CN205559556U

CN205559556U - 4 angular contact ball bearing

Info

Publication number: CN205559556U
Application number: CN201620309735.7U
Authority: CN
Inventors: 戴学利; 王苏平; 周振涛; 牛建平; 杜德友
Original assignee: Zhejiang Bahuan Bearing Co Ltd
Current assignee: Bahuan Technology Group Co., Ltd
Priority date: 2016-04-14
Filing date: 2016-04-14
Publication date: 2016-09-07
Anticipated expiration: 2026-04-14

Abstract

The utility model relates to a machine part, the especially 4 angular contact ball bearing that can bear two -way axial load. This 4 angular contact ball bearing includes bearing inner race, bearing inner race, rolling element, holder and shield, has seted up the outer lane step on this bearing inner race, and the bearing inner race and the bearing inner race homogeneous body constitute. The utility model has the characteristics of rational in infrastructure, it is more convenient that the installation is dismantled, and axial positioning is accurate, can the self -lubricating, maintain that the maintenance is convenient, and radial bearing capacity is great etc.

Description

4 angular contact ball bearings

Technical field

This utility model relates to a kind of machine components, a kind of 4 angular contact ball bearings bearing bi-directional axial load.

Background technology

Bearing is a kind of important spare part in plant equipment in the present age.Its major function is to support machinery rotary body, reduces the coefficient of friction in its motor process, and ensures its rotating accuracy.Four-point contact ball, is a kind of a set of bearing angular contact ball bearing that can bear bi-directional axial load.Two-row ball bearing also can bear two-way axial load, and four-point contact ball compares with two-row ball bearing, the axial space taken can significantly reduce, so, in the compact occasion bearing bi-directional axial load again of some axial arrangement, four-point contact ball is used a lot.The patent documentation of Publication No. CN104033489A discloses a kind of four spot contact bearings and completely fills spherical structure, and its bearing capacity is relatively big, but owing to its outer ring, inner ring structure part are more, installing/dismounting is complicated, brings more inconvenience to use.The patent documentation separately having Publication No. CN103790933A discloses another kind of four-point contact ball, and this bearing has left and right two semi outer rings to be limited in retainer by spherical roller, and spherical roller and bearing inner race have contacted with each other four contact points, and contact angle is 35 °.This bearing can bear the load in any one direction axially and radially, but complexity is installed in its outer ring, and owing to outer ring structure is made up of two halves, lubricating oil in internal oil sump is as easy as rolling off a log to be spilt, and reduces the service life of bearing.

Summary of the invention

This utility model is inconvenient mainly for the installing/dismounting existing for prior art, lacks the technical problems such as axially location, maintaining inconvenience, there is provided a kind of rational in infrastructure, installing/dismounting is more convenient, axial registration, convenient 4 angular contact ball bearings of maintaining.

For achieving the above object, this utility model adopts the technical scheme that

4 angular contact ball bearings include bearing outer ring, bearing inner race, rolling element, retainer and dust cap, in rolling element is arranged on the raceway of bearing outer ring and bearing inner race and roll, rolling element is uniformly separated by retainer, first curvature and the first radian it is respectively equipped with on the raceway of bearing outer ring and bearing inner race, the surface of rolling element is provided with torsion and the second radian, first curvature is more than torsion, and the first radian is more than the second radian, and bearing outer ring offers outer ring step.The raceway of bearing outer ring and bearing inner race can be the cross section of Fructus Persicae type, it is also possible to be oval cross section, or other are with the cross section of radian.When no-load or purely radial load effect, rolling element and bearing outer ring, bearing inner race are rendered as four point cantact；When the most purely axial load effect, rolling element has just become two-point contact with bearing outer ring, bearing inner race, can bear two-way axial load.Outer ring step on bearing outer ring can effectively eliminate the play that end-play deviation is brought.

As preferably, bearing outer ring and bearing inner race are each integrally formed.Make the bearing inner race two half hitches structure that conventional 4 angular contact ball bearings use into overall structure, mount and dismount more convenient.

As preferably, rolling element raceway with bearing outer ring, bearing inner race respectively contacts with each other, and contact point is at four contact angles of radially formation of ball bearing, and four contact angles are 25 °.Under normal circumstances, the angular range of contact angle, between 0 ° 90 °, selects contact angle to be 25 ° and bears bigger radial force than other angles, and also can bear certain axial force simultaneously.

As preferably, it is filled with grease between bearing outer ring and bearing inner race, and is provided with dust cap.When bearing uses grease lubrication, dust cap can ensure that bearing is the most non-maintaining, it is possible to decrease the operating environment requirements of bearing.

As preferably, the size of outer ring step height and width is equal, and two end face angles of outer ring step are right angle.The angle of two end face angles of outer ring step freely can be chosen between 0 ° to 90 °, when eliminating the play that end-play deviation is brought, is excellent with right angle.Acute angle the most easily weares and teares and affects precision.The size of outer ring step height and width also can freely be chosen, equal sized for optimum with height and width.

