The structure and performance characteristics of five types of bearings

Structure and performance characteristics of tapered roller bearings

Because the rolling element in the thrust tapered roller bearing is a tapered roller, in the structure, because the raceway bus of the rolling bus and the washer are intersected at a certain point on the axis line of the bearing, the rolling surface can form a pure rolling and the ultimate speed is higher than the thrust cylindrical roller bearing.

 

Thrust tapered roller bearings can withstand axial loads in one direction.The type code of the thrust tapered roller bearing is 90000 type.

Due to the small production of thrust tapered roller bearings, most of the models produced by each factory are non-standard dimensions, and the series of standard dimensions are produced with fewer varieties, so there is no national standard for the dimensions of this type of bearing.

 

Structure and performance characteristics of thrust angular contact ball bearings

Thrust angular contact ball bearing contact angle is generally 60 ° commonly used thrust angular contact ball bearing is generally two-way thrust angular contact ball bearing, mainly used for precision machine tool spindle, generally used with double-row cylindrical roller bearings, can bear two-way axial load, has the advantages of high precision, good rigidity, low temperature rise, high speed, convenient assembly and disassembly.

 

Structure and performance characteristics of double row tapered roller bearings

There are many structures of double row tapered roller bearings, the largest number is the 35000 type, there is a double raceway outer ring and two inner rings, there is a spacer ring between the two inner rings, and the clearance can be adjusted by changing the thickness of the spacer ring. These bearings can accommodate bidirectional axial loads in addition to radial loads, limiting the axial displacement of the shaft and housing within the axial clearance range of the bearing.

 

Structural features of tapered roller bearings

The type code of tapered roller bearings is 30000, and tapered roller bearings are separable bearings. In general, especially in the size range involved in GB/T307.1-94 "Rolling Bearings - Tolerances for Radial Bearings", the outer ring and the inner assembly of tapered roller bearings are 100% interchangeable. The angle of the outer ring and the diameter of the outer raceway have been standardized in the same way as the outer dimensions. Changes are not allowed at the time of design manufacturing. As a result, the outer ring and inner assembly of tapered roller bearings are universally interchangeable worldwide.

 

Tapered roller bearings are mainly used to bear combined radial and axial loads, mainly radial loads. Compared with angular contact ball bearings, the load carrying capacity is large and the ultimate speed is low. Tapered roller bearings are capable of accommodating axial loads in one direction and are able to limit the axial displacement of the shaft or housing in one direction.

 

Features of deep groove ball bearings

Structurally, each ring of a deep groove ball bearing has a continuous groove raceway with a cross-section of approximately one-third of the circumference of the ball's equator.

Deep groove ball bearings are mainly used to bear radial loads, but can also bear certain axial loads.

When the radial clearance of the bearing increases, it has the properties of angular contact ball bearings and can withstand axial loads alternating in both directions.

Compared with other types of bearings of the same size, this type of bearing has a small friction coefficient, high ultimate speed and high precision, and is the preferred bearing type for users when selecting the type.

Deep groove ball bearings have simple structure and easy to use, and are the largest production batch and the most widely used type of bearings.