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Raceway element for a large roller bearing and bearing assembly

A technology for rolling bearings and components, applied in the field of raceway components and bearing devices, can solve the problem of not being able to use large rolling bearings by known methods, and achieve the effect of less consumption

Active Publication Date: 2012-11-28
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here too, from an economic point of view, the known methods for induction hardening of surface layers cannot be transferred to large rolling bearings

Method used

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  • Raceway element for a large roller bearing and bearing assembly
  • Raceway element for a large roller bearing and bearing assembly
  • Raceway element for a large roller bearing and bearing assembly

Examples

Experimental program
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Embodiment Construction

[0019] According to one embodiment of the present invention, in figure 1 A large rolling bearing 1 with a diameter of at least 250 mm is described in . The large rolling bearing comprises two raceway elements designed as an outer ring 3 and an inner ring 5 . Rolling bodies designed as balls 7 are arranged between the raceway elements. When the two raceway elements move, a rolling movement of the ball 7 on the raceway elements results. Large rolling bearings are generally used in installations where the outer ring 3 is continuously rotating relative to the inner ring 5 or the inner ring is continuously rotating relative to the outer ring. This is the case, for example, in wind power plants.

[0020] exist figure 2 A section taken from the inner ring 5 is shown in . The inner ring 5 has a raceway 21 on which the balls 7 roll when the large rolling bearing 1 is in operation. The raceway 21 has a hardened surface layer which is able to withstand the loads imposed by the co...

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PUM

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Abstract

The invention relates to a roller bearing element for a large roller bearing comprising the following features: at least one contact zone with a mating roller bearing element, the contact zone has an inductively hardened surface layer, the roller bearing element is composed of a steel which has an admixture of carbon of at least 0.46% by mass.

Description

technical field [0001] The invention relates to a raceway element for a large rolling bearing and a bearing arrangement. Background technique [0002] In large rolling bearings known today, the raceway elements are generally made of carburized or through-hardened steel. When carburizing steels are used, the surface layers of low-alloy steels are carburized in a carbon environment so that the surface layers can be quenched afterwards. Due to the continuous load of the rolling elements running on the raceway elements, large rolling bearings require a high surface hardness in the raceway area in order to be able to guarantee a long service life. However, surface hardening or hardening of raceway elements is associated with higher energy consumption. [0003] In contrast, it is known in slewing bearings that a hardened surface layer is produced by means of induction. However, the requirements for surface hardness in such bearings are not as high as in large rolling bearings d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/64
CPCF16C19/163F16C2300/14F16C33/64F16C19/06F16C2360/31F16C2202/04F16C2204/64F16C2204/66Y02P10/25
Inventor B.梁U.梅G.瓦格纳C.伦佩尔
Owner AB SKF