Three-lip sealed bearing with protective ring

Abstract

A three-lip sealed bearing with protective ring comprises an inner ring, an outer ring and a ball arranged between the inner ring and the outer ring. The inner ring extends from a left side and a right side of the outer ring along an axial direction; the inner surfaces at a left side and a right side of the outer ring along an axial direction are respectively provided with a riveting groove; a dust cover is fixedly arranged in the riveting groove; and the dust cover is provided with a three-lip sealing element sealed and against an outer surface of the inner ring. The bearing is characterized in that protective rings are respectively fixedly arranged on the outer surface of the inner ring and on the positions close to the left and the right side of the outer ring; a small space is kept between the protective ring, and the left side face and the right side face of the outer ring; and the protective ring, the dust cover and the three-lip sealing element together form a labyrinth combined seal structure. The invention can effectively protect the bearing sealing element, prolong the seal life, and enhance the sealing and dustproof effect.

Description

Technical field: [0001] The invention relates to a three-lip seal bearing with a protective retaining ring. Background technique: [0002] Some mechanical equipment, such as mining, petroleum, logging machinery, etc., have a very harsh working environment, and their working parts often need to operate under conditions full of mud, dust, and gravel. The sealing performance of the configured bearings directly affects the quality of the supporting host and longevity. In such application conditions, bearings with a three-lip seal structure with good dust-proof effect are often used. The existing bearing with a three-lip seal structure has better waterproof and dustproof effects. However, external granular media such as sand and gravel will directly sputter, hit the dust cover and accumulate at the inner lip of the three-lip seal, causing wear to the exposed inner lip and affecting its sealing and dustproof effect. Invention content: [0003] The purpose of the present inven...

AI Technical Summary

Problems solved by technology

However, external granular media such as sand, gravel, etc. will directly sputter, hit the dust cover and accumulate at the inner lip of the three-lip seal, causing wear to the exposed inner lip and affecting its sealing and dustproof effect.

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