What is the bearing?

Bearing (bearing) is mechanically fixed parts. When other parts on the shaft relative to each other to produce a sliding bearing on the movement, the center position for holding the shaft and control the movement of parts, it is called bearings. Components used to determine the rotation axis position relative motion with other parts, from supporting or guiding role

Bearing role
Investigate its role should be supported, that literal interpretation to the bearing axis, but this is a composite bearing part of its role, supporting its essence is to be able to bear the radial load. It can also be understood as it is used to a fixed axis. Fixed shaft is rotated so that it can only be achieved, and the control of its axial and radial. Without bearing the consequences of the motor is not work. Because the axis motion may be in any direction, and the motor shaft work requirements can only be rotated. In theory, the role of transmission can not be achieved, not only that, bearing also affect the transmission, in order to reduce the impact on the high speed shaft bearings must achieve good lubrication, itself has some bearing lubrication, called pre-lubricated bearings, and most of the bearing lubricant, load at high speed due to friction will not only increase energy consumption, even more frightening it is very easy to damage the bearings. The sliding friction into rolling friction is one-sided, because the kind called plain bearings things.