CN201232706Y

CN201232706Y - Loose rib cam follower needle roller bearing

Info

Publication number: CN201232706Y
Application number: CNU2008200345952U
Authority: CN
Inventors: 陈亚林
Original assignee: JIANGSU CCVI BEARING CO Ltd
Current assignee: JIANGSU CCVI BEARING CO Ltd
Priority date: 2008-04-28
Filing date: 2008-04-28
Publication date: 2009-05-06
Anticipated expiration: 2018-04-28

Abstract

The utility model discloses a needle roller bearing which includes an outer ring of the bearing, an inner ring of the bearing, a plurality of needle rollers, two sealing elements and two flat check rings. The two ends of the outer ring of the bearing are provided with counter bores; two seal rings are respectively arranged on the outer periphery of the flat check rings; the inner holes of the two flat check rings are respectively matched with the outer diameters of the two spigot rings of the inner ring of the bearing in a transition way; 4 to 8 riveting points are respectively arranged on the matching location between the spigot rings at the two ends of the inner ring of the bearing and the inner holes of the flat check rings. The needle roller bearing solves the problems that the whole set of the existing needle roller bearing is easy to fall apart when being impacted caused by the insecure connection between the flat check rings and the inner ring of the bearing only through fit clearance, and improves the capacity of the bearing for bearing coaxial force.

Description

The loose rib outer ring and roll assembly

Technical field

The utility model relates to a kind of bearing, and particularly a kind of outer ring and roll assembly that is used for rectilinear orbit belongs to technical field of bearings.

Background technique

The loose rib outer ring and roll assembly is usually used in rectilinear orbit, and loose rib can prevent that dust and foreign matter from entering bearing race, prolongs the working life of bearing.Existing loose rib needle roller roller bearing makes the loose rib of bearing both sides and bearing inner race be connected to become integral body by the interference fit between back-up ring endoporus and the bearing inner race cylindrical.This bearing can bear a spot of thrust load, the size that it can bear thrust load power depends on the combination force that interference fit produces between loose rib and the bearing inner race, still, if combination force is excessive, may cause the internal diameter of bearing inner race to dwindle, thereby cause the endoporus off-dimension of needle bearing.The loose rib of this bearing is very insecure with being connected of bearing inner race, in the carrying of bearing, transportation process, if be subjected to excessive impact, the back-up ring of bearing breaks away from bearing inner race easily, when being assembled to this bearing on the equipment, if be subjected to impulsive load, also can cause a whole set of bearing to fall apart, bring very big inconvenience for carrying, transportation and the installation of loose rib outer ring and roll assembly.

The model utility content

In order to solve existing loose rib outer ring and roll assembly in carrying, transportation and installation process, if be subjected to excessive impact, the problem that a whole set of bearing falls apart easily the utility model proposes a kind of loose rib outer ring and roll assembly, also can not fall apart if this bearing is subjected to impacting.

The purpose of this utility model is achieved by the following technical programs.

A kind of loose rib outer ring and roll assembly comprises bearing outer ring, bearing inner race, seal ring, needle roller, loose rib; The axial two ends of described bearing outer ring are respectively arranged with counterbore, and the two ends of described bearing inner race are respectively arranged with the seam circle, and described loose rib is separately positioned in the counterbore at bearing outer ring two ends, and described seal ring is separately positioned on the outer circumferential face of loose rib; The endoporus of described loose rib respectively with the seam circle transition fit at bearing inner race two ends; In the cooperation place of the seam circle and the loose rib endoporus at bearing inner race two ends, uniform 4～8 riveted points respectively.

Aforesaid loose rib outer ring and roll assembly, the raceway localized quench hardening hardness range of wherein said bearing inner race is HRc58～64.

Aforesaid loose rib outer ring and roll assembly, the hardness range of wherein said bearing inner race remaining part are HRc17～24.

The endoporus that the utility model adopts loose rib earlier respectively with the seam circle transition fit at bearing inner race two ends, then in the cooperation place of the seam circle and the back-up ring endoporus at bearing inner race two ends, stamp 4～8 riveted points respectively, strut the seam circle, loose rib and bearing inner race riveted are linked into an integrated entity.This structure had both improved the ability that the utility model bears axial force, avoided existing outer ring and roll assembly again because the interference fit between the cylindrical of loose rib endoporus and bearing inner race, cause the internal diameter of bearing inner race to dwindle, thereby cause the out-of-size disadvantage of endoporus of needle bearing; Also solved existing outer ring and roll assembly because to only depend on interference fit to be connected between loose rib and the bearing inner race insecure, in case run into impact, the problem that a whole set of bearing falls apart has easily improved the ability that bearing bears axial force.

Advantage of the present utility model and characteristics will illustrate by the non-limitative illustration of following preferred embodiment and explain that these embodiments only provide as an example with reference to accompanying drawing.

Description of drawings

Fig. 1 is an axial sectional view of the present utility model.

Fig. 2 is the left view of Fig. 1.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As shown in Figure 1, outer ring and roll assembly of the present utility model, by bearing outer ring 1, bearing inner race 2, two

Sealings

31,32, several needle rollers 4, two

loose ribs

51,52 constitute.The two ends of bearing outer ring 1 are respectively equipped with counterbore 11,12, the two ends of bearing inner race 2 are respectively arranged with

seam circle

21,22,

loose rib

51,52 is separately positioned in the counterbore 11,12 at bearing outer ring 1 two ends, and

seal ring

31,32 is separately positioned on the outer circumferential face of loose rib 51,52.The endoporus of

loose rib

51,52 respectively with

seam circle

21,22 transition fit at bearing inner race 2 two ends.Cooperation place at the

seam circle

21,22 and

loose rib

51,52 endoporus at bearing inner race 2 two ends, uniform 4～8 the riveted points 6 of difference, strutted

seam circle

21,22, make the external diameter of

seam circle

21,22 and the endoporus of

loose rib

51,52 form staggered being connected, this connection is more firm than the connection of unthreaded hole optical axis, makes bearing can bear bigger axial force.

In order riveting to

open seam circle

21,22, bearing inner race 2 is except that raceway 23, and the hardness range of remaining part is HRc17～24.The raceway 23 localized quench hardening hardness ranges of bearing inner race 2 are HRc58～64, make raceway 23 more durable, have prolonged the working life of bearing.

In addition to the implementation, the utility model can also have other mode of executions, and all employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.

Claims

1. a loose rib outer ring and roll assembly comprises bearing outer ring (1), bearing inner race (2), seal ring (31), (32), needle roller (4), loose rib (51), (52); The axial two ends of described bearing outer ring (1) are respectively arranged with counterbore (11), (12), the two ends of described bearing inner race (2) are respectively arranged with seam circle (21), (22), and described loose rib (51), (52) are separately positioned in the counterbore (11), (12) at bearing outer ring (1) two ends; It is characterized in that described seal ring (31), (32) are separately positioned on the outer circumferential face of loose rib (51), (52); The endoporus of described loose rib (51), (52) respectively with seam circle (21), (22) transition fit at bearing inner race (2) two ends; At seam circle (21), (22) and the loose rib (51) at bearing inner race (2) two ends, the cooperation place of (52) endoporus, uniform 4～8 riveted points (6) respectively.

2. loose rib outer ring and roll assembly according to claim 1 is characterized in that, raceway (23) the localized quench hardening hardness range of described bearing inner race (2) is HRc58～64.

3. loose rib outer ring and roll assembly according to claim 1 is characterized in that, the hardness range of described bearing inner race (2) remaining part is HRc17～24.