What is bearing chamfer, the role of bearing chamfer

What is bearing chamfer?

Chamfering is a term in mechanical engineering. In order to remove burrs caused by machining on parts and to facilitate part assembly, chamfering 

is generally made at the end of parts. Chamfering can be seen everywhere in our lives, on the mobile phone frame, on the tempered door, on the 

vase and so on.

The role of the general chamfer is to remove burrs and make it beautiful. However, for the chamfer specifically pointed out in the drawings, it is generally the requirements of the installation process, such as the installation guide of the bearing, and some arc chamfers (or arc transition) can 

also play a role in reducing stress concentration and strengthening the strength of shaft parts. In addition, assembly can also be made easy, 

generally before the end of the processing.

On agricultural machinery parts, especially round accessories and round holes, the end face is often processed into a chamfer of about 45°. These 

chamfer has many functions, must be carefully viewed in the maintenance operation, and make full use of, otherwise it will bring many difficulties 

to the maintenance of agricultural machinery, and even cause unexpected failures. For example, before the molding process of small parts such as 

bolts, chamfering is also carried out in order to facilitate the material to enter the molding die.

What is the role of bearing chamfer

1, bearing steel must be chamfered when roughing before heat treatment, so that during the heat treatment of the material, the release of stress, 

the redistribution of the internal organizational structure, it is not easy to crack, and the reduction of deformation is very important. Chamfering 

can solve the problem of stress concentration.

2, chamfering deburring, so that the product is not sharp, will not cut the user

3, the assembly plays a guiding positioning role.

Usually, the outer chamfer of the bearing ring and the inner chamfer of the inner ring are rounded, and the most important thing is to facilitate 

installation in addition to effectively avoiding contact stress. Rounded corners ensure good transitional loading.

Especially in the bearing process, the positioning surface of the matching shaft and shaft hole, that is, the shaft shoulder and the bearing block 

shoulder part, the chamfer size of this part directly affects whether the bearing can be correctly installed in place.

1, bearing steel must be chamfered when roughing before heat treatment, so that during the heat treatment of the material, the release of stress, 

the redistribution of the internal organizational structure, it is not easy to crack, and the reduction of deformation is very important. Chamfering 

can solve the problem of stress concentration.

2, chamfering deburring, so that the product is not sharp, will not cut the user

3, the assembly plays a guiding positioning role.

Usually, the outer chamfer of the bearing ring and the inner chamfer of the inner ring are rounded, and the most important thing is to facilitate 

installation in addition to effectively avoiding contact stress. Rounded corners ensure good transitional loading.Especially in the bearing process, 

the positioning surface of the matching shaft and shaft hole, that is, the shaft shoulder and the bearing block shoulder part, the chamfer size of 

this part directly affects whether the bearing can be correctly installed in place.

From the figure above, we can see that the bearing is loaded between the axle box and the shaft, and the chamfer is larger than the chamfer 

between the bearing box and the shaft shoulder. The chamfer of the bearing must be larger than this arc to ensure that the bearing fits to the 

axial positioning surface.

As shown in the figure above, when the bearing chamfer is less than the chamfer of the bearing box and the shaft shoulder, it cannot be assembled 

in place, which is easy to cause a series of problems such as stress concentration at the bearing chamfer, assembly tilt, and other matching parts.