EP2279358A2 - Cage de palier à roulement - Google Patents

Cage de palier à roulement

Info

Publication number
EP2279358A2
EP2279358A2 EP09753522A EP09753522A EP2279358A2 EP 2279358 A2 EP2279358 A2 EP 2279358A2 EP 09753522 A EP09753522 A EP 09753522A EP 09753522 A EP09753522 A EP 09753522A EP 2279358 A2 EP2279358 A2 EP 2279358A2
Authority
EP
European Patent Office
Prior art keywords
recesses
bearing cage
rolling bearing
cage
rolling
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Withdrawn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
EP09753522A
Other languages
German (de)
English (en)
Inventor
Michael STADTMÜLLER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP2279358A2 publication Critical patent/EP2279358A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6607—Retaining the grease in or near the bearing
    • F16C33/6614—Retaining the grease in or near the bearing in recesses or cavities provided in retainers, races or rolling elements
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/4605—Details of interaction of cage and race, e.g. retention or centring
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • 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
    • F16C19/26—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 a single row of rollers
    • 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
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

Definitions

  • the Wälz stressesmaschinefig forms in addition to inner ring, outer ring and rolling elements a part of rolling bearings.
  • the task of these cages is to guide the rolling elements. They ensure that the rolling elements do not touch each other or rub against one another in opposite directions and ensure even load distribution through uniform distribution of the rolling elements in the bearing. Furthermore, they hold the bearings in separable bearings, the rolling elements in the camp and thus prevent their falling out.
  • Cylindrical roller bearings which are heavily stressed by acceleration and vibration, are usually equipped with an on-board cage. This achieves that the roller set with cage can be supported on the bearing ring.
  • a support on the outer ring (outboard guide / outer ring guide) and on the inner ring (inboard guide / inner ring guide) is possible.
  • the support is generally more effective the larger the area between the cage and the bearing ring.
  • this results in a surface contact between the cage and bearing ring, which adversely affects a grease lubrication, since the lubricant supply can tear off at these points. The probability of this increases with the area being touched. A hot run of the bearing, increased wear and thereby premature bearing failure can be the result.
  • a board guide in conjunction with a grease lubrication is not recommended.
  • Object of the present invention is therefore to provide for camps with priority grease a board-cage, in which a grease supply in the area of the contact surfaces between the bearing ring and cage is enabled while maintaining the support of the cage and thus the roller set on the bearing ring.
  • roller bearing cage with the features of claim 1. Further advantageous embodiments are specified in the independent claims.
  • the object is achieved by a roller bearing cage, for outside and inboard guided bearings, with the rolling elements at a distance holding attached to annular end supports cage webs, wherein the rolling bearing cage Bord Schlbrooke with a maximum outer diameter or a minimum inner diameter of the rolling bearing cage for support on each bearing ring and between Having recesses for receiving lubricant on the board areas.
  • the rolling bearing cage according to the invention is guided outboard at Jardinbordlagern and mecanicbordlagem inside preferably on a bearing ring.
  • the leadership of the rolling bearing cage takes place through the board areas.
  • the cage webs of the rolling bearing cage keep the rolling elements at a distance and are preferably held by at least one inner and one outer end support.
  • the roller bearing cage preferably has recesses for receiving lubricant in the support ring area. Further, recesses for receiving lubricant may be formed in the cage webs.
  • the recesses are particularly preferably opposite as the circumference of the rolling bearing body or preferably equal to the circumference of the rolling bearing body arched. They can also be executed.
  • the recesses are used in grease lubrication as fat deposits, which prevent tearing of the lubricating film.
  • the rolling bearing cage has recesses in the region of the cage webs, which preferably extend only to a maximum extent in the axial direction of the rolling bearing cage in the direction of the end carriers such as the rolling body retainer or extend as far as the stimuli carriers.
  • the recesses in the area of the cage webs can also absorb lubricant and thus act as fat deposits, in order to prevent a tearing of the lubricating film in the rotating bearing. In order to avoid a weakening of the rolling bearing cage, it is advantageous if these recesses do not protrude into the region of the end supports.
  • the recesses in each case particularly preferably merge with one, preferably with several transition radii, into the on-board regions.
  • the transition radii are greater than 1/50 of the maximum outer diameter of Wälzlager- cage.
  • the stripping of lubricant is reduced at the transitions between the board areas and recesses and thus prevents tearing of the lubricating film.
  • a plurality of transition wheels between the board areas and the recesses merge into one another.
  • the recesses are formed in the end support, that in the axial direction of the rolling bearing cage on both sides next to the recesses or on one side of the recesses gene of the stimulator is formed continuously with the maximum diameter or the minimum diameter.
  • an edge of the rolling bearing body with a maximum outer diameter or in réellebord entry remains with minimum inner diameter at least on one side next to the recesses.
  • the recesses thus do not occupy the entire cross-section of the forehead support, but preferably at least one narrow edge remains.
  • the rolling bearing cage can thereby despite the inventive lubrication on the entire circumference, z. B. be performed on a bearing ring.
  • recesses are provided with different sized outer cross-sectional areas.
  • the largest outer cross-sectional areas are at least 50% larger than the smallest outer cross-sectional areas.
  • the recesses have a higher surface roughness than that of the on-board regions; this can also be achieved with a coating, for example.
  • the rough coating supports the adhesion of lubricant in the recesses.
  • the lubricant is better retained in the recesses and can thus be metered into the lubrication process.
  • Fig. 1 is a schematic perspective view of a rolling bearing cage according to the invention according to a first embodiment
  • Figure 2 is a schematic perspective view of a rolling bearing cage according to the invention according to a second embodiment.
  • Fig. 3 is a schematic side view in the axial direction of a transition radius on a rolling bearing cage according to the invention.
  • 1 shows a schematic three-dimensional view of a roller bearing cage 1 according to the invention according to a first embodiment.
  • the rolling bearing cage 1 according to this embodiment is outboard.
  • a roller bearing cage 1 is formed from two end supports 3, 4, which are connected by cage webs 30.
  • the rolling bearing cage 1 has Wälz redesignabilityn 2 for receiving rolling elements (not shown).
  • the end supports 3, 4 have on-board regions 20 in the region of the substantially maximum diameter 5 of the roller body cage 1.
  • the individual board areas 20 are separated in this embodiment by recesses 10 from each other.
  • the roller bearing cage 1 in this embodiment has a smaller than the maximum outer diameter 5, so that it is not guided outside in the region of the recesses 10.
  • a minimum diameter 6 of the roller bearing cage is not provided with recesses 10 in this embodiment.
  • the recesses 10 have an outer cross-sectional area 14. In this embodiment, the board areas 20 and the recesses 10 do not merge into one another like an edge but instead have a transition radius 12 therebetween.
  • the rolling element cage 1 according to the invention according to this embodiment is externally e.g. in a corresponding bearing ring (not shown) out.
  • the guide is made by the board areas 20.
  • the recesses 10 are used in grease lubrication as fat deposits that prevent tearing of the lubricating film. In order to prevent the lubricating film from being stripped off, the recesses 10 pass through transition radii 12 into the rim regions 20. This reduces the wiping effect.
  • FIG. 2 shows a schematic three-dimensional representation of a roller bearing cage according to the invention according to a second embodiment.
  • this embodiment corresponds to the embodiment according to FIG. 1, but the recesses 10 are mutually arranged on the end supports 3, 4 not overlapping.
  • the board areas 20 form as in the Previous embodiment, the maximum outer diameter 5 of the rolling bearing cage 1.
  • the recesses 10 are additionally provided with a coating 50.
  • the rim areas 20 when viewed in summary, support a support, which is continuous around the circumference of the roller bearing cage 1, on a bearing ring. This results in a more stable support of the rolling bearing cage 1. Femer can be avoided by this arrangement possible lows vibrations on Wälzköperkarfig.
  • an uneven distribution of the board areas or the recesses around the circumference is preferably provided for this purpose. This means that the length of the rim areas 20 or the recesses 10 or their angular position about the circumference of the roller bearing cage 1 is different at both end supports 3, 4.
  • the coating 50 which is provided in the region of the recesses 10 in this embodiment, has a higher surface roughness than that in the on-board region, so that there grease can be absorbed on the surface. As a result, the grease is better kept in the area of the recesses 10 as fat deposits.
  • FIG 3 shows a schematic side view in the axial direction of a transition radius on a roller bearing cage according to the invention.
  • the board areas 20 go over radii 12 in the recesses 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne une cage de palier à roulement pour palier à roulement à bord extérieur et à bord intérieur, qui présente des ailettes fixées sur des supports avant et maintenant les corps de roulement à distance. Ladite cage de palier à roulement présente des zones marginales ayant un diamètre extérieur maximal ou un diamètre intérieur minimal de la cage de palier à roulement pour être en appui dans chaque cas sur une bague de palier, et présente également des cavités, entre les zones marginales, pour recevoir du lubrifiant.
EP09753522A 2008-05-29 2009-05-19 Cage de palier à roulement Withdrawn EP2279358A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008025766A DE102008025766A1 (de) 2008-05-29 2008-05-29 Wälzlagerkäfig
PCT/DE2009/000697 WO2009143806A2 (fr) 2008-05-29 2009-05-19 Cage de palier à roulement

