To know the pros and cons of sliding bearings and rolling bearings, first of all to be clear about the difference between these two types of bearings.
Bearings, according to their different Caifen friction properties of rolling (friction) bearing and sliding friction bearings, obvious is polyphonic rolling bearing and certainly than the sliding bearing friction small, start fast, high efficiency, this is rolling bearing the advantages.
Compared with the sliding bearing, the rolling bearing's radial size is larger, the vibration reduction ability is poor, the life is low, the sound is big. This is its shortcoming.
Figure 1: rolling bearing
Rolling body shape is not limited to the ball and cylindrical roller, tapered roller, roller, and the right-hand needle.
Hendin said that according to the different rolling wheel, the rolling bearing for ball bearings and roller bearings. In the same other conditions, the roller bearings running flexible, suitable for high speed, but the bearing capacity is relatively low; roller bearings are not as flexible as the ball bearings, but bearing capacity, strong impact resistance.
Fig. two: the composition of the radial sliding bearing
The basic structure of sliding bearing is divided into bearing and shaft neck (simple structure obviously).
Sliding friction and rolling friction which is the essence of the difference (one is the point of contact with a surface contact), also has the essence of the advantages and disadvantages of.
Advantages: 1, bearing capacity is high; (contact area of the reasons) 2, the structure is simple, manufacturing, processing, demolition is convenient; 3, good impact resistance and good vibration absorption performance, stable operation, high rotation precision.
Disadvantages: 1, the maintenance of complex, high requirements for lubrication conditions; 2, boundary lubrication, friction and wear. Check (this is the disadvantage of large contact area).
Hengding hub said in conclusion, the occasion of the sliding bearing is high speed, high precision, heavy load, there is the existence of low velocity impact machine. In addition to this, the rolling bearing is widely used on most occasions.
