Axial bearing
AssigneeBorgWarner Inc.
InventorsPaul Krauss, Thomas Weinitschke, Helmut Eggert, Klaus Schappert, Norbert Stoll
Life of this patent
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Abstract
A thrust bearing, in particular for a turbo charger, has an essentially disc shaped bearing body (10) with a central through opening (12) for a shaft, at least one bearing surface (14) surrounding the through opening (12) for a collar which is placed on the shaft, and at least one oil supply channel which leads from a radially outer region of the bearing body to the through opening (12). In order to realize a cost effective manufacture of the thrust bearing it is proposed according to the invention that the at least one oil supply channel is designed to be a groove (16′).
Claims11
A thrust bearing for a turbocharger shaft having a collar, the thrust bearing comprising:
- an essentially disc shaped bearing body (10) with a central through opening (12) adapted to receive the shaft,
- at least one bearing surface (14) surrounding the through opening (12) adapted for the collar disposed on the shaft,
- an oil pocket (18) formed in the bearing body (10) extending concentrically with respect to the through opening (12) over part of the circumference of the bearing body (10), the oil pocket (18) being adapted to receive lubricating oil,
- at least one oil supply channel (16′) extending from the oil pocket (18) to the through opening (12), wherein the at least one oil supply channel is a groove (16′), and
- an oil drain groove (20) encircling the at least one bearing surface (14) and being concentric to the through opening (12), wherein an area of cross section of the oil supply channel (16′) is larger than an area of cross section of the oil drain groove (20).
A turbo charger comprising a thrust bearing having:
- an essentially disc shaped bearing body (10) with a central through opening (12) adapted for a shaft,
- at least one bearing surface (14) surrounding the through opening (12) adapted for a collar disposed on the shaft,
- an oil pocket (18) adapted to be subjected to lubricating oil and extending concentrically with respect to the through opening (12) over part of the circumference of the bearing body (10),
- at least one oil supply channel (16′) extending from the oil pocket (18) to the through opening (12), wherein the at least one oil supply channel is designed to be a groove (16′), and
- an oil drain groove (20) encircling the at least one bearing surface (14) and being concentric to the through opening (12), wherein an area of cross section of the oil supply channel (16′) is larger than an area of cross section of the oil drain groove (20).
Dependencies are inferred from the claim text.