CN2921046Y

CN2921046Y - Roller bearing with special sealing structure

Info

Publication number: CN2921046Y
Application number: CN 200620043946
Authority: CN
Inventors: 郭长建; 吴道年; 徐华军
Original assignee: SHANGHAI BAIXIN AXLETREE CO Ltd
Current assignee: SHANGHAI BAIXIN AXLETREE CO Ltd
Priority date: 2006-07-14
Filing date: 2006-07-14
Publication date: 2007-07-11
Anticipated expiration: 2016-07-14

Abstract

The utility model relates to a roller bearing with a specific sealed structure, including an inner ring, an outer ring, a needle roller and a cage, which is characterized in that the two sides of the inner ring have fixed grooves, a seal ring embeds inside the fixed groove, two seal lips are arranged at the top of the seal ring, inner seal lip contacts with the inner surface of the outer ring, outer seal lip has a clearance with the inner surface of the outer ring. The utility model has the advantages that it can prevent grease from leaking in the bearing, as well as preventing external impurity from entering inside the bearing and maintaining normal lubricating of the grease inside the bearing.

Description

A kind of roller bearing of special seal structure

Technical field

The utility model relates to a kind of roller bearing, particularly a kind of roller bearing of special seal structure.

Background technology

Traditional used roller bearing of frame is made of inner ring, outer ring and needle roller and retainer assembly at present, is marked with lubricant grease in bearing inside, and bearing seal is that the gap and the inner ring rib external diameter annular knurl of Internal and external cycle realized.But because the working environment of textile machine has a large amount of tiny yarn and dust, and roller bearing is exposed to be installed on the frame, therefore the gap location that on-stream a large amount of tiny yarn and dust can accumulate in the Internal and external cycle of bearing, and enter into that bearing is inner to mix stirring with lubricant grease, make deterioration of lubricant lose lubrication, cause bearing wear to be lost efficacy.

Summary of the invention

The purpose of this utility model is the problem that solves prior art middle roller bearing seal difference, and a kind of roller bearing of special seal structure is provided.The utility model designs a kind of roller bearing of special seal structure, comprise inner ring, outer ring and needle roller, retainer, it is characterized in that: on the inner ring both sides, holddown groove is arranged, be embedded with sealing ring at holddown groove, two sealing lips are arranged at the top of sealing ring, inboard sealing lip contacts with the medial surface of outer ring, and the sealing lip in the outside and the medial surface of outer ring are gapped.The utility model has the advantages that to prevent that grease is omitted in the bearing, can prevent that again foreign matter from entering bearing inside, keep the normal lubricated of the interior grease of bearing.

Description of drawings

Below in conjunction with drawings and Examples the utility model is elaborated,

Accompanying drawing 1 is a structural representation of the present utility model,

Accompanying drawing 2 is the local enlarged diagram among Fig. 1 of the present utility model,

The specific embodiment

Comprise inner ring 1, outer ring 2 and needle roller 3, retainer 4 among the figure, it is characterized in that: on inner ring 1 both sides, holddown groove 5 is arranged, be embedded with sealing ring 6 at holddown groove 5, the top of sealing ring 6 have two sealing lips 78, inboard sealing lip 7 contacts with the medial surface of outer ring 2, and the sealing lip 8 in the outside is gapped with the medial surface of outer ring 2.Return to mobile aspect the sealing 6 in bearing operation process middle (center) bearing internal grease, when grease accumulates in inboard sealing lip 7, because sealing lip 7 has proper angle to the inside, in the influence that adds upper bearing (metal) centrifugal force, the grease that accumulates on the sealing ring 6 is back in the race way again, internal grease flows in the inner running that forms a kind of order of bearing like this, add that in addition inner seal lip 7 has the suitable magnitude of interference to stop up outwards flowing of grease, the combination of this effect can avoid the bearing internal grease to leak into the bearing outside effectively.Outside sealing lip 8 has angle laterally, can will throw away bearing attached near the impurity the seal when bearing operation, plays the effect of continuous cleaning bearing sealing lip, avoids the continuous gathering of impurity at the seal place, has prevented that also impurity from entering bearing inside.

Claims

1, a kind of roller bearing of special seal structure, comprise inner ring, outer ring and needle roller, retainer, it is characterized in that: on the inner ring both sides, holddown groove is arranged, be embedded with sealing ring at holddown groove, two sealing lips are arranged at the top of sealing ring, inboard sealing lip contacts with the medial surface of outer ring, and the sealing lip in the outside and the medial surface of outer ring are gapped.