DE9301764U1 - Ball bearings for high temperatures - Google Patents
Ball bearings for high temperaturesInfo
- Publication number
- DE9301764U1 DE9301764U1 DE9301764U DE9301764U DE9301764U1 DE 9301764 U1 DE9301764 U1 DE 9301764U1 DE 9301764 U DE9301764 U DE 9301764U DE 9301764 U DE9301764 U DE 9301764U DE 9301764 U1 DE9301764 U1 DE 9301764U1
- Authority
- DE
- Germany
- Prior art keywords
- ball bearing
- contact surfaces
- high temperatures
- balls
- bearing according
- 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.)
- Expired - Lifetime
Links
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 229910010293 ceramic material Inorganic materials 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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
- F16C33/37—Loose spacing bodies
- F16C33/3706—Loose spacing bodies with concave surfaces conforming to the shape of the rolling elements, e.g. the spacing bodies are in sliding contact with the 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
- 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
- F16C19/20—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows with loose spacing bodies, e.g. balls, between the bearing balls
-
- 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
- F16C33/303—Parts of ball or roller bearings of hybrid bearings, e.g. rolling bearings with steel races and ceramic rolling elements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Rolling Contact Bearings (AREA)
Description
S K F G m b H Schwei-nfurt, 04.02.1993S K F G m b H Schwei-nfurt, 04.02.1993
DE 93 004 DE ZTEP-ko.seDE 93 004 DE ZTEP-ko.se
BeschreibungDescription
Kugellager für hohe TemperaturenBall bearings for high temperatures
Die Erfindung betrifft ein Kugellager für hohe Temperaturen nach dem Oberbegriff des Hauptanspruches.The invention relates to a ball bearing for high temperatures according to the preamble of the main claim.
Durch das DE-GM 7 317 997 ist ein Kugellager für hohe Temperaturen bekannt, dessen Laufringe aus Wälzlagerstahl und dessen Kugeln aus Keramikmaterial hergestellt sind. Lager dieser Art werden bei Temperaturen von einigen Hundert Grad Celsius und auch für hohe Drehzahlen eingesetzt. Es sind auch Anwendungsfälle bekannt, bei denen die Lager in einem Weichmetallbad eingesetzt sind. Bei allen diesen Anwendungsfällen tritt verstärkter Verschleiß auf. Der Einsatz von Keramikwerkstoffen reduziert den Verschleiß. Bei der bekannten Ausführung kann insbesondere in der Lastzone durch aneinander reibende Kugeln erhöhte Abnutzung auftreten. Aufgabe der Erfindung ist es, ein Kugellager der eingangs genannten Art zu schaffen, das bei hohen Betriebstemperaturen eine erhöhte Lebensdauer aufweist.DE-GM 7 317 997 describes a ball bearing for high temperatures, the races of which are made of rolling bearing steel and the balls of which are made of ceramic material. Bearings of this type are used at temperatures of several hundred degrees Celsius and also for high speeds. Applications are also known in which the bearings are used in a soft metal bath. In all of these applications, increased wear occurs. The use of ceramic materials reduces wear. In the known design, increased wear can occur, particularly in the load zone, due to balls rubbing against each other. The object of the invention is to create a ball bearing of the type mentioned at the beginning that has an increased service life at high operating temperatures.
Die Aufgabe wird gelöst durch die Kugeln auf Abstand haltende Zwischenstücke aus Stahl mit formschlüssige Anlaufflächen bildenden Ausnehmungen an den Stirnseiten.The task is solved by steel spacers that keep the balls at a distance and have recesses on the front sides that form positive contact surfaces.
Die Zwischenstücke sind lose zwischen benachbarten Kugeln eingesetzt. In die Stirnseiten sind Ausnehmungen eingearbeitet, die einen Teil der Kugel trichterförmig aufnehmen. Dadurch ergibt sich ein Formschluß, wodurch sich die Zwischenstücke selbst in Position halten. Zwischenstücke und Kugeln ergeben eine weitgehend spielfreie Aneinanderreihung im Teilkreis des Kugellagers. Durch die Ausführung aus Stahl, vorzugsweise Wälzlagerstahl, ergeben sich die gleichen Kontakteigenschaften wie zwischen den Laufringen und den Kugeln. Insbesondere die Temperaturfestigkeit ist mit den Laufringen gleichzusetzen. Die stirnseitigen Ausnehmungen, insbesondere das Profil der Anlaufflächen für die Kugeln, kann gemäß weiterer Merkmale zwischen kegelförmig, konkav gewölbt und der Kugelform angepaßt ausgeführt sein.The spacers are loosely inserted between adjacent balls. Recesses are incorporated into the front sides, which accommodate part of the ball in a funnel shape. This results in a positive connection, whereby the spacers hold themselves in position. Spacers and balls result in a largely play-free arrangement in the pitch circle of the ball bearing. The design made of steel, preferably roller bearing steel, results in the same contact properties as between the races and the balls. In particular, the temperature resistance is the same as that of the races. The front recesses, in particular the profile of the contact surfaces for the balls, can be designed to be conical, concave or adapted to the shape of the ball, depending on other features.
Diese Merkmale werden nachfolgend an den in der Zeichnung dargestellten Beispielen beschrieben.These features are described below using the examples shown in the drawing.
