Tapered roller bearing with high strength and low friction torque

Abstract

The invention relates to a tapered roller bearing with high strength and low friction torque, comprising an outer ring, an inner ring, a plurality of rollers and a cage, wherein the rollers are clamped between the outer ring and the inner ring and used for supporting and realizing relatively rotating; and the cage is used for guiding the rollers to move; a big rib of the inner ring is a convex curved rib; the root part width of the big rib of the inner ring is larger than 6.47 mm, and the axial depth of an oil groove is smaller than 0.5 mm; the raceway buses and the roller buses of the inner ring and the outer ring are in a logarithm curve convexity shape; the number of the rollers is less than 16, the length of the rollers is smaller than 24 mm, and the convex diameter of a raceway is small; the sphere base surface diameter of the rollers is smaller than 136 mm, and the diameter of the rollers is larger than 21.671 mm. The invention has long service life, saves the energy and reduces the energy consumption.

Description

technical field [0001] The invention relates to a tapered roller bearing, in particular to a high-strength and low-friction moment tapered roller bearing used in the main reducer of a drive axle of a truck. Background technique [0002] Tapered roller bearings are a standard mechanical basic part and a general-purpose part. The external dimensions of each model are standard, and the dimensions of its various parts are basically unchanged. Theoretically speaking, bearings of the same type can be used in various working conditions as long as the external dimensions, rated load and limit speed meet the requirements of use. However, some special working conditions have different requirements for bearings. For example, the main tapered roller bearing (inner bearing) of the main reducer of the truck drive axle bears a large axial load, and the use of general-purpose bearings tends to cause large gears on the inner ring of the bearing under overload and poor road conditions. Edg...

AI Technical Summary

Problems solved by technology

For example, the main tapered roller bearing (inner bearing) of the main reducer of the truck drive axle bears a large axial load, and the use of general-purpose bearings tends to cause large gears on the inner ring of the bearing under overload and poor road conditions. Cracked edges, damaged bearings

In addition, general-purpose bearings have not taken special measures to reduce frictional torque. Therefore, it is also very important to reduce the frictional torque of bearings in the case of higher and higher requirements for energy saving and environmental protection of automobiles.

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