The Difference Between Rolling Bearings And Sliding Bearings

Rolling bearings have high operating accuracy, some rolling bearings can simultaneously withstand radial and axial loads, less lubricant consumption, ease of installation, friction coefficient of rolling bearings is smaller than sliding bearings, standardized, serialized, universal, easy to use and maintain, can save the manufacture of sliding bearings for more expensive non-ferrous metals; The rolling bearing's ability to withstand load is much smaller than that of the same sliding bearing, so the radial size of the rolling bearing is large. Therefore, in the heavy load of the occasion and requires radial size small, compact structure requirements of the occasion (such as internal combustion engine crankshaft bearings, rolling mill roller bearings), more use of sliding bearings;

The main difference between a rolling bearing and a sliding bearing is that the rolling bearing has a rolling body (ball, cylindrical roller, conical roller, roller) and a sliding bearing has no rolling body.

The difference between rolling bearingand and sliding bearing first appears in the structure, the rolling bearing is by the rotation of the rolling body to support the rotating shaft, so the contact area is a point, the more rolling, the more contact points, the sliding bearing is a smooth surface to support the rotating shaft, so the contact area is a face.

Second, the movement of different ways, rolling bearings are the way of movement is rolling, the movement of the sliding bearings is sliding, so the friction situation is completely different. Rolling bearings have generally been used in relatively small mechanical equipment, higher speed slower places, such as motors, gearboxes and so on, sliding bearing applications generally in low-speed heavy-duty operating conditions, or maintenance and filling lubricant difficult operation parts, such as the ship's propulsion shaft.