Rolling bearing having two inner rings and a seal arrangement for sealing the parting joint between the inner rings

Abstract

The invention relates to a rolling bearing (1) having at least one outer ring (2) and one multi-part inner ring (3, 4), between which are arranged rolling bodies (5, 6), wherein two adjacent inner rings (3, 4) bear closely against one another with their axial end sides (25, 26) which point toward one another, and in which a sealing ring (12) is arranged in a common annular groove (16) of the inner rings (3, 4), which annular groove (16) is formed by means of indentations (14, 15) in the region of the end sides (25, 26), which point toward one another, of the inner rings (3, 4).; In order to realize a seal arrangement, which can be produced in a cost-effective and material-saving manner and provides a reliable sealing action, on said rolling bearing, the invention provides that the common annular groove (16), as viewed in cross section, has a greater axial length in the region of its base (13) than in the radially outer region.

Description

technical field [0001] The invention relates to a rolling bearing comprising at least one outer ring and a multi-part inner ring between which rolling bodies are arranged, wherein two adjoining inner rings are in close contact with each other with their mutually facing axial end faces close together, and a sealing ring is arranged in a common annular groove of the inner rings, which is formed by recesses in the region of the facing end faces of the inner rings. Background technique [0002] Such a rolling bearing is known, for example, from DE 199 35 014 A1. The rolling bearing is designed as a multi-row tapered roller bearing, wherein rolling elements are arranged between a plurality of inner rings and outer rings of the bearing. The tapered roller bearing has axially and radially acting seals, wherein the radially acting seal seals a gap between two inner rings which bear against each other with their end faces. [0003] In various exemplary embodiments, the sealing ring...

AI Technical Summary

Problems solved by technology

[0008] Those rolling bearings known hitherto which consist of two inner rings which abut one another tightly at the end faces have only insufficient sealing of the accommodation chambers for the rolling elements, so that lubricant may escape unintentionally from the rolling bearing or foreign substances may enter

In both cases, deterioration of rolling bearing characteristics and shortening of bearing life are expected

In some constructions, for example, there is insufficient relative axial clamping of the two inner rings, so that in the region of the boundary seam between their end faces, foreign substances may pass over the seals arranged there.

In some other forms of construction, the seal can be pressed against the inner ring sufficiently effectively for sealing purposes by means of a separate thin-plate ring or by means of a thin-plate ring added to its rubber material, and these seal rings are considered to be quite expensive

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