What are the Main Structures and Properties of Tapered Roller Bearings?

Tapered roller bearings are mainly suitable for bearing radial and axial combined loads, while large tapered angle tapered roller bearings can be used to withstand radial and axial combined loads, while tapered roller bearings are separated bearings, and their inner ring components (with tapered rollers and cages) and outer rings can be used respectively. Installation, so it is easy to install and disassemble. The size of the axial clearance of the bearing has a direct impact on whether the bearing can work normally. When the clearance is too small, the temperature rises higher; when the clearance is large, the bearing is easy to be damaged. Therefore, in the process of installation and use, special attention should be paid to adjusting the axial clearance of the bearing, and if necessary, it can also be pre-adjusted to increase the rigidity of the bearing.

◆ single row tapered roller bearings

The main structure of single-row tapered roller bearings is 30,000 types. Such bearings can limit the axial displacement of the shaft or shell in one direction and withstand axial loads in one direction. Single row tapered roller bearings will produce additional axial force under radial loads. Therefore, in general, in the two supports of the shaft, the outer ring and inner ring of the bearing are installed opposite each other, such as if used alone. The external axial force must be greater than the additional axial force. The 313 series tapered roller bearings have a relatively large contact angle (27°~30°) and can withstand large axial loads. The contact angle of other series of tapered roller bearings is between 10° and 18°.

The shape size, nominal contact angle and minimum diameter of the outer ring raceway of the tapered roller bearing have been standardized internationally. When designing the tapered roller bearing, the inner and outer ring raceway and the extension line of the center line of the roller intersect at a point of the bearing shaft. Tapered roller bearings are the bearing products with the largest amount of use after deep groove ball bearings and cylindrical roller bearings. They are mostly used in automobile rear axle hubs, large machine tool spindles, high-power reducers, axle axle boxes and conveyor rollers. And support rollers and working rollers on the steel mill.

◆ Double row tapered roller bearings

The main structure of double row tapered roller bearings is a pair of roller outer rings and two inner rings, and there is a middle diaphragm between the two inner rings. Changing the thickness of the compartment can adjust the clearance of the bearing. Such bearings can withstand radial loads and two-way axial loads at the same time. It can limit the bidirectional shaft of the shaft or shell within the axial clearance range of the bearing. Displacement. It is mostly used in the spindle of machine tools and the shaft boxes of railway locomotives and vehicles. The main structure of double-row tapered roller bearings is 350000.

◆ Four row tapered roller bearings

This kind of bearing adopts two double raceway inner rings, one double raceway outer ring and two single raceway outer rings. There are diaphragms between the inner rings and outer rings for adjusting clearances. Their performance is basically the same as that of double-row bearings, and can withstand large radial loads but low ultimate speed. It is mainly used in heavy machinery, such as steel rolling mills. This type of bearing is made of carburized bearing steel, and large bearings also use hollow rollers and pillar cages to extend the life of bearings. The main type of four row tapered roller bearings is 380000.

The author of this article is Shaanxi Gainhui Heavy Industries Co., Ltd., which is a professional bearing manufacturer and supplier in China. The company supplies many types of the bearings, such as stud type track rollers, nsk roller bearings, etc. With high quality and competitive bearing products, we sincerely provide services to customers all over the world.

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