In the process of polishing the ball, the relative position of the two parts is determined and the free rotation is ensured, and the load between them is transmitted to some extent. At the rotation speed, the use can be expanded to include free rotation. There is almost no wear in the bearings. To achieve this, the two parts of the bearing can be separated by a layer of adhesive fluid film called an elastic hydrodynamic lubricating film.
Polished bearing balls are used in a variety of machines and equipment with rotating parts, and designers often decide whether to use ball bearings or fluid film bearings for specific applications. The following characteristics make ball bearings more desirable than fluid film bearings in many applications.
1. The starting friction is small and the working friction is suitable.
2. Can withstand radial and axial combined loads.
8. Not sensitive to the interruption of lubrication.
4. No self-induced instability.
5. Low temperature start is easy.
Within a reasonable range, changing the load, speed and operating temperature has only a small effect on the good performance of the ball bearing.