Cylindrical roller bearing and assembling method thereof

Abstract

The invention provides a cylindrical roller bearing and an assembling method thereof. The cylindrical roller bearing comprises an inner ring, an outer ring, a retainer and a plurality of cylindrical rollers; the retainer comprises two annular end surface parts and a plurality of beams which are connected to the two end surface parts, wherein limiting grooves are formed in the axial ends of the outer ring respectively; the radial outer ends of the two end surface parts are limited by the limiting grooves, so that the retainer is prevented from being separated from the outer ring; alternatively,the limiting grooves are formed in the axial ends of the inner ring respectively, the radial inner ends of the two end surface parts are limited by the limiting grooves, so that the retainer is prevented from being separated from the inner ring. According to the cylindrical roller bearing, the radial outer ends or the radial inner ends of the two end surface parts are limited by the limiting grooves, and the retainer is prevented from being separated from the outer ring or the inner ring; and flanges are not needed to arranged on the outer ring and or the inner ring, not only the axial lengthof the cylindrical roller can be increased, the radial bearing capacity of the cylindrical roller bearing is improved, and a withdraw tool groove needed for machining a roller path can be saved, andtherefore the machining cost of the outer ring or the inner ring can be reduced.

Description

technical field [0001] The invention relates to the field of bearings, more particularly to a cylindrical roller bearing and an assembly method thereof. Background technique [0002] figure 1 Shown is a NU type (double ribs on the outer ring, no ribs on the inner ring) cylindrical roller bearing according to the prior art, which is the standard structure on the market today. This cylindrical roller bearing 1 includes an outer ring 2 , an inner ring 3 , a cage 4 and a plurality of cylindrical rollers 5 . The outer ring 2 has two ribs 21, 22 with two relief grooves 23, 24 for raceway grinding relief and stress relief. [0003] This bearing does not bear axial load during operation. The two ribs 21 and 22 of the outer ring 2 are only used for axially limiting the roller 5 to prevent the roller 5 from sliding out axially. However, since the bearing steel used to form the outer ring 2 is relatively brittle, in order to prevent the ribs 21, 22 from being damaged, the axial thi...

AI Technical Summary

Problems solved by technology

However, since the bearing steel used to form the outer ring 2 is relatively brittle, in order to prevent damage to the ribs 21, 22, the axial thickness of the ribs 21, 22 cannot be made very thin

The existence of the ribs 21, 22 limits the axial space of the roller 5, thereby limiting the radial load capacity of the bearing 1, and the existence of the ribs 21, 22 increases the cost of raw materials and processing costs

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