Date: 2013-08-20

The five elements of the decision bearing the purchase

1, bearing radial load
    Bearings mainly take radial load for radial bearings. Type of bearing nominal contact angle a0 <= 450. N type and NU type cylindrical roller bearings can only support radial loads, and other types of radial bearings can bear radial load, also can withstand the axial load.
2, the axial load of the bearing
    The axial load bearing general thrust bearing, its nominal contact corner a0> 450. Thrust bearing and thrust angular contact ball bearings under different structures can withstand the axial force in one or two directions. When withstand particularly high force preferred thrust cylindrical roller bearings and thrust self-aligning roller bearings.
    Thrust Spherical roller bearings and one-way thrust angular contact ball bearings can withstand axial and radial loads, and other thrust bearings can only support axial load.
3, bearing its own length compensation
    Supporting a shaft and bearing are usually fixed bearing and swimming in the bearing structure of the portfolio. Swimming the bearings compensation axis length error and thermal expansion.
    Of NU type and N-type cylindrical roller bearing is ideal for swimming bearings, these bearings themselves can compensate for length. Bearing inner and outer rings can be a tight fit.
4, sliding with length compensation
    Inalienable bearings (deep groove ball bearings and spherical roller bearings) also can be used for swimming bearings. Such bearing two rings with no axial mounting surface. Therefore, bearing a ferrule activities can, in its bearing surface.
5, separable bearing (precision)
    This is a ring that can be installed separately from the bearing, the advantage of a very prominent when the two rings were a tight fit.
    Separable bearings, including a four-point contact ball bearings, double semi-inner ring double row angular contact ball bearings, cylindrical roller bearings, tapered roller bearings, thrust ball bearings, thrust cylindrical roller bearings and spherical roller thrust bearings.

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