CN201786934U

CN201786934U - Bearing outer ring

Info

Publication number: CN201786934U
Application number: CN2010202637473U
Authority: CN
Inventors: 严烈平; 王修军; 岑伟; 严烈忠
Original assignee: NINGBO MOGEN BEARING CO Ltd
Current assignee: NINGBO MOGEN BEARING CO Ltd
Priority date: 2010-07-19
Filing date: 2010-07-19
Publication date: 2011-04-06
Anticipated expiration: 2020-07-19

Abstract

The utility model discloses a bearing outer ring, which comprises a tubular ring body, wherein round angles are formed at two end hole opening parts of a shaft hole in the ring body, an annular outer ring groove is arranged on the inner wall of the shaft hole of the ring body in the direction along the axial lead of the shaft hole, and the groove curvature R of the outer ring groove is 2.20+/-0.02mm. Through changing the groove curvature of the bearing outer ring, i.e. the groove curvature R of the outer ring is changed from 2.08+/-0.02mm to 2.20+/-0.02mm, and the curvature factor of the bearing outer ring groove can be increased (i.e. the bending degree of the outer ring groove is large), so the deflection flexibility of the bearing in the use process is enhanced, and good work state can also be maintained even under the condition of poor lubrication condition. Meanwhile, the rotation speed of steel balls can be improved, the noise during the rotation is low, and the service life of rolling pins and the service life of the outer ring groove can be effectively prolonged.

Description

A kind of bearing outer ring

Technical field

The utility model relates to a kind of bearing component, is specifically related to bearing outer ring.

Background technique

Bearing is a kind of motor car engine water pump spindle shaft coupling bearing assembly, motor car engine tension wheel shaft assembly, hub of motorcycle bearing of being mainly used in.Because it is a relatively independent device, is contained on the break of automobile, directly contacts with dust, mud, water, Environmental Conditions is abominable, so structural design is most important, requires it to have good sealing property.

Bearing mainly is made up of inner ring 2, outer ring 1, lasso, steel ball 4, steel ball retainer 9, Sealing 8.Inner ring and outer ring role are: rotation, support, transmitting torque; The lasso role is: be assemblied in the hole; The steel ball role is: bearing load; The steel ball retainer role is: steel ball is separated; The Sealing role is; Sealing prevents that grease leakage and introduced contaminants, moisture from entering bearing.When inner ring, when the outer ring relatively rotates, the rolling element that is made of steel ball rolls between the raceway groove of Internal and external cycle.Bearing inner race and rotatingshaft assembling, the machinery support of outer ring and running in bearings, the motion mode branch of inside and outside circle: one, inner ring turns round with rotatingshaft, and the outer ring is fixed; Two, the outer ring is turned round with machinery, and inner ring is motionless; Three, inside and outside circle turns round simultaneously.

The curvature of existing bearing outer ring raceway groove mostly is R=2.1mm greatly, discloses a kind of push rod motor bearings [patent No.: ZL 200920114619.X] as Chinese patent literature, and the groove curvature of outer ring is R=2.08 ± 0.02mm in this bearing structure; When the bearing outer ring raceway groove has less relatively coefficient of curvature,, make bearing bear bigger load though can increase the loaded area of rolling element; But in actual use, the outer ring raceway deflection flexibility of existing coefficient of curvature is very low, and bearing is when running up, and steel ball skids more serious, has limited the raising of bearing revolution greatly.

At present, also do not solve the problems of the technologies described above better technological scheme.

The model utility content

The purpose of this utility model is to overcome the problems referred to above that exist in the background technique, a kind of improvement of bearing outer ring groove curvature is provided, that the bearing that is made of this bearing outer ring has is simple and reasonable, the deflection flexibility is good, noise is little, and the characteristics of long service life.

The utility model proposes following technological scheme:

A kind of bearing outer ring, comprise the tubulose circle body, place, aperture, axis hole two ends in the circle body is rounded down, and its direction of axis line of inwall upper edge of described circle body axis hole is provided with the outer ring raceway of annular, and it is characterized in that: the groove curvature of described outer ring raceway is R=2.20 ± 0.02mm.

As of the present utility model further preferred, the groove curvature of described semicircle oil groove is R=2.22mm.

The cross section of described annular outer ring raceway groove is an arc-shaped structure.

The beneficial effects of the utility model are: by changing the bearing outer ring groove curvature, be about to outer ring raceway curvature and change R=2.20 ± 0.02mm into from R=2.08 ± 0.02mm; Increase the coefficient of curvature (being that the outer ring raceway degree of crook is big) of bearing outer ring raceway groove, bearing deflection flexibility is in use strengthened, even under the relatively poor operating mode of lubricating condition, also can keep working preferably; Simultaneously, improved the rotational velocity of steel ball, noise is little during rotation, prolongs the working life of needle roller and outer ring raceway effectively.

Description of drawings

Fig. 1 is the structural representation of existing bearing.

Fig. 2 is a sectional view of the present utility model.

Fig. 3 is the utility model plan view.

Embodiment

Below, the technical solution of the utility model is described further by Figure of description.

Embodiment 1

As shown in Figure 1, 2, a kind of bearing outer ring comprises tubulose circle body 3, and the place, aperture, axis hole two ends in the circle body is rounded down, its direction of axis line of inwall upper edge of described circle body axis hole is provided with the outer ring raceway 5 of annular, and the groove curvature of described outer ring raceway is R=2.20 ± 0.02mm.By increasing the coefficient of curvature (being that the outer ring raceway degree of crook is big) of bearing outer ring raceway groove, bearing deflection flexibility is in use strengthened, even under the relatively poor operating mode of lubricating condition, also can keep working preferably; Simultaneously, improved the rotational velocity of steel ball, noise is little during rotation, prolongs the working life of needle roller and outer ring raceway effectively.

As further improvement of the utility model, the groove curvature of described semicircle oil groove is R=2.22mm.

Further improve as of the present utility model, the cross section of described annular outer ring raceway groove is an arc-shaped structure.

Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can not depart from spirit of the present utility model or surmount the defined scope of appended claims.

Claims

1. bearing outer ring, comprise tubulose circle body (3), place, aperture, axis hole two ends in the circle body is rounded down, and its direction of axis line of inwall upper edge of described circle body axis hole is provided with the outer ring raceway (5) of annular, and it is characterized in that: the groove curvature of described outer ring raceway is R=2.20 ± 0.02mm.

2. bearing outer ring according to claim 1 is characterized in that: the groove curvature of described semicircle oil groove is R=2.22mm.

3. bearing outer ring according to claim 1 and 2 is characterized in that: the cross section of described annular outer ring raceway groove is an arc-shaped structure.