DE4113526A1 - Roller bearing - has one or more working parts coated with hard corrosion resistant material, typically chrome or tantalum carbide - Google Patents

Roller bearing - has one or more working parts coated with hard corrosion resistant material, typically chrome or tantalum carbide

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Publication number
DE4113526A1
DE4113526A1 DE4113526A DE4113526A DE4113526A1 DE 4113526 A1 DE4113526 A1 DE 4113526A1 DE 4113526 A DE4113526 A DE 4113526A DE 4113526 A DE4113526 A DE 4113526A DE 4113526 A1 DE4113526 A1 DE 4113526A1
Authority
DE
Germany
Prior art keywords
rolling
rolling bearing
cage
feature
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.)
Ceased
Application number
DE4113526A
Other languages
German (de)
Inventor
Rudolf Hoerburger
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Priority to DE4113526A priority Critical patent/DE4113526A1/en
Publication of DE4113526A1 publication Critical patent/DE4113526A1/en
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
    • F16C19/48—Needle bearings with two or more rows of 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/55—Systems consisting of a plurality of bearings with rolling friction with intermediate floating or independently-driven rings rotating at reduced speed or with other differential ball or roller bearings
    • 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
    • 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
    • F16C33/56—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
    • F16C33/58—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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • 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
    • F16C19/34—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 both radial and axial load
    • F16C19/36—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 both radial and axial load with a single row of rollers
    • F16C19/364—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 both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/56—Systems consisting of a plurality of bearings with rolling friction in which the rolling bodies of one bearing differ in diameter from those of another
    • 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
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts

Landscapes

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

Abstract

The roller-bearing has one or more rows of rollers working between two races. They, and one race at least, are of hardened steel suitable for roller bearings. The rollers and races form the working parts. One at least of these parts has a protective coating of hard corrosion-resistant material. The bearing can support an idler wheel on a shaft, and this or the shaft can form one race. Chrome or tantalum carbide can be used as the coating, and the rollers can be housed in a cage whose pockets allow no free movement in the peripheral direction, the cage of polyether sulphone with glass fibre. ADVANTAGE - Low rate of wear.

Description

Die Erfindung betrifft ein Wälzlager mit den Merkmalen:The invention relates to a rolling bearing with the features:

  • - das Wälzlager hat mindestens einen Kranz von Wälzkörpern zwischen einer ersten und zweiten Laufbahn;- The rolling bearing has at least one ring of Rolling elements between a first and a second raceway;
  • - die Wälzkörper und mindestens eine der zwei Laufbahnen bestehen aus für Wälzlager geeignetem gehärteten Stahl;- The rolling elements and at least one of the two raceways consist of hardened steel suitable for rolling bearings;
  • - die Wälzkörper einerseits und die Laufbahnen andererseits bilden die Wälzpartner des Wälzlagers.- The rolling elements on the one hand and the raceways on the other hand, form the rolling partners of the rolling bearing.

Das Wälzlager lagert beispielsweise ein Losrad auf einer Welle. Das Losrad ist beispielsweise ein Zahnrad mit einer Schrägverzahnung auf einer Antriebswelle in einem Schaltgetriebe. Unter Last dreht das Losrad synchron mit der Welle, weil es über eine schaltbare Klauenkupplung drehfest mit der Welle verbunden ist. Das Losrad und die Welle bilden beispielsweise selbst die Laufbahnen, und die Wälzkörper sind beispielsweise Lagernadeln, die in zwei Kränzen oder Reihen angeordnet und in Taschen eines Käfigs in Umfangsrichtung spielfrei achsparallel geführt sind. Mit dieser Ausführung des Wälzlagers erreicht man in einem kleinen Bauraum eine breite Lagerung, die das durch die Axialkomponente der Zahnkraft bewirkte Kippen des Losrades ausreichend begrenzt, solange das Radialspiel klein genug ist. Bei einem Losrad mit großem Lastlauf-Zeitanteil wird jedoch das Radialspiel durch Verschleiß bald so groß, daß die Schrägverzahnung wegen Kantentragen überlastet und zerstört wird.The roller bearing supports, for example, an idler gear a wave. The idler gear is, for example, a gearwheel a helical gear on a drive shaft in one Manual transmission. The idler gear rotates synchronously with the load Shaft because it is non-rotatable via a switchable claw coupling is connected to the shaft. Form the idler gear and the shaft for example, even the raceways and the rolling elements are, for example, bearing needles that are in two rings or Arranged in rows and in pockets of a cage Circumferential direction are guided axially parallel without play. With this version of the rolling bearing can be achieved in one small space a wide storage, which is due to the Axial component of the tooth force caused tilting of the idler gear sufficiently limited as long as the radial play is small enough is. In the case of an idler gear with a large proportion of load running time however, the radial play due to wear will soon be so great that the helical gears are overloaded due to edge supports and gets destroyed.

