DE2541466A1 - ROLLER BEARING - Google Patents

Description

PATENT AGENCIES ^ 5414p6

MANITZ, FINSTERWALD & GRÄMKOW

Munich, the Ϊ * SE '· Se / b - J) 2123

DUELOP LIMITED

Dunlop House, Eyder Street, St. James's, London S.V.1.

England

roller bearing

The invention relates to bearings and its main aim is to create a roller bearing that has self-lubricating properties and is capable of being installed in a high temperature environment.

In accordance with the invention, a structural carbon component for a rolling bearing assembly is provided.

Furthermore, according to the present invention, a rolling bearing is provided in which one or more components are made of Structural carbon "consist.

By "structural carbon" is meant a carbonaceous material in a solid form, such as solid graphite or a the carbon bandages, such as those used in aircraft brake discs be used. Under a "carbon yerba"

DR. C. MANITZ DIPL.-INO. M. FINSTERWALD DIP L.-ING. W. G R A M K O W ZENTRALKASSE BAYER. FOLK BANKS

β M0NCHBNS2. ROBERT-KOCH-STRASSE I 7 STUTTGART 50 (BAD CANNSTATT) MÖNCHEN. ACCOUNT NUMBER 7270

TEL. (089) 224211. TELEX 5-29672 PATMF SEELBERGSTR. 23/25. TEL. (0711) 56 72 61 POSTSCHECK ι MÖNCHEN 77062-80S

609816/0288

25AH66

material * becomes a solid one reinforced with carbon fibers Carbon material understood either by the multiple impregnation process or by the carbon vapor deposition process was produced. With the multiple impregnation process becomes a carbonizable textile or fabric substrate repeatedly impregnated with a resin, which is then carbonized. In the "carbon vapor deposition" process, carbon becomes deposited on a textile or fabric substrate by allowing a carbon-containing gas with the heated substrate under suitable temperature and pressure conditions in contact, causing a carbon deposition promote from the gas phase.

If the component is made of carbon composite material, then it can with its final lorm, or almost with its final! shape and requires little or no no subsequent processing. Alternatively, a solid carbon ingot can be machined to the desired shape to win.

In execution forms in which the component is an annular Bearing race or race ring or cage made of fiber reinforced Is carbon composite material, at least some of the reinforcing fibers preferably extend circumferentially around the raceway or cage. The component can be produced in a suitable manner by the method described in HD-PS 25 20 406.2 is described in accordance with GB-PS 20 218/74.

Furthermore, according to the invention, a roller bearing assembly is created in which at least one of the inner or outer running rims baw. Iffiuf | fift ^ dfr assembly sin an annular element made of structural carbonff ^ ff iffc In a preferred embodiment according to the invention, a Wadel roller bearing assembly comprises an annular inner Lpifkranz or race made of structural carbon,

8Q981S / 0288

254H66

_ 3 -

which has integral end flanges that are also made from structural carbon consist of at least one cage-needle assembly that holds the inner raceway between the end flanges and an annular outer structural carbon race that supports the cage and needle assembly surrounds.

The invention is described below, for example, with reference to the drawing; in this the only figure shows one partial axial elevation of a needle bearing assembly according to the invention.

The needle assembly 10 includes an annular inner race 11 and an annular outer raceway 12. Both raceways are made of carbon composite material and are according to using the procedure of DT-PS 25 20 4-Q6.2. According to this Method extends the thread-like reinforcement or reinforcement of each bearing element 11 and 12 in the circumferential direction of the element and was wound onto a spindle (for the manufacture of the element).

The inner race 11 is integral with end flanges 13 and 14 formed, between which two metal cages 15 and 17 are arranged side by side, each of which has steel needles 16 and 18 in circumferential spaced position around the inner race ring / holds.

The needle and cage assemblies are of one well known per se

The illustrated needle assembly is suitable for use in high temperature environments, such as at an air motor propelled by hot air from an aircraft engine is derived, whereby it works better than a needle roller bearing that has inner and outer metal races, as they have been used up to now. The rims 11 and 12 made of structural carbon are not subject to any expansion or contraction and other changes such as those caused in metal by high temperatures.

609816/0288

254H66

So far, the lubrication of bearings has to deal with high temperatures are exposed, causes serious difficulties, since a ",." _,. ", becomes too viscous .will and

Lubricant fluxd either burns or / tends to volatilize, whereby it causes the camp to "stall" or "eat up".

In alternative embodiments of the invention, the inner and outer races and the rolling elements of a ball or rolling bearing assembly are made of metal and the cages (only these), which are arranged between the races, can be made of structural carbon, or both the cages as the balls or rolling elements that are fitted in them can also consist of structural carbon. In another embodiment can all elements of a rolling bearing assembly, namely the two races, the cages and the balls or rolling elements consist of structural carbon.

- patent claims -

009816/0288

Claims (4)

Patents M./wälzlager, the annular inner and outer races or Includes running rims, between which an annular cage is arranged, wherein a plurality of roller elements in corresponding openings in the cage with mutual spacing is arranged circumferentially around the cage, so that each Välzelement in rolling contact with one radially outer surface of the inner race and one radially inner surface of the outer race is, and wherein devices are further provided that a prevent axial displacement of the cage and the rolling elements from their position between the races, thereby gekennzei chnet that one or more elements of the race rings, the cage and the Välzelemente formed component group consist of carbonaceous material in solid form. 2. Rolling bearing according to claim 1, characterized in that that one or more elements of the component group formed from the raceways, the cage and the rolling elements consist of carbon composite material. 3. Rolling bearing according to claim 2, characterized in that that one or more elements from the component group formed by the races and the cage Carbon composite material are made by vapor deposition of carbon on a substrate made of twisted or wound threads, from which the most in the circumferential direction of the race or the cage extend. 609816/0288 254U66 4. Rolling bearing according to claim 1, characterized gekennzei c h n e t that one or more elements of the component group formed by the raceways, the cage and the rolling elements consist of solid graphite. € 09816/0288