CN203035766U

CN203035766U - Two-lip sealing bearing

Info

Publication number: CN203035766U
Application number: CN 201220719749
Authority: CN
Inventors: 陆连运
Original assignee: CHANGZHOU WUJIN HUANYU BEARING CO LTD
Current assignee: CHANGZHOU WUJIN HUANYU BEARING CO LTD
Priority date: 2012-12-25
Filing date: 2012-12-25
Publication date: 2013-07-03
Anticipated expiration: 2022-12-25

Abstract

The utility model relates to a two-lip sealing bearing which comprises an outer bearing ring and an inner bearing ring. A steel ball and a sealing cover are arranged between the outer bearing ring and the inner bearing ring, two contact lips are arranged at the bottom of the sealing cover, contact closeness of the two contact lips and the inner bearing ring sequentially decreases from inside to outside, and the thickness of the contact lip on the outer side is larger than that of the contact lip on the inner side. The radial interference magnitude of the contact lips and the outer diameter surface of the inner bearing ring increases, and the contact lips and the outer diameter surface of the inner bearing ring are combined more closely, so that sealability of the sealing is improved, water vapor, dust, grass clippings and the like can be effectively prevented from entering the bearing during operation, abrasion of the bearing is reduced, and the service life of the bearing is prolonged; and the two-lip sealing structure is adopted, so that manufacturing cost is lower when compared with that of a three-lip structure.

Description

The bilabiate stuffing box bearing

Technical field

The utility model relates to a kind of bearing, especially a kind of bilabiate stuffing box bearing.

Background technique

The seal ring that carries on the existing bearing, have Sealing and skeleton, the interior Zhou Yousan of Sealing the identical contact lip of thickness that is arranged in parallel, contact with the outer diametric plane of bearing inner race, the monolateral magnitude of interference of the outer diametric plane of contact lip and bearing inner race is about 0.4mm, the skeleton outer side surface has the rib of positioning seals, its closing in diameter than the big 1.0mm of bearing inner race external diameter about, this structure makes the contact lip of Sealing and the magnitude of interference between the bearing inner race external diameter too small, skeleton is too much to the containing of Sealing, the elasticity deficiency of Sealing, cause the sealability of seal ring to reduce, influenced the lubrication effect of bearing, for being mixed with steam for a long time, dust, the bearing of working under the environment of grass bits, this sealing configuration form is just more inadequate, dusts etc. are easy to infiltrate bearing inside, trickle particle and lubricant grease are lumped together, have aggravated the wearing and tearing of bearing, finally cause the bearing shortening greatly in working life.

The model utility content

The technical problems to be solved in the utility model is: provide a kind of good seal performance and fabricating cost low bilabiate stuffing box bearing.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of bilabiate stuffing box bearing, comprise bearing outer ring and bearing inner race, be provided with steel ball between described bearing outer ring and the bearing inner race, be provided with sealing cover between described bearing outer ring and the bearing inner race, described sealing cover bottom has two contact lips, described two contact lips successively decrease successively from inside to outside with the closeness of contact of bearing inner race and the thickness that contacts lip in the outside greater than the thickness of interior side contacts lip.

Further, sealing cover described in the utility model is made up of rubber parts and skeleton, and described rubber parts and skeleton bond together.

Security when using in order to increase is fixed by Cock screw between inner ring described in the utility model and the workpiece.

The beneficial effects of the utility model are, solved the defective that exists in the background technique, the radial interference amount of Sealing contact lip and the outer diametric plane of bearing inner race strengthens, contact lip diametric plane outside bearing inner race is combined tighter, the thickening of contact lip thickness, itself and the outer diametric plane contact length of bearing inner race are lengthened, shorten the rib of skeleton, minimizing is to the containing amount of Sealing, strengthened the elasticity of Sealing, improved the sealability of bearing, can prevent effectively in the work that steam, dust, grass bits etc. from sneaking into bearing inside, reduce the wearing and tearing of bearing, prolong the operating life of bearing; And adopted the sealing configuration of bilabiate, made fabricating cost cheaper with respect to three lips.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the structural representation of preferred embodiment of the present utility model;

Among the figure: 1, bearing outer ring; 2, bearing inner race; 3, steel ball; 4, sealing cover; 5, contact lip; 41, rubber parts; 42, skeleton; 6, Cock screw.

Embodiment

With preferred embodiment the utility model is described in further detail by reference to the accompanying drawings now.These accompanying drawings are the schematic representation of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.

A kind of lip seal bearing as shown in Figure 1, comprise bearing outer ring 1 and bearing inner race 2, be provided with steel ball 3 between described bearing outer ring 1 and the bearing inner race 2, also be provided with sealing cover 4 between described bearing outer ring 1 and the bearing inner race 2, described sealing cover 4 bottoms have two contact lips 5, and described two contact lips 5 successively decrease from inside to outside successively with the closeness of contact of bearing inner race 2.

Sealing cover 4 described in the utility model is made up of rubber parts 41 and skeleton 42, and described rubber parts 41 and skeleton 42 bond together; The thickness of the contact lip in sealing cover 4 outsides is greater than the thickness of interior side contacts lip.Fixing by Cock screw 6 between inner ring 2 and the workpiece.

What describe in the above specification is embodiment of the present utility model, various not illustrating is construed as limiting flesh and blood of the present utility model, the person of an ordinary skill in the technical field after having read specification can to before described embodiment make an amendment or be out of shape, and do not deviate from essence and the scope of model utility.

Claims

1. bilabiate stuffing box bearing, comprise bearing outer ring (1) and bearing inner race (2), be provided with steel ball (3) between described bearing outer ring (1) and the bearing inner race (2), it is characterized in that: be provided with sealing cover (4) between described bearing outer ring (1) and the bearing inner race (2), described sealing cover (4) bottom has two contact lips (5), described two contact lips (5) successively decrease successively from inside to outside with the closeness of contact of bearing inner race (2) and the thickness that contacts lip in the outside greater than the thickness of interior side contacts lip.

2. bilabiate stuffing box bearing as claimed in claim 1, it is characterized in that: described sealing cover (4) is made up of rubber parts (41) and skeleton (42), and described rubber parts (41) and skeleton (42) bond together.

3. bilabiate stuffing box bearing as claimed in claim 1 is characterized in that: fixing by Cock screw (6) between described inner ring (2) and the workpiece.