Oil seal and manufacturing method thereof

Abstract

The invention provides an oil seal and a manufacturing method thereof. The oil seal comprises an inner ring assembly, an outer ring assembly, a hoop spring ring and a side baffle ring. The inner ringassembly comprises an inner ring framework and an inner ring rubber body which are combined into a whole, and the outer ring assembly comprises an outer ring framework and an outer ring rubber body which are combined into a whole. The inner ring assembly and the outer ring assembly are matched with each other to slide, the inner ring rubber body of the oil seal and a rotating shaft at the sealingportion are well matched and installed, and therefore the processing precision dependence on the surface of the rotating shaft is reduced. The inner ring framework belongs to the component of the oilseal, and the roughness of the smooth surface of the inner ring framework can be independently controlled in a factory, so that the sliding friction between an inner ring and an outer ring of the oilseal is effectively reduced, the oil sealing effect is improved, and the service life of the oil seal is prolonged. An oil storage cavity is formed between an oil storage lip of the outer ring rubberbody and the smooth surface of the inner ring framework, the oil storage cavity is filled with lubricating grease, and oil storage is reliable, so that the friction coefficient between the inner ringand the outer ring of the oil seal is further reduced, and long-time high-efficiency oil sealing of the oil seal is ensured.

Description

technical field [0001] The invention relates to the technical field of oil seal and dust prevention, in particular to an oil seal and a manufacturing method thereof. Background technique [0002] The oil seal is used to seal the oil seal of the rotating shaft in the mechanical equipment. It is often used in the bearings of various machines, especially the rolling bearings. Its function is to isolate the oil chamber from the outside world, seal the oil inside and seal the dust outside. The sealing lip of the existing oil seal is usually in direct contact with the rotating shaft in the mechanical equipment. In order to improve the sealing effect and service life, the contact between the rotating shaft and the oil seal needs to have high-precision size specifications and roughness specifications, which improves The manufacturing cost of mechanical equipment and the poor oil storage capacity of the lubricating grease of the existing oil seal result in generally low service life,...

AI Technical Summary

Problems solved by technology

The sealing lip of the existing oil seal is usually in direct contact with the rotating shaft in the mechanical equipment. In order to improve the sealing effect and service life, the contact between the rotating shaft and the oil seal needs to have high-precision size specifications and roughness specifications, which improves The manufacturing cost of mechanical equipment, and the poor oil storage capacity of the lubricating grease of the existing oil seal, resulting in generally low service life, reducing the reliability of mechanical equipment, increasing maintenance frequency and maintenance costs

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