30303 Tapered roller bearings

30303 Tapered roller bearings

Classification and characteristics of tapered roller bearings
A, single row tapered roller bearings

A single-row tapered roller bearing has an outer ring, and its inner ring and a group of tapered rollers are enclosed by a basket cage into an inner ring assembly, and the outer ring and the inner ring assembly can be separated. In addition, single-row tapered roller bearings can adjust the size of the clearance during installation. Such bearings can only limit the axial displacement of the shaft or housing in one direction and bear the axial load in one direction.

Two, double row tapered roller bearings

The outer ring (or inner ring) of a double-row tapered roller bearing is a whole, and the small end faces of the two inner rings (or outer rings) are similar, and there are spacer rings in the middle. The bearing can bear two-way axial load while bearing radial load, and can limit the two-way axial movement of the shaft or housing within the axial clearance range of the bearing.

Three, four row tapered roller bearings

The performance of this kind of bearing is basically the same as that of double-row tapered roller bearings, but the radial load is larger than that of double-row tapered roller bearings, and the limit speed is slightly lower, which is mainly used for heavy machinery, such as rolling mills.

Four, multi-seal double, four-row tapered roller bearings

Multi-seal double and four-row tapered roller bearings change the traditional design method of fully sealed bearings, and adopt a new sealing structure that combines sealing and dust prevention to improve the sealing effect and sealing performance. Compared with the open structure bearing, the life is increased by 20%-40% and the lubricant consumption is reduced by 80%.