What is the difference between rolling bearings and plain bearings? What are the applications?

　 The rolling bearing is of high precision, and some rolling bearings can bear radial load and axial load at the same time,
The friction coefficient of the rolling bearing is smaller than that of the sliding bearing, which has been standardized, serialized and generalized
Manufacture of sliding bearings used in the price of more expensive non-ferrous metals; but the rolling bearings are particularly sensitive to metal chips and other foreign bodies, the life of rolling bearings
Compared with the sliding bearing, the bearing capacity of the rolling bearing is much smaller than that of the same volume sliding bearing
Cun da. Therefore, the utility model has the advantages that the utility model has the advantages of small size and compact structure requirements, such as internal combustion engine crankshaft bearing, steel rolling, etc.
Roller bearings, the use of sliding bearings; rolling bearing vibration and noise, therefore, high precision requirements, and no vibration
On the occasion, the general rolling bearing is difficult to do, often use sliding bearings.
The main difference is that the rolling bearing has a rolling body (ball, cylindrical roller, tapered roller, needle roller), the sliding bearing has no rolling body. Roll
The difference between the bearing and the sliding bearing is first shown on the structure, the rolling bearing is supported by the rotation of the rolling body to support the rotating shaft
Is a point, the more the rolling body, more than nine contact points; sliding bearings are supported by the smooth surface of the rotating shaft, so the contact part is a
Noodles。 Secondly, the movement is different, the rolling bearing is rolling; the sliding bearing is sliding
It's totally different. Rolling bearings are generally used in relatively small machinery and equipment, the higher the speed of the place, such as motors, gear boxes, etc.
The utility model has the advantages that the utility model can be used under the condition of low speed and heavy load, or is difficult to maintain and add lubricating oil
Propulsion shaft.