Constant-section ultrathin-wall bearing seal structure

Abstract

The invention relates to a constant-section ultrathin-wall bearing seal structure comprising an outer ring, an inner ring, a rolling body, a holder, first seal rings, second seal rings, outer ring grippers and inner ring boss steps, wherein the symmetrical outer ring grippers are arranged at the inner diameter of the outer ring; the symmetrical inner ring boss steps are arranged at the outer diameter of the inner ring; the first seal rings are clamped between the outer ring grippers and the inner ring boss steps; the outer diameters of the first seal rings are connected with the inner diameters of the outer ring grippers and the first seal rings are fixed in the outer ring grippers; and the second seal rings are pasted on the surface of the first seal rings and extend radially along the inner sides of one ends of the first seal rings to be tightly pasted radially with the inner ring boss steps. The constant-section ultrathin-wall bearing seal structure adopts a radial contact-type seal structure, the inner ring boss steps are right-angle steps, the seal effect is good, the starting friction moment is reduced, and the operating flexibility is improved.

Description

technical field [0001] The invention relates to an equal-section ultra-thin-wall bearing, in particular to an equal-section ultra-thin-wall bearing sealing structure. Background technique [0002] According to different practical working conditions, there are two types of ultra-thin-walled bearings with equal cross-section: open type and closed type. In closed type bearings, there are two types of sealing types: contact type and non-contact type. The sealing structure of the most famous brand KAYDON - end face seal. see figure 1 As shown, it is a schematic diagram of the sealing structure of an equal-section ultra-thin-wall bearing in the prior art. The inner ring boss step 7 is a slope step, and one end of the second sealing ring 52 is tightly sealed against the slope, that is, the end face seal. In practical applications, the disadvantages of this type of end face seal structure are that the sealing effect is poor, the machining of inclined planes is difficult to measure...

AI Technical Summary

Problems solved by technology

In practical applications, the disadvantages of this type of end face seal structure are that the sealing effect is poor, it is difficult to measure and control the inclined plane machining, and the friction torque of the bearing is different.

Images