Roller bearing for underwater applications

A technology for rolling bearings and bearings, which is applied in the direction of rolling contact bearings, rotating bearings, bearings, etc., which can solve the problems of difficult maintenance and replacement of bearings, and achieve weight saving, high rotation accuracy, and improved corrosion resistance.

Inactive Publication Date: 2011-06-01
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This additionally makes maintenance of the bearing and its replacement difficult when the bearing is no longer functional, for example due to corrosion

Method used

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  • Roller bearing for underwater applications
  • Roller bearing for underwater applications

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Embodiment Construction

[0017] The drawing shows a rolling bearing 2 which is used, for example, in underwater turbines. The bearing 2 comprises an outer ring 4 and an inner ring 6 which are arranged in a bearing housing 8 from which only a small section can be seen. The bearing rings 4 , 6 have a running surface 10 on which a plurality of rolling bodies 14 held in a cage 12 roll, the rolling bodies being arranged one behind the other in the circumferential direction. The spherical rolling bodies 14 roll around the axis of rotation A of the bearing 2 during bearing operation. Both the bearing rings 4 , 6 and the rolling elements 14 are made of a corrosion-resistant material, for example of stainless iron-chromium-molybdenum steel or of a ceramic material. Cage 12 is made of polyetheretherketone (PEEK) in this exemplary embodiment.

[0018] Due to the field of application of the rolling bearing 2 , the bearing housing is provided with openings (not further shown), so that the water used as cooling m...

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PUM

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Abstract

A roller bearing (2) for underwater applications, in particular for underwater turbines, comprises an outer ring (4) and an inner ring (6) arranged in a bearing housing (8) made from a a stainless material. Several roller bodies (14) held in a cage (12) are arranged between the bearing rings (4, 6) on corresponding roller tracks (10), mad from a corrosion-resistant material. In order to save weight for a roller bearing (2), the diameter (D) of which is, in particular between 0.2 and 10 m, at least one of the bearing rings (4, 6) is designed as bearing ring for a thin ring bearing.

Description

technical field [0001] The present application document relates to a rolling bearing for underwater applications, in particular in underwater turbines for generating electric current. Background technique [0002] Such rolling bearings are directly exposed to the surrounding medium, for example to water, where aggressive seawater causes corrosion. Against this background, such rolling bearings are made of corrosion-resistant materials, for example ceramic materials or special steels. Bearings for underwater turbines typically have a diameter between 1 and 10 m. This additionally makes maintenance of the bearing and its replacement difficult when the bearing is no longer functional, for example due to corrosion. Contents of the invention [0003] The object of the present invention is to propose an improved rolling bearing for underwater applications. [0004] This object is achieved according to the invention by a rolling bearing for underwater applications, which compr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/32F16C33/62F16C37/00
CPCF16C2300/14F16C37/007F16C33/62F16C33/32F16C19/163F16C33/58F16C2360/00F16C2240/70F16C2240/40
Inventor 爱德华·贝雷斯奇海因茨-迪特尔·施韦特费格尔
Owner SCHAEFFLER TECH AG & CO KG
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