Self-lubricating thrust knuckle bearing and manufacturing method thereof

Abstract

The invention discloses a self-lubricating thrust knuckle bearing and a manufacturing method thereof, and relates to the field of thrust knuckle bearing lubrication. The self-lubricating thrust knuckle bearing comprises an inner ring and an outer ring; the self-lubricating thrust knuckle bearing and the manufacturing method thereof is characterized in that the surface of the inner spherical surface of the outer ring is provided with a plurality of micro concave pits with the diameters of 40-120 microns and the depths of 10-20 microns, the ratio of the plurality of micro concave pits to the surface area of the inner spherical surface of the outer ring is 25%-35%, and solid lubricant are filled in the plurality of micro concave pits. According to the self-lubricating thrust knuckle bearing and the manufacturing method thereof, the surface of the inner spherical surface of the outer ring is machined, the plurality of concave pits with certain diameter, depth and area occupancy are formed,polyimide and molybdenum disulfide composite solid lubricant are filled in the concave pits of the inner spherical surface of the outer ring, so that the thrust knuckle bearing has a self-lubricatingeffect; and the supporting structure of the inner spherical surface of the outer ring is not changed on the macroscopic scale, so that the purposes of prolonging the service life and bearing capacityof the self-lubricating thrust knuckle bearing are achieved.

Description

technical field [0001] The invention relates to the field of thrust joint bearing lubrication, in particular to a self-lubricating thrust joint bearing and a manufacturing method thereof. Background technique [0002] Thrust joint bearings are sliding bearings, which consist of an outer ring with an inner spherical surface and an inner ring with an outer spherical surface, and can bear axial loads or combined loads in one direction. The friction between the outer ring and the inner ring is generally in the form of steel against steel, which is relatively prone to wear. [0003] In order to improve the wear resistance of the thrust spherical plain bearing and prolong its service life, it is currently common practice to paste a self-lubricating material liner on the inner spherical working surface of the outer ring of the thrust spherical plain bearing, such as the self-lubricating material liner disclosed in Chinese patent document ZL200520008244.0. The lubricated joint bear...

AI Technical Summary

Problems solved by technology

The methods of the above-mentioned patents all make the thrust joint bearing have the effect of self-lubrication, which reduces wear and tear, but pasting the self-lubricating liner on a large area reduces the load-carrying capacity of the thrust joint bearing, which has certain limitations

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