Der Erfindung liegt die Aufgabe zugrunde, den Verschleiß des Wälzlagers zu begrenzen, so daß beispielsweise die Schrägverzahnung eines Losrades mit großem Lastlauf-Zeitanteil nicht mehr vorzeitig ausfällt. The invention is based, the Limit wear of the rolling bearing so that for example, the helical teeth of an idler gear large proportion of the load run time no longer fails prematurely.  

Diese Aufgabe wird mit den Merkmalen nach Anspruch 1 gelöst, weil die Schutzschicht die Tribooxidation als wesentliche Ursache des Verschleißes weitgehend verhindert. Tribooxidation oder Reibkorrosion findet statt, wenn der Ölfilm durchbrochen wird und die metallischen Oberflächen der Wälzkörper und der Laufbahnen viele schnelle kurze Stick- Slip-Reibwege zurücklegen. Dabei entstehen, wenn keine Schutzschicht nach der Erfindung vorhanden ist, sehr harte Oxidpartikel, die den Verschleiß beschleunigen.This object is achieved with the features of claim 1 solved because the protective layer as the tribooxidation major cause of wear largely prevented. Tribooxidation or fretting corrosion takes place when the Oil film is broken and the metallic surfaces the rolling elements and the raceways many quick short stick Cover slip friction paths. This creates if none Protective layer according to the invention is present, very hard Oxide particles that accelerate wear.

Wenn Losrad und Welle nach Anspruch 3 und 4 selbst die Laufbahnen bilden, kann man außer dem Radialspiel-Kleinstmaß auch das Radialspiel-Größtmaß sehr klein wählen, weil neben den (wegen des üblichen Ausleseverfahrens) sehr geringen Durchmesserabweichungen der Wälzkörper nur noch die Durchmesserabweichungen der Laufbahnen im Losrad und auf der Welle klein gehalten werden müssen. Außerdem werden Losrad und Welle besonders formsteif. Dadurch läuft das Losrad mit besonders geringem Kippwinkel und die Schrägverzahnung mit besonders gutem Tragbild.If idler gear and shaft itself according to claim 3 and 4 You can create raceways in addition to the smallest radial clearance dimension also choose the radial clearance size very small, because next to the (due to the usual selection process) very small Diameter deviations of the rolling elements only the Diameter deviations of the raceways in the idler gear and on the Wave must be kept small. In addition, idler gear and shaft particularly rigid. This means that the idler gear runs with it particularly small tilt angle and the helical teeth with particularly good contact pattern.

Wenn die Wälzkörper nach Anspruch 5 in innen engeren Taschen eines Käfigs, der einen offenen Ring bildet, in Umfangsrichtung spielfrei achsparallel geführt sind, bleiben die Wälzkörper und die Laufbahnen trotz Verschleiß immer rund, weil der Käfig mit den Wälzkörpern dann unter Last langsamer als Losrad und Welle dreht (relativ rückwärts wandert), und der Verschleiß bleibt besonders gering.If the rolling elements according to claim 5 in narrower inside Pockets of a cage forming an open ring in Circumferential direction are guided axially parallel without play, remain the rolling elements and the raceways always in spite of wear round because the cage with the rolling elements is then under load slower than idler gear and shaft rotates (relatively backwards migrates), and the wear remains particularly low.

Wenn der Käfig nach Anspruch 6 nach außen vorgespannt ist und die Wälzkörper immer und nicht nur durch Fliehkraft bei höherer Drehzahl gegen die Laufbahn des Losrades gedrückt werden, bleiben das Laufgeräusch und der Verschleiß besonders gering, weil die Wälzkörper nie gegen die Laufbahn des Losrades hämmern. If the cage is biased according to claim 6 to the outside is and the rolling elements always and not only by centrifugal force at higher speeds against the raceway of the idler gear the running noise and wear remain particularly low because the rolling elements never hit the raceway hammer the idler gear.  

