Angular-contact ball bearing capable of realizing grease repeatable-injection at outer ring

Abstract

The invention relates to an angular-contact ball bearing capable of realizing grease repeatable-injection at an outer ring. The angular-contact ball bearing comprises the outer ring, an inner ring, a rolling element, a holder, a first sealing ring, a second sealing ring, a grease storage groove and a grease injection hole. The rolling element is installed in a channel between the inner ring and the outer ring. The holder is arranged in the channel between the inner ring and the outer ring. The middle of the holder is provided with a spherical pocket and the holder is connected to the rolling element. The first sealing ring and the second sealing ring are arranged at a position between the outer ring and the inner ring and at two sides of the holder. The angular-contact ball bearing solves the problem that the existing grease-lubrication angular-contact ball bearing does not have the grease repeatable-injection function so that a service life of the novel structural bearing is greatly improved.

Description

Technical field [0001] The invention relates to an angular contact ball bearing, in particular to a sealed angular contact ball bearing with a repeatable grease injection structure on the outer ring. Background technique [0002] High-speed grease lubricated angular contact ball bearings are widely used in various high-speed spindles (electric spindles, engraving shafts, etc.). Traditional high-speed angular contact ball bearings are lubricated with oil mist. The oil mist is used for one time and is directly discharged into the air after passing through the bearing lubrication area. in. And it must be assisted by air source to use. This method is not only expensive to use, but also pollutes the environment. Nowadays, high-speed bearings generally use grease lubrication instead of oil mist lubrication, but the grease can only be injected once before installation. High-speed angular contact bearings are often scrapped because the grease's service life cannot be effectively lubric...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the existing angular contact ball bearings, and provide a new structure of angular contact ball bearings whose outer ring can be greased repeatedly. The technical problem to be solved is to make it overcome the existing high-speed Grease-lubricated angular contact ball bearings have the defect that the bearing is scrapped due to the expiration of the grease life and lubrication failure. The repeated grease injection structure is designed on the outer ring of the bearing, which solves the defect that the existing grease-lubricated angular contact ball bearings cannot be repeatedly greased, thereby To achieve the purpose of greatly improving the service life of the new structure bearing

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