Professional Manufacturer NACHI 40BX8019 Deep Groove Ball Bearing
10/04/2024FAG Bearing Supplier F-805097 Tapered Roller Bearing
09/04/2024
Working principle:
Deep groove ball bearings mainly bear radial load, but also can bear radial load and axial load. When it is only under radial load, the contact Angle is zero. When the deep groove ball bearing has a larger radial clearance, it has the performance of angular contact bearing and can withstand larger axial load. The friction coefficient of deep groove ball bearing is very small and the limit speed is very high.
Deep groove ball bearing is the most common type of rolling bearing.
The basic type of deep groove ball bearing consists of an outer ring, an inner ring, a group of steel balls and a group of cages. There are two types of deep groove ball bearing, single row and double row, deep groove ball structure is also divided into sealed and open two kinds of structure, open refers to the bearing without sealing structure, sealing type deep groove ball is divided into dust seal and oil seal. The dust proof sealing cover is made of steel plate stamping, which only prevents dust from entering the bearing raceway. The oil-proof type is contact oil seal, which can effectively prevent the grease spillover in the bearing.
Q:What Is The General Fit Between The Inner And Outer Ring Of Bearings And The Shaft
A:It is generally an interference fit.
According to the direction and nature of the load acting on the bearing and which side of the inner and outer ring rotation, the load borne by each ring can be divided into rotating load, static load or non-directional load. The ferring bearing rotating load and non-directional load should be static fit (interference fit), and the ferring bearing static load can be transitional fit or dynamic fit (gap fit).
When bearing load is large or bearing vibration and impact load, its interference must increase. When using hollow shaft, thin-wall bearing box or light alloy, plastic bearing box, also must increase the amount of interference.
When high rotation is required, high-precision bearings should be used, and the dimensional accuracy of shaft and bearing box should be improved to avoid excessive interference. If the interference is too large, the geometry accuracy of the shaft or bearing box may affect the geometry of the bearing ring, thus impairing the rotation accuracy of the bearing.
Non-separation type bearing (such as deep groove ball bearing) inner and outer ring are static fit, bearing installation, disassembly is extremely inconvenient, it is best to use a dynamic fit of one side of the inner and outer ring.
