CN202484080U

CN202484080U - Double-raceway angular contact bearing

Info

Publication number: CN202484080U
Application number: CN2012200101600U
Authority: CN
Inventors: 杨金良
Original assignee: NINGBO YINZHOU JINXIN BEARING HARDWARE CO Ltd
Current assignee: NINGBO YINZHOU JINXIN BEARING HARDWARE CO Ltd
Priority date: 2012-01-11
Filing date: 2012-01-11
Publication date: 2012-10-10
Anticipated expiration: 2022-01-11

Abstract

The utility model discloses a double-raceway angular contact bearing. The double-raceway angular contact bearing comprises an inner ring and an outer ring which is sleeved outside of the inner ring, wherein raceways are arranged between the inner ring and the outer ring, rollable rolling balls are arranged inside the raceways, the raceways are mutual-paralleled double raceways, each raceway is provided with rolling balls capable of rolling, outboards of the double-raceways are provided with retainers respectively, and the retainers are provided with dust proof covers. The rolling balls of the double-raceway angular contact bearing have a large degree of freedom in the raceways. The double-raceway angular contact bearing has a longer service life than an existing single-raceway angular contact bearing and has a less fictional force than the existing double-raceway angular contact bearing. The retainers are arranged on the outboards of the double-raceways to prevent the balls from running out and enable the balls to be evenly spaced. Moreover, the retainers are provided with the dust proof covers to prevent dust from going into the bearing easily and guarantee the normal running of the bearing.

Description

Two raceway angular contact bearings

Technical field

The utility model relates to a kind of mechanical fitting, especially a kind of angular contact ball bearing.

Background technique

Existing bearing is generally single raceway; Ball is easy abrasion in raceway, and the bearing of some two balls is arranged, but general ball all is to be embedded in the retainer; When having dirt to invade in the retainer; Rolling to ball can produce bigger influence, the rotation of bearing is had some setbacks or aggravates the wearing and tearing of bearing, thereby shorten the working life of bearing.

Summary of the invention

The utility model proposes a kind of pair of raceway angular contact bearing, and this bearing comprises the outer ring that inner ring is outer with being placed in said inner ring, is provided with raceway between said inner ring and the outer ring, is provided with rotatable ball in the said raceway; Said raceway is the two raceways that are parallel to each other, and is provided with rotatable ball in each raceway; The outside of said pair of raceway is respectively arranged with retainer, and said retainer is outside equipped with dust cover.

The ball of the utility model has bigger degrees of freedom in raceway, the more existing single race bearing life-span is longer, and the frictional force of more existing pair of ball bearing is littler; Through both sides external retainer is set ball can not run out of, the space between the ball is equated at raceway; And dust cover is arranged in the retainer outer installment, and make dust be not easy to get in the bearing, ensured the normal operation of bearing.

Preferably, the end face of said retainer one end is an annulus, and the end face of the other end offers some pockets hole, and said ball places in the said pocket hole.Said retainer be an end of annulus towards the outside of bearing, an end that offers the pocket hole so that ball is covered, makes its location towards the inner ball of bearing.

The double ball of the utility model rotates in two raceways, does not directly contact with the external world, has prolonged working life; Simultaneously, have dust cover, encapsulation is better, and the working environment of bearing is stable; Also can bear stressed from axially or radially simultaneously.

Description of drawings

Accompanying drawing 1 is the package assembly sectional view of the utility model preferred embodiment;

Accompanying drawing 2 is the disassemblying structure schematic representation of the utility model preferred embodiment;

Label declaration: inner ring 1, outer ring 2,

ball

31,32,

retainer

41,42, pocket hole 411, dust cover 5, collar 6.

Embodiment

Below in conjunction with preferred embodiment shown in the drawings the utility model is done further explanation.

As shown in Figure 1, two raceway angular contact bearings of the utility model comprise inner ring 1, on inner ring 1, are with outer ring 2, are provided with raceway between inner ring 1 and the outer ring 2.This raceway is formed by the scrobicular ring on scrobicular ring on inner ring 1 outer wall and outer ring 2 inwalls.Said raceway is the two raceways that are parallel to each other, and is provided with rotatable ball 3 in each raceway.The outside of said pair of raceway is respectively arranged with retainer 41 and retainer 42, so that ball 3 remains between inner ring 1 and the outer ring 2, is outside equipped with dust cover 5 at

retainer

41,42.

Two row's balls 3 roll in two raceways, and two rows do not have other parts between the balls 3, only at the arranged outside

retainer

41,42 of ball 3.The end face of one end of

retainer

41,42 is an annulus, and this end face is towards the outside of bearing; The end face of the other end offers some pockets hole 411,421, and when retainer 41 and retainer 42 are buckled in 3 last times of ball, ball 3 just in time is positioned at pocket hole 411,421.The positioning of ball 3 has been limited in pocket hole 411,421 on the one hand, does not influence the rotation of ball 3 on the other hand again, even bearing has less frictional force when rotating, make again ball 3 can be owing to unbalance stress the uneven phenomenon of origination interval.

In this preferred embodiment,

retainer

41,42 is a nylon cages, and offers seven pocket holes 411,421 on its each.Radial internal clearance between ball 3 and the raceway is 6um-13um, and the position of both having limited ball 3 can guarantee freely rolling of ball 3 again.

The bearing outer ring 2 of the utility model is provided with draw-in groove, and said dust cover 5 is placed on the inner ring 1, and is stuck in the said draw-in groove, and it is tightr that dust cover 5 is combined with the end face of bearing, prevents that dust from getting into.Outside at dust cover 5 also is provided with collar 6, and said collar 6 is stuck between the draw-in groove of dust cover 5 and outer ring 2, guarantees that further dust cover 5 contacts with the densification of bearing.

Last institute should be noted that; Above embodiment is only in order to the technological scheme of explanation the utility model but not to the restriction of the utility model protection domain; Although the utility model has been done detailed description with reference to preferred embodiment; Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technological scheme of the utility model, and do not break away from the essence and the scope of the utility model technological scheme.

Claims

1. a two raceway angular contact bearing comprises the outer ring that inner ring is outer with being placed in said inner ring, is provided with raceway between said inner ring and the outer ring, is provided with rotatable ball in the said raceway; It is characterized in that: said raceway is the two raceways that are parallel to each other, and is provided with rotatable ball in each raceway; The outside of said pair of raceway is respectively arranged with retainer, and said retainer is outside equipped with dust cover.

2. as claimed in claim 1 pair of raceway angular contact bearing is characterized in that: the end face of said retainer one end is an annulus, and the end face of the other end offers some pockets hole, and said ball places in the said pocket hole.

3. as claimed in claim 2 pair of raceway angular contact bearing is characterized in that: offer seven pocket holes on the said retainer.

4. as claimed in claim 1 pair of raceway angular contact bearing, it is characterized in that: said outer ring is provided with draw-in groove, and said dust cover is placed on the said inner ring, and is stuck in the said draw-in groove.

5. as claimed in claim 4 pair of raceway angular contact bearing is characterized in that: said dust cover outer installment has collar, and said collar is stuck between the draw-in groove of said dust cover and outer ring.

6. like the arbitrary described pair of raceway angular contact bearing of claim 1-5, it is characterized in that: said retainer is a nylon cages.

7. like the arbitrary described pair of raceway angular contact bearing of claim 1-5, it is characterized in that: the radial internal clearance between said ball and the raceway is 6um-13um.