What Are Bearings Used For?

Bearing is an important part of modern mechanical equipment.  

Its role should be support, that is, literal interpretation used to bear the shaft, but this is only a part of its role, support its essence is able to bear radial load.  You can also 

understand that it's used to fix the axis.  It is fixed axis so that it can only achieve rotation, and control its axial and radial movement.  

Bearing the role of a support role, namely if the transmission parts (such as: shaft) directly cooperate with hole, a driving resistance is big, and the wear big, transmission is not 

easy to change, and bearing is rely on rolling contact between components to support the transmission parts, so the sliding resistance is small, less power consumption, starting 

easily, etc.  

The main function is to support the mechanical rotating body, reduce its friction coefficient in the process of movement, and ensure its rotation accuracy.  It can be understood 

that it is used to fix the axis, so that it can only achieve rotation, and control its axial and radial movement.  If the shaft has no bearings it will not work at all.  Because the axis 

can move in any direction, and the work requires that the axis can only rotate.  

Bearings are widely used in automobiles: rear wheels, transmission, electrical components.  

Electrical: general motors, household appliances.  Instrumentation, internal combustion engine, construction machinery, railway rolling stock, loading and unloading machinery, 

various industrial machinery.  Machine tool spindles, agricultural machinery, high frequency motors, steam turbines, centrifuges, small car front wheels, differential pinion shafts.  

Oil pump, Roots blower, air compressor, all kinds of transmission, fuel injection pump, printing machinery, motor, generator, internal combustion engine, steam turbine, 

machine tool spindle, reducer, loading, unloading and handling machinery, all kinds of industrial machinery, etc.  Almost as long as it is rotating rotating are used to bearings.