Ball bearing units for hubs

Abstract

The invention discloses a ball bearing device for a wheel hub, and is used for the wheel hub of a vehicle wheel, an outer ring is arranged on the outer side of the middle part of the wheel hub, a locating ring is fixedly arranged on the wheel hub, a plurality of first balls are arranged between the locating ring and the outer ring, a plurality of second balls are arranged between the wheel hub and the outer ring and on the rear side, an annular first sealing part is arranged between the locating ring and the outer ring, an annular second sealing part is arranged between the wheel hub and the outer ring and on the rear side; the first sealing part and the second sealing part are effectively sealed and blocked by multiple sealing; the ball bearing device for the wheel hub has a simple structure, and can effectively seal to prevent external foreign bodies from entering into a bearing, the influence of a high speed centrifugal force can be avoided, and the torque loss is reduced.

Description

technical field [0001] The invention relates to the sealing technology of the wheel hub, in particular to a ball bearing device for the wheel hub which can effectively prevent leakage and prolong the service life. Background technique [0002] With the frequent use of vehicles, the seal of the wheel is one of the keys to whether the wheel can withstand sufficient pressure and rotation speed. Therefore, sealing components such as bearings are becoming more and more important. Commonly used bearings are usually made of inner shells and outer shells. For ball bearings and balls, once water invades the inside of the bearing, it will affect the lubricating oil sealed in the bearing, causing the grease to degrade and rust to form in the bearing, thus causing shortened bearing life. [0003] Therefore, among ball bearings, there is a type employing a sealing structure capable of preventing foreign substances such as water from intruding into the inside of the bearing and also preve...

AI Technical Summary

Problems solved by technology

And, when mud water intrudes into the gap between the outer ring and the inner ring at the rear side of the bearing, if the interference of the seal does not exist or the interference is small, the mud water passes between the inner ring and the seal lip The clearance of the intrusion into the inside of the bearing, so that lubricating oil such as grease degrades, thereby shortening the life of the bearing

[0006] On the other hand, the seals rotate relatively, and due to the influence of centrifugal force in the high-speed rotation range, the interference of the seals is sometimes lost, resulting in torque loss

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