(1) bearing the mechanical occupied space and location
Mechanical design, first determine the size of the shaft, and then select the size of the shaft bearing. Usually is a small the shaft selection of ball bearings, roller bearings shaft selection. However, when the bearing is restricted in the diameter direction of the machine, then the selection of the needle roller bearings, a special light and ultralight series of ball or roller bearings; When the axial position of the bearing in the machine is limited, can be used to narrow or Laid narrow series of ball or roller bearings.
(2) the size of the bearing loads suffered, direction and nature of
The load is the most important factor in selection of bearings. Roller bearing is used to bear a heavier load, ball bearings under light or moderate loads, carburizing steel or bainite hardening bearings, can withstand shock and vibration loads.
The role of the load direction, subject to pure radial loads, use deep groove ball bearings, cylindrical roller bearings or needle bearings. Withstand the smaller pure axial load, the choice of thrust ball bearings; withstand pure axial load, thrust roller bearings can be selected. When the bearing radial and axial load, generally used in angular contact ball bearings or tapered roller bearings.
(3) aligning bearing performance
When the centerline of the shaft with the centerline of the bearing seat, the angle error, or because the axis of the two bearing spacing is large while the shaft rigidity to small, easily force curved or inclined, the choice of having good aligning properties modulation aligning ball or Spherical roller bearings, as well as the outside ball bearings. Such bearings in the case of the axis is slightly inclined or curved, to maintain normal operation.
The effort required depends on whether they have a similar bearing matching experience. Case of lack of experience, there are special requirements, or need to give special consideration to the cost of bearing arrangement and any other subsequent appearance, more work needs to be done, such as more precise calculations and / or test.


Other News:
Choice of bearing type
Bearings purchase method
Bearing carburizing process
The selection of the bearing accuracy class
Bearing friction and vibration failure
The bearing what problem can not be used
Bearing detection
Bearing failure preventive maintenance