Опора шаровая задная Doohap Epica DBKD-14

The ball bearing is the node connecting the steering wheel hub and the suspension arm. Its task is to provide the ability to rotate the hub while maintaining the position of the wheel in the horizontal plane while moving it vertically. The design of the support is quite simple. This is a cone-shaped finger with a spherical or mushroom-shaped tip, capable of rotating and simultaneously swinging at small angles in the support body. The housing is bolted to the lever or pressed into it. In the latter case, the ball, as a rule, changes along with the suspension lever. In modern nodes, an unassembled structure is most often used, in which, after installing the finger, the body is rolled. Plastic or other inserts are placed between the finger and the body, working as a sliding bearing and providing a small rotational force. For old models of domestic machines, collapsible ball bearings are also supplied in spare parts, the backlash in which is eliminated by tightening the lid. Ball bearings experience serious loads during operation, since, depending on the installation location and suspension design, they can carry a significant part of the car's mass and withstand systematic impacts when passing irregularities. The main reason for the disruption of the normal operation of the ball bearing is the wear of the rubbing surfaces, which leads to an increase in the gap between the body and the finger. As a result, the finger not only rotates, but also begins to move progressively (in a simple way, "hang out" in the case). With excessive wear of the ball, shock loads can lead to the finger pulling out of the case. As a result, the support does not hold the wheel, and the car "falls" on the asphalt.