Rolling bearing having internal lubrication

Abstract

Rolling bearing having an inner ring (1) and an outer ring (2) with a row of rolling elements (3) held by a cage (4) between bearing races provided on the two rings, and an annular housing (5) surrounding one of said rings. Said ring forms with the housing at least one closed space (21a), (21b), inside which a lubricant is located.

Description

technical field [0001] The invention relates to rolling bearings, in particular rolling bearings having an inner ring and an outer ring and one or more rows of rolling elements held by cages between bearing raceways provided on the two rings. The rolling elements can be balls, for example. The rolling bearings may be, for example, rolling bearings used in industrial electric motors or motor vehicle gearboxes. In such applications, the bearings are primarily radially loaded, usually with relatively small loads compared to the capabilities of the bearings used. The rotational speed in such an application is of the order of 3000 rpm. In such applications, the service life of rolling bearings is essentially related to the lubrication of the bearings. Any defect in a lubricated bearing usually leads to rapid degradation and failure of the bearing. Background technique [0002] Traditionally, deep groove rolling bearings with a single row of balls have seals or sealing flanges...

AI Technical Summary

Problems solved by technology

None of these known structures allow satisfactory lubrication of the rolling parts in a really efficient and economical way

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