What are the major damage forms of plain bearings?
Two: sliding bearings (sliding, bearing), work under sliding friction bearings. Plain bearings work smoothly, reliably and without noise. Under the condition of liquid lubrication, the sliding surface is separated by the lubricant without direct contact, and the friction loss and surface wear can be greatly reduced. The oil film also has a certain vibration absorption capacity. But the starting friction resistance is larger. The shaft supported by the bearing is called the journal, and the part that matches the journal is called the bush. In order to improve the friction properties of the bearing surface, the antifriction material layer, which is cast on its inner surface, is called the bearing lining. Bearing and bearing lining materials are collectively referred to as journal bearing materials. The application of sliding bearings is generally under low speed and heavy load conditions.
A: the main types of damage to the pulley bearings are: 1, glued bearings overheating, excessive load, improper operation or temperature control system failure.2. Fatigue failure caused by unbalanced vibration, shaft deflection and edge load, overload and so on, lead to fatigue rupture of babbit. Bearing repair and installation quality is not high.3, because the grease dirt nap of large particles into the bearing gap, and embedded in the bearing bushings, bearing and shaft neck (or thrust plate) contact, hard callus formation on the surface, it will seriously scratch the shaft, bearing oil picking attention clean, especially in maintenance we should pay attention to, metal scraps or dirt and scratches due to wear clean lubricating oil mixed with impurities, dirt and foreign matter. The repair method is wrong and the installation is wrong. Improper use and maintenance, poor quality control.