Publications (1)

Publication Number Publication Date
EP2279358A2 true EP2279358A2 (fr) 2011-02-02

Family

ID=41226357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09753522A Withdrawn EP2279358A2 (fr) 2008-05-29 2009-05-19 Cage de palier à roulement

Country Status (3)

Country Link
EP (1) EP2279358A2 (fr)
DE (1) DE102008025766A1 (fr)
WO (1) WO2009143806A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112011102719B4 (de) 2010-08-18 2022-08-25 Nsk Ltd. Wälzlager und Werkzeugmaschinen-Spindelapparat
DE102013216893A1 (de) 2013-08-26 2015-02-26 Schaeffler Technologies Gmbh & Co. Kg Wälzlagerkäfig
DE102015201101A1 (de) 2015-01-23 2016-07-28 Schaeffler Technologies AG & Co. KG Wälzlager
DE102016211917A1 (de) * 2016-06-30 2018-01-04 Aktiebolaget Skf Wälzlagerkäfig oder Wälzlagerkäfigsegment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192560A (en) * 1978-08-21 1980-03-11 The Torrington Company Bearing with bearing cage
DE3811958A1 (de) * 1988-04-11 1989-10-19 Kugelfischer G Schaefer & Co Kaefig fuer waelzlager
IT1245292B (it) * 1991-03-26 1994-09-13 Skf Ind Spa Gabbia di trattenimento per rulli conici
DE19530903A1 (de) 1994-08-31 1996-03-07 Barmag Barmer Maschf Wälzlager
DE19959498A1 (de) * 1999-12-10 2001-06-13 Schaeffler Waelzlager Ohg Käfig für ein Wälzlager
JP3651591B2 (ja) * 2001-05-28 2005-05-25 日本精工株式会社 転がり軸受
JP2007010026A (ja) * 2005-06-30 2007-01-18 Ntn Corp 円筒ころ軸受及び円筒ころ軸受用保持器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009143806A3 *

Also Published As

Publication number Publication date
WO2009143806A3 (fr) 2010-01-07
DE102008025766A1 (de) 2009-12-03
WO2009143806A2 (fr) 2009-12-03

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