Scrolling and the characteristics of sliding bearings big PK

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Rolling bearing in the rolling friction is worked under bearing. The rolling bearing the use of easy maintenance, reliable work, starting performance is good, in medium speed high bearing capacity. Compared with sliding bearing, rolling bearing radial dimens ions of the larger, vibration reduction ability is bad, high speed life expectancy, noise is bigger.angular bearing
The rolling bearing type many
1, according to rolling body shape can be divided into ball bearing, roller bearing and needle bearing.
2, according to the working conditions can be divided into ordinary bearing, high-speed bearing, high temperature, low temperature bearing, bearing vacuum bearing, the magnetic bearings, corrosion resistant bearing, precision miniature bearing and large bearing. China put all types of rolling bearing into B, C, D, E, G five precision grade, B for the highest accuracy level, G for ordinary precision level, the most common application.
3, according to load direction can be divided into to the heart bearings (radial force and not big axial force), thrust bearing (can only carry axial force) and to the heart thrust bearing (can both radial force and the axial force).
The rolling bearing is the standard of bearing factory by special batch production. Design choice often to consider factors have life, load, the precision and the clearance (radial and axial), limit rotational speed, friction torque, self-aligning performance, preloaded and rigid, vibration and noise etc.
Compared with sliding bearing, rolling bearing advantages:cross bearing
1, consume less lubricant, easy to seal, easy maintenance;
2, need not use non-ferrous metal layer;
3, a high degree of standardization, batch production, the cost is low;
4, radial clearance are small, to the heart Angle contact bearings can be preloaded can be preloaded force eliminate clearance, the running high precision;
5, for the size trunnion, rolling bearing than the width of the sliding bearing small, can make the machine axial structure compact;
6, general conditions, the efficiency of the rolling bearing and liquid hydrodynamic lubrication bearing quite, but a mixture lubrication bearing is higher;
7, most of the rolling bearing can also be radial and axial load, the bearing structure simple;
Compared with sliding bearing, rolling bearing faults:
1, vibration and noise bigger;
2, the radial dimensions than sliding bearing;
3, the heavy load bearing life is lower;
4, bear impact load ability is bad;angular contact bearing