In what circumstances is it better to use a sliding bearing than a rolling bearing?
but the rolling of metal debris and other foreign bodies are particularly sensitive to the rolling bearing life shorter than the sliding bearing, bear the load bearing capacity than the same volume of plain bearings is much smaller, because of this, the radial bearing large size. So, in heavy load situations and requirements of small radial size, requires compact structure occasions (such as the crankshaft bearings, rolling mill, roller bearing) with sliding bearing; rolling bearing vibration and noise, therefore, very high precision, and no vibration occasions, rolling bearing is general competent, often used in sliding bearing.
The application of sliding bearings is usually under the condition of high speed and light load.The friction coefficient of rolling bearing operation, some high precision rolling bearing which can bear radial load and axial load, lubrication oil consumption, convenient installation, rolling bearing is smaller than the sliding bearing and realized standardization and universalization, use and maintenance is very convenient, can be used in the manufacture of sliding bearing is more expensive the non-ferrous metal saving;
Sliding bearings (sliding, bearing) bearings that work under sliding friction. 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.
