WO2008155166A2 - Palier à roulements sans cage - Google Patents

Palier à roulements sans cage Download PDF

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Publication number
WO2008155166A2
WO2008155166A2 PCT/EP2008/055541 EP2008055541W WO2008155166A2 WO 2008155166 A2 WO2008155166 A2 WO 2008155166A2 EP 2008055541 W EP2008055541 W EP 2008055541W WO 2008155166 A2 WO2008155166 A2 WO 2008155166A2
Authority
WO
WIPO (PCT)
Prior art keywords
rolling bearing
water
cageless
bearing according
substance
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.)
Ceased
Application number
PCT/EP2008/055541
Other languages
German (de)
English (en)
Other versions
WO2008155166A3 (fr
Inventor
Wolfgang Losert
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.)
IHO Holding GmbH and Co KG
Original Assignee
Schaeffler 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 KG filed Critical Schaeffler KG
Publication of WO2008155166A2 publication Critical patent/WO2008155166A2/fr
Publication of WO2008155166A3 publication Critical patent/WO2008155166A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • F16C19/44—Needle bearings
    • F16C19/46—Needle bearings with one row or needles
    • 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
    • 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
    • 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
    • F16C33/6633—Grease properties or compositions, e.g. rheological properties
    • 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
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6688—Lubricant compositions or properties, e.g. viscosity
    • F16C33/6692—Liquids other than oil, e.g. water, refrigerants, liquid metal
    • 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
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/04—Preventing damage to bearings during storage or transport thereof or when otherwise out of use
    • F16C41/045—Devices for provisionally retaining needles or rollers in a bearing race before mounting of the bearing on a shaft

Definitions

  • the invention relates to a cage-free rolling bearing with at least one bearing ring and held by means of a viscoelastic substance in its mounting position rolling elements.
  • the maximum bearing capacity of rolling bearings is achieved when they are performed with the largest possible number of rolling elements, so for example full complement. This generally precludes the use of WälzMechhimfigen, on the one hand have the task to keep the rolling elements in their opposite position on the bearing ring, and usually with a distance from each other, which excludes contact with the rolling elements and thus a contact friction.
  • a problem of cageless bearings is that they easily fall apart during their handling or transportation. Although there are already known embodiments in which a falling apart of the bearing with special, complex constructive measures is prevented, which makes these camps, however, more expensive.
  • rolling bearings which are lubricated by the surrounding the rolling bearing medium, such as water.
  • the lubricating function of the viscoelastic substance used for holding the rolling elements during assembly is not necessary at all, i. This substance is dispensable or even undesirable after the assembly process.
  • the invention has for its object to provide a cageless rolling bearing of the type mentioned in the O- term of claim 1, which on the one hand makes use of the technically simple and cheap way to hold the rolling elements for mounting on the associated bearing ring by means of a suitable substance which, on the other hand, however, can be freed of this substance and prepared for the so-called media lubrication without any special effort for the subsequent operational use.
  • the invention is based on the finding that the simplest approach for achieving the stated object lies in the suitable selection of the viscoelastic substance itself.
  • the invention is therefore based on a cage-free roller bearing with at least one bearing ring and on this held by means of a viscoelastic substance in its operating position rolling elements.
  • a dissolving substance is used as the viscoelastic substance in which the rolling bearing is operatively surrounded by the medium. This substance is selected, for example, so that it dissolves as completely as possible and without residue in a short transition phase during a test run, so that the medium surrounding the rolling bearing can take over the lubrication.
  • media-lubricated rolling bearings are preferably bearings which are used in water or a water-containing medium.
  • the invention is described below by way of example with reference to a roller bearing for such an application, but by no means with a restriction thereto.
  • These are predominantly bearings in food applications, ie in food processing machines, or in applications that may not be loaded with chemicals, oils, fats or the like.
  • besides food-processing machines, volumeters, pumps or the like may be mentioned.
  • a water-soluble, food-safe and water-neutral gel in particular a water-based gel, be used as the viscoelastic substance.
  • water-neutral is understood to mean that no gel-damaging influences on a body of water emanate from this gel.
  • Gels can have very different chemical compositions and different properties.
  • a lubricant according to another embodiment, a contact gel can be used.
  • a gel is used using the following substances: water, glycerol, phenoxyethanol, carbomer, methylparaben, sodium hydroxide, methyldibromo-glutaronitrile.
  • Another embodiment of the invention provides that a gel is used using the following substances: collagen hydrolyzate, gelatin.
  • the gels provided for the present invention are preferably made of water, there is a risk in rostan legien bearings that the bearing components oxidize. Therefore, it is provided according to a preferred embodiment of the invention that a stainless material is used as material for the parts of the rolling bearing. According to another embodiment of the invention it is provided that the parts of the rolling bearing are coated with a stainless or stainless or generally non-oxidizing material.
  • a rust-free material for example, a X20Cr13 steel comes into question.
  • Another suitable stainless material is Cronidur® steel.
  • the single drawing figure shows in a longitudinal section a needle bush with held by a holding gel needles.
  • the needle bushing 2 shown in the single FIGURE comprises a bush-type outer bearing ring 4, on the inner circumference of which rolling elements 6 designed as needles are arranged "in full".
  • the rolling elements 6 are held by no cage in their mutual position and the bearing ring 4.
  • a viscoelastic substance 8 is provided in a conventional manner, in which the rolling elements 6 are embedded.
  • the viscoelastic substance 8 is designed so that it dissolves in the medium surrounding the rolling bearing operationally.
  • the bearing bush 2 for use of the bearing bush 2 in a food-processing machine, in which the medium surrounding the rolling bearing is generally water or contains water, it is provided that a water-soluble, food-safe and water-neutral gel is used as the viscoelastic substance 8, as further described above.
  • the gel takes over the lubrication of the rolling bearing for a short transitional period until it dissolves in the water or in the aqueous medium, which then take over the lubrication of the rolling bearing.

