Cross spherical roller bearing

Abstract

The invention provides a cross spherical roller bearing which can effectively reduce the starting moment of the bearing and the frictional moment of the bearing in normal operation. The bearing includes an outer ring, an inner ring and rolling elements. Both the outer ring and the inner ring are provided with two rows of spherical raceways. The rolling elements are spherical rollers. Each two rowsof the evenly spaced spherical rollers whose axes cross 90 degrees are supported by each two rows of the spherical raceways.

Description

technical field [0001] The invention relates to a new type of cross roller bearing. Background technique [0002] Crossed roller bearings are arranged at right angles to each other at intervals between the outer ring and the inner ring, so they can bear loads from all directions at the same time, and the crossed roller bearings have high rotation accuracy and small size, so they are widely used in Where high rigidity, high speed and compactness are required. [0003] A common type of crossed roller bearing is the crossed cylindrical roller bearing. Typically, such as figure 1 As shown, the crossed cylindrical roller bearing is composed of outer ring 1, inner ring 2, cylindrical rolling element 3', spacer block 4 and lock ring 5. Both the outer ring 1 and the inner ring 2 have a 90° V-shaped raceway. The rolling elements 3' are arranged perpendicular to each other on the raceway through spacer blocks 4. [0004] In crossed cylindrical roller bearings, since the rolling e...

AI Technical Summary

Problems solved by technology

[0004] In the crossed cylindrical roller bearing, since the rolling elements are in line contact with the raceway, the bearing has a large frictional moment when it starts and works normally, and it also greatly limits the limit speed of the bearing.

This makes the bearing unusable in many conditions requiring heavy loads, high speeds and low friction

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