Wenn der Käfig nach Anspruch 7 aus Polyäthersulfon besteht, bleibt der Verschleiß des Käfigs gering, weil die Masse und damit die Fliehkraft des Käfigs und damit die Führungskraft zwischen dem Käfig und den Wälzkörpern gering sind und auch der Reibwert zwischen dem Käfig und den Wälzkörpern klein ist.If the cage according to claim 7 made of polyether sulfone there is little wear on the cage because the Mass and thus the centrifugal force of the cage and thus the Leader between the cage and the rolling elements low and the coefficient of friction between the cage and the Rolling bodies is small.

Eine Chromschicht nach Anspruch 8 und eine Tantalkarbidschicht nach Anspruch 9 erwiesen sich im Versuch als wirksame Schutzschichten gegen Tribooxidation und damit gegen Verschleiß des Wälzlagers.A chrome layer according to claim 8 and one Tantalum carbide layer according to claim 9 proved in the experiment as effective protective layers against tribooxidation and thus against wear of the rolling bearing.

Die Merkmale nach der Erfindung bieten besonders dann Hilfe, wenn die Schrägverzahnung eines Losrades immer wieder vorzeitig ausfällt, weil das Wälzlager wegen Tribooxidation zu schnell verschleißt, aber kein Bauraum für ein größeres, standfesteres Wälzlager vorhanden ist. Umgekehrt kann man mit den Merkmalen nach der Erfindung ein Wälzlager für einen gegebenen Lastfall kleiner ausführen.The features according to the invention offer especially then Help if the helical teeth of an idler gear keep coming back fails prematurely because the roller bearing due to tribooxidation wears out too quickly, but no space for a larger, more stable rolling bearing is available. Conversely, you can with the features according to the invention, a rolling bearing for one Make the given load case smaller.

Mit den Merkmalen nach der Erfindung kann man aber auch bei jedem anderen Wälzlager, bei dem Tribooxidation den Verschleiß beschleunigt, die Lebensdauer verlängern.With the features of the invention you can also in any other rolling bearing in which tribooxidation Wear accelerates, extend the service life.

Die Zeichnung zeigt ein Wälzlager nach der Erfindung: Auf einer teilweise hohlen Antriebswelle 1 ist mit einem zylindrischen Wälzlager 2 ein schrägverzahntes Losrad 3 gelagert. In der Antriebswelle 1 ist mit einem Kegelrollenlager 4 eine Hauptwelle 5 gelagert. Losrad 3 und Antriebswelle 1 bilden Laufbahnen 6, 7 für Wälzkörper 8, 9, die als Lagernadeln ausgeführt und in zwei Reihen oder Kränzen nebeneinander angeordnet sind. Die Wälzkörper 8, 9 sind in Taschen 10, 11 eines geschlitzten Käfigs 12 radial innen geführt. Der Käfig 12 besteht aus Polyäthersulfon, mit Glasfaser verstärkt. Die Wälzkörper 8, 9 und die Laufbahnen 6, 7 im Losrad 3 und auf der Antriebswelle 1 bestehen aus für Wälzlager geeignetem gehärteten Stahl, beispielsweise die Wälzkörper aus 100 Cr 6 und die Laufbahnen 6, 7 aus 20 MnCr 5, und bilden die unter Last immer wieder einander metallisch berührenden Wälzpartner des Wälzlagers 2. Mindestens einer dieser Wälzpartner trägt eine Schutzschicht gegen Tribooxidation, beispielsweise eine Chromschicht oder eine Tantalkarbidschicht.The drawing shows a roller bearing according to the invention: on a partially hollow drive shaft 1 , a helical idler gear 3 is mounted with a cylindrical roller bearing 2 . A main shaft 5 is supported in the drive shaft 1 with a tapered roller bearing 4 . Idler gear 3 and drive shaft 1 form raceways 6 , 7 for rolling elements 8 , 9 , which are designed as bearing needles and are arranged side by side in two rows or rings. The rolling elements 8 , 9 are guided in pockets 10 , 11 of a slotted cage 12 radially on the inside. The cage 12 consists of polyether sulfone, reinforced with glass fiber. The rolling elements 8 , 9 and the raceways 6 , 7 in the idler gear 3 and on the drive shaft 1 consist of hardened steel suitable for rolling bearings, for example the rolling elements made of 100 Cr 6 and the raceways 6 , 7 made of 20 MnCr 5, and form the under load Rolling partners of the rolling bearing 2 that are in contact with each other again and again. At least one of these rolling partners has a protective layer against tribooxidation, for example a chrome layer or a tantalum carbide layer.