As preferably, bearing outer ring and bearing inner race are equipped with oil groove.Grease can be stored in oil groove, bearing can be carried out self-lubricating.The easy sequence of sanqu songs within a particular musical mode of the bearing of Internal and external cycle two half hitches structure under normal circumstances, installing/dismounting is inconvenient, after especially offering oil groove inside Internal and external cycle, two half hitches structure bearing in use between slightly long after easily produce lubrication groove leakage phenomenon.Use bearing outer ring instead and after bearing inner race is each integrally formed structure, oil groove is enclosed in bearing, it is to avoid leakage phenomenon.

The features such as therefore, this utility model has rational in infrastructure, and installing/dismounting is more convenient, axial registration, and maintaining is convenient, it is possible to self-lubricating, and radially bearing capacity is bigger.

Accompanying drawing explanation

Fig. 1 is overall structure schematic diagram of the present utility model.

Description of reference numerals: 1-bearing outer ring, 2-bearing inner race, 3-rolling element, 4-outer ring step, 5-retainer, 6-oil groove, 7-dust cap.

Detailed description of the invention

In order to be further appreciated by this utility model, below in conjunction with embodiment, this utility model preferred embodiment is described, it is understood that these describe simply as to further illustrate feature and advantage of the present utility model rather than the restriction to this utility model claim.

This utility model provides a kind of 4 angular contact ball bearings, as shown in Figure 1, bearing outer ring 1 and bearing inner race 2 are integrally manufactured by austenitic stainless steel, and rolling element 3 is coated on wherein by bearing outer ring 1 and bearing inner race 2, and rolling element 3 is uniformly separated by retainer 5.Bearing outer ring 1 becomes arc-shaped, rolling element 3 to be made up of steel ball with the raceway of bearing inner race 2, and the curvature of steel ball surface is less than the curvature of raceway, the radian of steel ball surface is less than the radian of raceway, steel ball and raceway have four contact points, and form four contact angles, and the angle of four contact angles is equal is 25 °.When these 4 angular contact ball bearing no-loads or when bearing purely radial load effect, rolling element and bearing outer ring, bearing inner race are rendered as four point cantact；When bearing purely axial load effect, rolling element has just become two-point contact with bearing outer ring, bearing inner race, can bear two-way axial load.

Having one outer ring step 4 on the outer surface of bearing outer ring 1, two end faces of outer ring step 4 are orthogonal, and the size of the height and width of the formed end face of outer ring step 4 is equal.4 axial positioning actions of outer ring step, less demanding to bearing axial play, can effectively eliminate the play that end-play deviation is brought.The middle part of bearing outer ring 1 and bearing inner race 2 respectively has an oil groove 6, and the opening of oil groove 6 is relative up and down, and contacts with each other with the surface of rolling element 3.Oil groove 6, built with lubricating oil, can carry out self-lubricating when bearing working to bearing.A pair dust cap 7 is installed between bearing outer ring 1 and bearing inner race 2, the two ends of dust cap 7 respectively with bearing outer ring 1, bearing inner race 2 encapsulation process.Bearing is closed by dust cap 7, and reducing bearing is affected by working environment, increases bearing service life.

The explanation of above example is only intended to help to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; on the premise of without departing from this utility model principle, it is also possible to this utility model is carried out some improvement and modification, these improve and modification also falls in this utility model scope of the claims.

Claims

1. 4 angular contact ball bearings, including bearing outer ring (1), bearing inner race (2), rolling element (3), retainer (5) and dust cap (7), it is characterized in that: in described rolling element (3) is arranged on the raceway of bearing outer ring (1) and bearing inner race (2) and roll, rolling element (3) is uniformly separated by retainer (5), first curvature and the first radian it is respectively equipped with on the raceway of bearing outer ring (1) and bearing inner race (2), the surface of rolling element (3) is provided with torsion and the second radian, first curvature is more than torsion, first radian is more than the second radian, outer ring step (4) is offered on bearing outer ring (1).

4 angular contact ball bearings the most according to claim 1, it is characterised in that: described bearing outer ring (1) and bearing inner race (2) are each integrally formed.

4 angular contact ball bearings the most according to claim 1 and 2, it is characterized in that: described rolling element (3) raceway with bearing outer ring (1), bearing inner race (2) respectively contacts with each other, contact point is at four contact angles of radially formation of ball bearing, and four contact angles are 25 °.

4 angular contact ball bearings the most according to claim 1 and 2, it is characterised in that: it is filled with grease between described bearing outer ring (1) and bearing inner race (2), and is provided with dust cap (7).

4 angular contact ball bearings the most according to claim 1 and 2, it is characterised in that: the size of described outer ring step (4) height and width is equal, and two end face angles of outer ring step (4) are right angle.

4 angular contact ball bearings the most according to claim 1 and 2, it is characterised in that: it is equipped with oil groove (6) on described bearing outer ring (1) and bearing inner race (2).