Correct understanding of the use of bearings in machinery parts and conditions of use and environmental conditions is to select the appropriate bearing on the premise. Whom, the following aspects need to obtain data and information:
(1) The function and structure of mechanical devices
(2) the use of parts of the bearing
(3) bearing the load (size, direction)
(4) The rotation speed
(5) vibration, shock
(6) bearing temperature (ambient temperature, temperature)
(7) surrounding atmosphere (corrosion, cleaning, lubrication)
Bearing configuration options
Usually, two bearings in the shaft is to support radial and axial direction, this time, the lateral side of the bearing is called a fixed bearing, it is two kinds of radial and axial loads, since the fixed shaft and bearing box the relative axial displacement between the role. The other side called the free side, only radial loads, axial relative movement can, in order to resolve due to temperature changes stretching shaft and installation of the Ministry of title bearing interval error.
For the fixed-side bearing raceways can be selected in the axial movement (such as cylindrical roller bearings) or to move the mounting surface (e.g., radial ball bearings) bearings. In a relatively short shaft, fixed side and free side of the little other cases, only is one-way fixed axial movement of the bearing (such as angular contact ball bearings).



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