BezugszeichenReference numerals

 1 Welle, Antriebswelle
 2 Wälzlager
 3 Losrad
 4 Kegelrollenlager
 5 Hauptwelle
 6 Laufbahn
 7 Laufbahn
 8 Wälzkörper
 9 Wälzkörper
10 Tasche
11 Tasche
12 Käfig 1 shaft, drive shaft
2 roller bearings
3 idler gear
4 tapered roller bearings
5 main shaft
6 career
7 career
8 rolling elements
9 rolling elements
10 pocket
11 pocket
12 cage

Claims (10)

1. Wälzlager mit den Merkmalen:
  • - das Wälzlager (2) hat mindestens einen Kranz von Wälzkörpern (8) zwischen einer ersten Laufbahn (6) und einer zweiten Laufbahn (7);
  • - die Wälzkörper (8) und mindestens eine der zwei Laufbahnen (6, 7) bestehen aus für Wälzlager geeignetem gehärteten Stahl;
  • - die Wälzkörper (8) einerseits und die Laufbahnen (6, 7) andererseits bilden die Wälzpartner des Wälzlagers (2); gekennzeichnet durch das Merkmal:
1. Rolling bearing with the features:
  • - The roller bearing ( 2 ) has at least one ring of roller bodies ( 8 ) between a first raceway ( 6 ) and a second raceway ( 7 );
  • - The rolling elements ( 8 ) and at least one of the two raceways ( 6 , 7 ) consist of hardened steel suitable for rolling bearings;
  • - The rolling elements ( 8 ) on the one hand and the raceways ( 6 , 7 ) on the other hand form the rolling partners of the rolling bearing ( 2 ); characterized by the characteristic:
mindestens einer der Wälzpartner trägt eine Schutzschicht aus hartem, korrosionsfestem Werkstoff.at least one of the rolling partners has a protective layer made of hard, corrosion-resistant material. 2. Wälzlager nach Anspruch 1 mit dem Merkmal: das Wälzlager (2) lagert ein Losrad (3) auf einer Welle (1).2. Rolling bearing according to claim 1 with the feature: the rolling bearing ( 2 ) supports an idler gear ( 3 ) on a shaft ( 1 ). 3. Wälzlager nach Anspruch 2 mit dem Merkmal: das Losrad (3) bildet selbst eine Laufbahn (6).3. Rolling bearing according to claim 2 with the feature: the idler gear ( 3 ) itself forms a raceway ( 6 ). 4. Wälzlager nach Anspruch 2 mit dem Merkmal: die Welle (1) bildet selbst eine Laufbahn (7).4. Rolling bearing according to claim 2 with the feature: the shaft ( 1 ) itself forms a raceway ( 7 ). 5. Wälzlager nach Anspruch 2 mit den Merkmalen:
  • - die Wälzkörper (8) sind in Taschen (10) eines Käfigs (12) achsparallel geführt;
  • - der Käfig (12) bildet einen offenen Ring;
  • - die Taschen (10) sind innen enger als außen und führen die Wälzkörper (8) in Umfangsrichtung spielfrei.
5. Rolling bearing according to claim 2 with the features:
  • - The rolling elements ( 8 ) are guided in pockets ( 10 ) of a cage ( 12 ) axially parallel;
  • - The cage ( 12 ) forms an open ring;
  • - The pockets ( 10 ) are narrower inside than outside and guide the rolling elements ( 8 ) in the circumferential direction without play.
6. Wälzlager nach Anspruch 5 mit dem Merkmal: der Käfig (12) ist nach außen vorgespannt und drückt die Wälzkörper (8) gegen die Laufbahn (6) des Losrades (3). 6. Rolling bearing according to claim 5 with the feature: the cage ( 12 ) is biased outwards and presses the rolling elements ( 8 ) against the raceway ( 6 ) of the idler gear ( 3 ). 7. Wälzlager nach Anspruch 5 mit dem Merkmal: der Käfig (12) besteht aus Polyäthersulfon mit Glasfaser.7. Rolling bearing according to claim 5 with the feature: the cage ( 12 ) consists of polyether sulfone with glass fiber. 8. Wälzlager nach Anspruch 1 mit dem Merkmal: die Schutzschicht ist eine Chromschicht.8. Rolling bearing according to claim 1 with the feature: the protective layer is a chrome layer. 9. Wälzlager nach Anspruch 1 mit dem Merkmal: die Schutzschicht ist eine Tantalkarbidschicht.9. Rolling bearing according to claim 1 with the feature: the protective layer is a tantalum carbide layer.
DE4113526A 1991-04-25 1991-04-25 Roller bearing - has one or more working parts coated with hard corrosion resistant material, typically chrome or tantalum carbide Ceased DE4113526A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4113526A DE4113526A1 (en) 1991-04-25 1991-04-25 Roller bearing - has one or more working parts coated with hard corrosion resistant material, typically chrome or tantalum carbide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4113526A DE4113526A1 (en) 1991-04-25 1991-04-25 Roller bearing - has one or more working parts coated with hard corrosion resistant material, typically chrome or tantalum carbide