Es zeigen:Show it:
Figur 1 den teilweisen Querschnitt eines Kugellagers für hohe Temperaturen mit Zwischenstücken aus Stahl und kegeligem Anlaufprofil undFigure 1 shows the partial cross-section of a ball bearing for high temperatures with steel spacers and tapered starting profile and
Figur 2 den Querschnitt eines Zwischenstückes mit konkav gewölbtem Anlaufprofil.Figure 2 shows the cross-section of an intermediate piece with a concavely curved starting profile.
Das in Figur 1 nur teilweise dargestellte Kugellager besteht aus einem Außenring 1, einem Innenring 2, einem dazwischen angeordneten Satz Kugeln 3 und zwischen den Kugeln 3 eingesetzten Zwischenstücken 4. Laufringe 1, 2 und Zwischenstücke 4 sind aus Wälzlagerstahl, die Kugeln 3 aus Keramikwerkstoff hergestellt. Die Zwischenstücke 4 sind aus Rundmaterial gefertigt. In die Stirnseiten ist beiderseits eine kegelige Ausnehmung 5 eingearbeitet. Der Kegelwinkel ist soThe ball bearing, which is only partially shown in Figure 1, consists of an outer ring 1, an inner ring 2, a set of balls 3 arranged between them and spacers 4 inserted between the balls 3. The races 1, 2 and spacers 4 are made of rolling bearing steel, the balls 3 of ceramic material. The spacers 4 are made of round material. A conical recess 5 is machined into the end faces on both sides. The cone angle is so
gewählt, daß sich eine ringförmige Anlauffläche 6 für die Kugeln ergibt, deren Bestimmungslinie etwa tangential an der Kugeloberfläche 7 anliegt. Dadurch ergeben sich gute Schmiereigenschaften. Im Zentrum des Zwischenstückes 4 ist eine Axialbohrung 8 vorgesehen, die Schmiermittel oder je nach Anwendungsfall Gleitmedium aufnehmen kann.chosen so that an annular contact surface 6 is created for the balls, the target line of which is approximately tangential to the ball surface 7. This results in good lubricating properties. In the center of the intermediate piece 4 there is an axial bore 8 which can accommodate lubricant or, depending on the application, a sliding medium.
In Figur 2 ist ein Zwischenstück 4 dargestellt, dessen Ausnehmungen 5 konkav gewölbt und der Kugeloberfläche angepaßt sind. Damit vergrößert sich gegenüber dem Beispiel nach Figur 1 die wirksame Anlauffläche 6.Figure 2 shows an intermediate piece 4 whose recesses 5 are concavely curved and adapted to the surface of the ball. This increases the effective contact surface 6 compared to the example in Figure 1.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9301764U DE9301764U1 (en) | 1993-02-09 | 1993-02-09 | Ball bearings for high temperatures |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9301764U DE9301764U1 (en) | 1993-02-09 | 1993-02-09 | Ball bearings for high temperatures |
Publications (1)
Publication Number | Publication Date |
---|---|
DE9301764U1 true DE9301764U1 (en) | 1993-03-25 |
Family
ID=6889142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE9301764U Expired - Lifetime DE9301764U1 (en) | 1993-02-09 | 1993-02-09 | Ball bearings for high temperatures |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE9301764U1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4207034A1 (en) * | 1992-03-06 | 1993-09-16 | Eich Joseph Kg & Partner Gmbh | Rotary bearing for metal melt bath immersed guide rolls for strip or wire - with inner and outer bearing sleeves and roller cage with cylindrical rollers all of stellite |
EP0794342A1 (en) * | 1996-03-06 | 1997-09-10 | Skf Gmbh | Rolling bearing for rolls |
EP0794340B1 (en) * | 1996-03-06 | 1999-11-17 | Skf Gmbh | Bearing for rolls |
DE10101054B4 (en) * | 2000-01-11 | 2004-09-23 | Nsk Ltd. | holding part |
DE102006034631A1 (en) * | 2006-07-27 | 2008-01-31 | Schaeffler Kg | Rolling bearings with a roller bearing cage |
DE102009016017A1 (en) * | 2009-04-02 | 2010-10-07 | Ab Skf | Retaining element of a rolling bearing |
-
1993
- 1993-02-09 DE DE9301764U patent/DE9301764U1/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4207034A1 (en) * | 1992-03-06 | 1993-09-16 | Eich Joseph Kg & Partner Gmbh | Rotary bearing for metal melt bath immersed guide rolls for strip or wire - with inner and outer bearing sleeves and roller cage with cylindrical rollers all of stellite |
EP0794342A1 (en) * | 1996-03-06 | 1997-09-10 | Skf Gmbh | Rolling bearing for rolls |
EP0794340B1 (en) * | 1996-03-06 | 1999-11-17 | Skf Gmbh | Bearing for rolls |
DE10101054B4 (en) * | 2000-01-11 | 2004-09-23 | Nsk Ltd. | holding part |
DE102006034631A1 (en) * | 2006-07-27 | 2008-01-31 | Schaeffler Kg | Rolling bearings with a roller bearing cage |
DE102009016017A1 (en) * | 2009-04-02 | 2010-10-07 | Ab Skf | Retaining element of a rolling bearing |
DE102009016017B4 (en) * | 2009-04-02 | 2011-04-14 | Ab Skf | Retaining element of a rolling bearing |
EP2236846A3 (en) * | 2009-04-02 | 2012-08-08 | Ab Skf | Retainer element of a rolling bearing |
US8414193B2 (en) | 2009-04-02 | 2013-04-09 | Aktiebolaget Skf | Retaining element for a roller bearing |
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