WO2008061507A1 (en) 2006-11-22 2008-05-29 Schaeffler Kg Radial roller bearing, in particular for storing shafts in wind turbine transmissions
DE102006055026A1 (en) * 2006-11-22 2008-05-29 Schaeffler Kg Radial rolling bearings, in particular for the storage of shafts in wind power transmissions
WO2008061508A1 (en) 2006-11-22 2008-05-29 Schaeffler Kg Radial roller bearing, in particular for storing shafts in wind turbine transmissions
WO2008061504A1 (en) 2006-11-22 2008-05-29 Schaeffler Kg Radial roller bearing, in particular for storing shafts in wind turbine transmissions
DE102006055029A1 (en) * 2006-11-22 2008-05-29 Schaeffler Kg Radial rolling bearings, in particular for the storage of shafts in wind power transmissions
JP4956618B2 (en) * 2006-11-22 2012-06-20 シャエフラー カーゲー Radial roller bearings especially for wind power transmission shafts
US8157452B2 (en) 2006-11-22 2012-04-17 Schaeffler Kg Radial roller bearing for storing shafts in wind turbine transmissions
CN101595317B (en) * 2006-11-22 2012-03-07 谢夫勒两合公司 Radial roller bearing, in particular for storing shafts in wind turbine transmissions
DE102006055028A1 (en) * 2006-11-22 2008-05-29 Schaeffler Kg Radial rolling bearings, in particular for the storage of shafts in wind power transmissions
JP2010510456A (en) * 2006-11-22 2010-04-02 シャエフラー カーゲー Radial roller bearings especially for supporting shafts with wind power transmissions
DE102006057451A1 (en) * 2006-12-06 2008-06-12 Schaeffler Kg Bearing arrangement, especially for selector fork of transmission in motor vehicle, has at least one flexible body with enlarged rolling diameter to create vibration damping between shaft and outer bearing race
WO2008106933A1 (en) * 2007-03-03 2008-09-12 Schaeffler Kg Radial anti-friction bearing, particularly cylinder roller bearing for the support of shafts in wind power gearboxes
CN101622463B (en) * 2007-03-03 2012-02-08 谢夫勒两合公司 Rradial anti-friction bearing, particularly cylinder roller bearing for the support of shafts in wind power gearboxes
US8328429B2 (en) 2007-03-03 2012-12-11 Schaeffler Technologies AG & Co. KG Radial anti-friction bearing, particularly cylinder roller bearing for the support of shafts in wind power gearboxes
DE102007010348A1 (en) 2007-03-03 2008-09-04 Schaeffler Kg Radial roller bearing for shaft of wind power transmission has measurements of rings, solid rollers and hollow rollers such as to leave clearance for fitting
DE102007060621A1 (en) 2007-12-15 2009-06-25 Schaeffler Kg Hollow roller body for roller bearing, has connectors accommodate lubricant and fill cavities, and cavities closed on both sides by connectors, where lubricant content of cavities is delivered into roller bearing
WO2009079997A3 (en) * 2007-12-22 2009-12-17 Schaeffler Kg Rolling element comprising a hollow roller and an overload element
DE102007062391A1 (en) 2007-12-22 2009-06-25 Schaeffler Kg Rolling element comprising a hollow roller and an overload body
WO2009079997A2 (en) * 2007-12-22 2009-07-02 Schaeffler Kg Rolling element comprising a hollow roller and an overload element
WO2012150056A1 (en) * 2011-05-04 2012-11-08 Schaeffler Technologies AG & Co. KG Rolling bearing
CN103797255A (en) * 2011-07-28 2014-05-14 舍弗勒技术有限两合公司 Tunnel roller
CN103797255B (en) * 2011-07-28 2016-08-17 舍弗勒技术股份两合公司 Tunnel roller
DE102013201326A1 (en) * 2013-01-28 2014-07-31 Aktiebolaget Skf Bearing assembly for wheel bearing for motor vehicle, has rolling elements that are arranged between inner bearing ring and outer bearing ring
DE102014203240A1 (en) 2014-02-24 2015-08-27 Schaeffler Technologies AG & Co. KG Rolling element and method for producing a rolling element
US11359670B2 (en) 2018-06-12 2022-06-14 Quanta Machinery Co., Ltd. Transmission roller, and pin-teeth cycloid reducer with the same and bearing with the same
WO2019237238A1 (en) * 2018-06-12 2019-12-19 昆山光腾智能机械有限公司 Transmission roller, cycloidal pin speed reducer provided with same and bearing

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