Self-aligning roller bearing suitable for axial and radial unbalance loading working conditions and heat treatment process

Abstract

The invention discloses a self-aligning roller bearing suitable for axial and radial unbalance loading working conditions and a heat treatment process, and belongs to the technical field of bearings.The bearing comprises an outer ring, an inner ring and two rows of symmetrical spherical rollers kept between the two inner roller paths and a shared outer roller path through a retainer correspondingly, wherein the the two rows of rollers are different in length so as to enable the two rows of rollers to form long rollers and short rollers correspondingly, the maximum diameters of the short rollers are smaller than the maximum diameters of the long rollers, and the sphere center of the spherical surface where the outer roller path is located deviates from the axial center of the bearing towards one end of the short rollers in the axial direction of the bearing. According to the self-aligning roller bearing suitable for the axial and radial unbalance loading working conditions and the heattreatment process, a deflection angle of the bearing is increased, the contact stress of the rollers on the two sides and the roller paths is uniform, the overall service life of the bearing is prolonged, the bearing still has high hardness, stable size and high wear resistance at high temperature, and the bearing is suitable for output end shafts of main transmission cases of ocean engineering equipment, metallurgical machines, electric power equipment, special vehicles, axial flow fans and the like.

Description

technical field [0001] The invention relates to a self-aligning roller bearing suitable for axial and radial eccentric load working conditions and a heat treatment process, belonging to the technical field of bearings. Background technique [0002] Spherical roller bearings have good self-aligning performance, mainly bear radial loads, and can also bear certain axial loads. Conventional double-row symmetrical spherical roller bearings (such as figure 1 shown) is mainly composed of outer ring (1), inner ring (2), and two rows of rollers (3) held between outer ring (1) and inner ring (2) by cage (31), usually allowing The maximum deflection angle of the axis of the inner ring relative to the axis of the outer ring is 1.5°. When the deflection angle of the axis of the inner ring relative to the axis of the outer ring is greater than 1.5° during use, the rollers will protrude from the end face of the outer ring, the bearing area of ​​the rollers will be reduced, and the contac...

AI Technical Summary

Problems solved by technology

Conventional double-row symmetrical spherical roller bearings can bear the same radial load or one-way axial load capacity for each row of rollers. When used in the above occasions, the two rows of rollers and the corresponding raceways are not evenly loaded. Contact The large difference in stress will lead to early fatigue spalling and damage to the bearing rollers and raceways at the end bearing large radial and axial loads, resulting in shortened overall life of the bearing

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