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Electrically insulated rolling bearings

A rolling bearing, electrical insulation technology, applied in the direction of bearings, shafts and bearings, bearing components, etc., can solve the problems of expensive, easy to break the ceramic oxide layer, etc., achieve the effect of high service life, wide range of electrical and mechanical characteristic values

Active Publication Date: 2022-04-12
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, however, the layer application of thin layers of ceramic oxide on the rolling surfaces of the rolling elements is very expensive and the ceramic oxide layer is prone to fracture

Method used

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  • Electrically insulated rolling bearings
  • Electrically insulated rolling bearings

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Experimental program
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Effect test

Embodiment Construction

[0029] according to figure 1 , the electrically insulated rolling bearing 100 of the exemplary embodiment is configured as a radial bearing and essentially consists of an outer ring 1 , an inner ring 2 and rolling bodies 3 arranged therebetween, which are held in a cage 4 . Cage 4 is here made of a plastic material, while outer ring 1 , inner ring 2 and rolling elements 3 are made of tempered steel and are therefore electrically conductive depending on the material.

[0030] A first rolling element raceway surface 5 is formed on the inner peripheral side of the metal outer ring 1 . Correspondingly, a second rolling element raceway surface 6 is formed on the outer peripheral side of the inner ring 2 . The two rolling element raceways 5 and 6 are adapted to the shape of the rolling elements 3 , which are here designed as rollers.

[0031] In this embodiment, the insulating coating 7 described later (see also figure 2 ) is applied to the first rolling element raceway surface ...

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Abstract

The invention relates to an electrically insulating rolling bearing (100) for rotationally mounting a rotating component (11) relative to a carrier part (12), comprising a first rolling-element raceway surface (5) having an inner peripheral configuration The metal outer ring (1), the metal inner ring (2) with the second rolling element raceway surface (6) constructed on the outer peripheral side, a plurality of rolling arrangements arranged on the first and second rolling element raceway surfaces (5 , 6) between the metal rolling elements (3), and an insulating coating (7) applied at least partially on the outer ring (1) and / or inner ring (2) and / or on the rolling elements (3), the insulating coating The layer comprises at least one insulating layer (9) made of at least one non-conductive material, wherein the non-conductive material of the at least one insulating layer (9) is formed by metal oxynitride, so that the rotating component (11) and the bearing There is a resistance greater than 200 megohms between the components (12).

Description

technical field [0001] The invention relates to an electrically insulated rolling bearing for rotationally supporting a rotating component relative to a carrier part, which comprises a metal outer ring having a first rolling element raceway surface configured on the inner peripheral side, and a second rolling element raceway surface configured on the outer peripheral side. Metal inner ring of two rolling element raceway surfaces, a plurality of metal rolling elements rollingly arranged between the first and second rolling element raceway surfaces, and at least partially applied to the outer ring and / or the inner ring and / or the rolling elements An insulating coating on an insulating coating comprising at least one insulating layer composed of at least one non-conductive material. Background technique [0002] The field of use of the invention extends in particular to applications in which a rotating component, such as a shaft, is rotatably mounted relative to a carrier part,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/34F16C33/58F16C33/62
CPCF16C2240/60F16C33/34F16C33/585F16C33/62F16C2202/30F16C2240/40F16C2206/42F16C2206/02
Inventor 纳兹勒姆·巴格西万里卡多·恩里克·布鲁尼亚拉
Owner SCHAEFFLER TECH AG & CO KG
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