NTN tapered roller bearing refers to the radial thrust rolling bearing with tapered roller as the rolling element. There are two kinds of large and small cone angles. The small cone angle mainly bears the combined radial and axial load dominated by radial load, which is often used in double and installed in reverse. The inner and outer seat rings can be installed separately, and the radial and axial clearance can be adjusted during installation and use; The large cone angle mainly bears the combined axial and radial load dominated by axial load. Generally, it is not used to bear the pure axial load alone. It can be used to bear the pure radial load when it is used as a pair configuration (opposite installation at the same end).
definition
The ability of single row tapered roller bearing to bear axial load depends on the contact angle, that is, the outer race raceway angle. The greater the angle, the greater the axial load capacity. Single row tapered roller bearings are the most widely used tapered roller bearings. A small size double row tapered roller bearing is used in the front wheel hub of a car. Four row tapered roller bearings are used in heavy machines such as large cold and hot rolling mills.
Structural features
The type code of tapered roller bearing is 30000, and the tapered roller bearing is a separate bearing. In general, especially in GB / T307 The outer ring and inner components of tapered roller bearings within the size range involved in 1-94 tolerance for radial bearings of rolling bearings are ** interchangeable.
The angle of the outer ring and the diameter of the outer raceway are the same as the overall dimensions and are standardized. It is not allowed to change during design and manufacturing. So that the outer ring and inner components of tapered roller bearing can be interchanged all over the world.
Tapered roller bearings are mainly used to bear the combined radial and axial load dominated by radial load. Compared with angular contact ball bearing, the bearing capacity is large and the limit speed is low. Tapered roller bearing can bear axial load in one direction and limit axial displacement of shaft or shell in one direction.
