Selection of the bearing and the matters needing attention when using  

                          
                         
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                    Bearing the selected profile
Rolling bearing type, type and size are various. To play the expected performance of mechanical device select the most suitable bearing is very important.
For the selected bearing, many will need to analyze and study from different angles, the choice of bearing program, there is no special specifications, but generally as follows:
(1) master mechanical and bearing conditions of use, etc
(2) clear requirement for bearing
(3) select the type of bearing
(4) the selected bearing configuration mode
(5) the selected bearing size
(6) the selected bearing specifications
(7) the selected installation method of the bearing
The use of the bearing condition and environmental conditions
Right bearing in the use of machinery parts and use condition and environment is the premise of a suitable bearing. The need to get data and information on the following aspects:
(1) the mechanism of function and structure
(2) the use of the bearing parts
(3) bearing load (size, direction)
(4) the rotation speed
(5) the vibration and impact
(6) bearing temperature (ambient temperature, temperature)
(7) the surrounding atmosphere (corrosion, clean, lubricity)
The choice of the ways of bearing configuration
Usually, the shaft is two bearings in the radial and axial support, at this point, called the bearing on one side of the fixed side bearing, it bear radial and axial load, the fixed axis and the relative axial displacement between the bearing box. Call the other side free side, only bear radial load, axial relative movement can to solve due to temperature change the shaft of the telescopic part of the topic and the installation of bearing interval error.
For fixed side bearing, choosing available rolling surface in axial moving (e.g., cylindrical roller bearing), or to move assembly surface, such as the centripetal ball bearings bearings. On the short shaft, the fixed side and free side little other cases, using one-way only fixed axial moving bearing (e.g., angular contact ball bearing).