What are the differences between rolling bearings and plain bearings? What are their respective applications?
The second is the movement in different ways, the way of rolling motion the bearing is rolling motion; x0d sliding bearing is sliding, so the situation on the friction is not the same. The general mechanical equipment used in relatively small rolling bearing, high speed, such as motor x0d, Gear box, sliding bearing applications generally in low speed and heavy load conditions, or maintenance and operation of the site maintenance and lubricating oil is difficult, such as ship propulsion shaft x0d.x0d hope my answer to help you.
So, in heavy load situations and requirements of the radial dimensions small, compact structure requirements of occasions (such as the crankshaft bearings, rolling mill, roller bearing) with sliding bearing; rolling bearing vibration and noise, so on The precision requirement is very high, and no vibration occasions, rolling bearings generally difficult to do, is a rolling bearing rolling body adopts the sliding bearing.x0d the main difference often (ball, roller, tapered roller, needle roller bearing), there is no difference between the rolling body.x0d rolling bearing and sliding bearing the first appearance of the structure on the rolling bearing is a rotating body by rolling to support the rotating shaft, which is a point of contact area, rolling body more, nine more points of contact; x0d sliding bearing is on the smooth surface to support the rotating shaft, which is a surface contact area.
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; 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.