Landscapes

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

Abstract

L'invention concerne un palier à roulements sans cage comportant au moins une bague de roulement (4) ainsi que des éléments de roulement (6) maintenus contre le palier dans leur position de fonctionnement au moyen d'une substance viscoélastique (8). Pour la substance viscoélastique, on utilise une substance qui se dissout dans le milieu entourant le palier à roulements en fonctionnement. Ce mileu permet de lubrifier le palier à roulements. Pour les machines de transformation de produits alimentaires, pour lesquelles la substance entourant le palier à roulements en fonctionnement est généralement de l'eau, voire une substance aqueuse, on utilise, en tant que substance viscoélastique, un gel hydrosoluble, neutre pour l'eau et qui ne dénature pas ou peu les aliments.
PCT/EP2008/055541 2007-06-16 2008-05-06 Palier à roulements sans cage Ceased WO2008155166A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007027763.8 2007-06-16
DE200710027763 DE102007027763A1 (de) 2007-06-16 2007-06-16 Käfigloses Wälzlager

Publications (2)

Publication Number Publication Date
WO2008155166A2 true WO2008155166A2 (fr) 2008-12-24
WO2008155166A3 WO2008155166A3 (fr) 2009-04-30

Family

ID=39944601

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/055541 Ceased WO2008155166A2 (fr) 2007-06-16 2008-05-06 Palier à roulements sans cage

Country Status (2)

Country Link
DE (1) DE102007027763A1 (fr)
WO (1) WO2008155166A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020200086A1 (de) * 2020-01-07 2021-07-08 Aktiebolaget Skf Transportsicherungseinheit, Verfahren zum Anbringen einer Transportsicherungseinheit und Verfahren zum Montieren

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE928020C (de) 1951-09-29 1955-05-23 Kugelfischer G Schaefer & Co Herstellung und Ausbildung von Nadellagern

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1907015A (en) * 1931-11-19 1933-05-02 Rollway Bearing Company Inc Antifriction bearing
US4492415A (en) * 1982-03-03 1985-01-08 Skf Industries, Inc. Unitary full complement bearing components containing rolling elements in a self-supporting lubricating matrix
JPS62200022A (ja) * 1986-02-25 1987-09-03 Hirai Seisakusho:Kk ころがり軸受または旋回キヤスタ−における転動素子の組付け方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE928020C (de) 1951-09-29 1955-05-23 Kugelfischer G Schaefer & Co Herstellung und Ausbildung von Nadellagern

Also Published As

Publication number Publication date
WO2008155166A3 (fr) 2009-04-30
DE102007027763A1 (de) 2008-12-18

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