Publications (1)

Publication Number Publication Date
DE4113526A1 true DE4113526A1 (en) 1992-10-29

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DE4113526A Ceased DE4113526A1 (en) 1991-04-25 1991-04-25 Roller bearing - has one or more working parts coated with hard corrosion resistant material, typically chrome or tantalum carbide

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9408946U1 (en) * 1994-06-01 1994-07-28 INA Wälzlager Schaeffler KG, 91074 Herzogenaurach Gear change gear
DE19623525A1 (en) * 1996-06-13 1997-12-18 Schaeffler Waelzlager Kg Crankshaft mounted belt drive to ancillary plant
DE19644045A1 (en) * 1996-10-31 1998-05-14 Schaeffler Waelzlager Ohg Freewheel unit, particularly of clamp body and clamp roller type
DE19728919A1 (en) * 1997-07-07 1999-01-14 Schaeffler Waelzlager Ohg Gear change gear
EP1199484A3 (en) * 2000-10-20 2002-11-06 INA-Schaeffler KG Fan drive clutch with a floating ring roller bearing
DE10136372A1 (en) * 2001-07-26 2003-02-13 Ina Schaeffler Kg Losradlager
DE102004009472A1 (en) * 2004-02-27 2005-09-15 Daimlerchrysler Ag Motor vehicle's transmission has hardened needle rolling bodies which in relation to bearing bore in gearwheel have radial clearance of at least 5 per cent of needle rolling body's diameter
DE102008032027A1 (en) 2008-07-07 2010-01-21 Schaeffler Kg Bearing arrangement for use with device, has two-row roller bearing, where two rows of rollers are arranged in circumferential direction around rotation axis

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DE9408946U1 (en) * 1994-06-01 1994-07-28 INA Wälzlager Schaeffler KG, 91074 Herzogenaurach Gear change gear
DE19623525A1 (en) * 1996-06-13 1997-12-18 Schaeffler Waelzlager Kg Crankshaft mounted belt drive to ancillary plant
DE19644045A1 (en) * 1996-10-31 1998-05-14 Schaeffler Waelzlager Ohg Freewheel unit, particularly of clamp body and clamp roller type
DE19644045C2 (en) * 1996-10-31 2002-04-18 Ina Schaeffler Kg freewheel
DE19728919A1 (en) * 1997-07-07 1999-01-14 Schaeffler Waelzlager Ohg Gear change gear
WO1999002893A1 (en) * 1997-07-07 1999-01-21 INA Wälzlager Schaeffler oHG Toothed gear box
DE19728919B4 (en) * 1997-07-07 2005-12-01 Ina-Schaeffler Kg Gear shift transmission
EP1199484A3 (en) * 2000-10-20 2002-11-06 INA-Schaeffler KG Fan drive clutch with a floating ring roller bearing
DE10136372A1 (en) * 2001-07-26 2003-02-13 Ina Schaeffler Kg Losradlager
DE102004009472A1 (en) * 2004-02-27 2005-09-15 Daimlerchrysler Ag Motor vehicle's transmission has hardened needle rolling bodies which in relation to bearing bore in gearwheel have radial clearance of at least 5 per cent of needle rolling body's diameter
DE102008032027A1 (en) 2008-07-07 2010-01-21 Schaeffler Kg Bearing arrangement for use with device, has two-row roller bearing, where two rows of rollers are arranged in circumferential direction around rotation axis

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