Tapered Roller Bearings Structural Characteristics Of

Tapered roller bearings are separable bearings, and the inner and outer rings of the bearing have conical rollers. The bearings are divided into single column, double row and four-row taper roller bearing, etc. Single row cone roller bearing can withstand radial load and single direction axial load. When the bearing is subjected to the radial load, it will produce an axial component, so it is necessary to balance the bearing with the other axial force.

The ability of the single row cone roller bearing to bear axial load depends on the contact Angle, i.e. the Angle of the outer ring raceway, the larger the Angle, the greater the axial load capacity. Single row tapered roller bearings are used in taper roller bearings. In the front wheel hub of the car, a small double row tapered roller bearing is used. Four row tapered roller bearings are used in heavy duty machines such as large cold and hot rolling mills.

Structural characteristics of

The type code of taper roller bearing is 30000, and tapered roller bearings are separated type bearings. In general, especially in the GB/T307.1-94 "rolling bearing centripetal bearing tolerance" involved in within the scope of the size of the tapered roller bearing outer ring and inner components is gm's one hundred percent can be used interchangeably.

The Angle of the outer ring and the diameter of the outer raceway have been standardized with the same dimensions. It is not allowed to change during design and manufacture. The outer ring of the cone roller bearing can be interchangeable with the internal components in a world wide range.

Tapered roller bearings are mainly used for radial and axial combined load mainly for radial load. Compared with angular contact ball bearing, the bearing capacity is large and the limit speed is low. The cone roller bearing can withstand the axial load of one direction, which can limit the axial displacement of the shaft or the shell in one direction.


Tapered roller bearings are mainly subjected to radial and axial joint loading. Bearing capacity depends on the raceway Angle of the outer ring

The bigger the load. The bearings are separated type bearings and are divided into single columns, double columns and four-row tapered roller bearings. Single row cone roller bearing clearance needs to be adjusted when installing; Double row and four row cone roller bearing clearance have been given according to the user's requirement when the product is out of the factory.

Tapered roller bearings have a conical inner circle and outer ring, and the conical roller is arranged in between. All the projecting lines on the surface of the cone are met at the same point of the bearing axis. This design makes the cone roller bearing especially suitable for bearing the load of composite (radial and axial). The axial load capacity of the bearing is largely determined by contact Angle alpha; The larger the alpha, the higher the axial load. The Angle size is represented by the calculation coefficient e; The greater the value of e, the greater the contact Angle and the more applicability of the bearing bearing axial load.

Tapered roller bearings are usually separated, that is, the inner ring components of the rollers and the inner ring of the retaining assembly can be separately installed with the cone outer ring (outer ring).


Adjust the axial clearance for the installation of the tapered roller bearing axial clearance, available on the journal of adjusting nut, adjusting shim and bearing hole of the thread, or use the methods of preloaded spring to adjust. The size of the axial clearance is related to the arrangement of the bearing installation, the distance between the bearings and the material of the shaft bearing seat, which can be determined according to working conditions.

For high load high speed circular cone roller bearings, adjust clearance, must consider the effect of temperature on the axial clearance, clearance reduction is estimated, will cause the temperature rise, that is to say, the axial clearance to properly adjust a bit bigger.

For bearings with low speed and vibration bearing, no clearance installation shall be taken, or pre-load mounting shall be applied. The purpose of this paper is to make the roller and roller of the taper roller bearing good contact, distribute the load evenly and prevent the vibration of roller and raceway from being destroyed. After adjustment, the size of the axial clearance is tested with a micrometer.

Installation of four row taper roller bearings (installation roller bearing) :

One or four rows of tapered roller bearing inner ring and roll neck are usually interstitial. The bearing box shall be loaded into the bearing box before installation, and then the bearing box shall be loaded into the shaft neck.

Two, four row cone roller bearing outer ring and bearing box hole are also used with the operation, first the outer ring A into the bearing box. The outer ring, inner circle and inner and outer rings are printed with the word {HotTag} symbol, and the bearing box must be packed in the order of character symbol. Not interchangeable to prevent the change of bearing clearance.

3. After all the parts are loaded into the bearing box, the inner circle and inner circle, outer ring and outer ring axis shall be tightened.

4. Measure the gap width between the outer end of the outer ring and the cover of the bearing box to determine the thickness of the corresponding seal gasket.