1, IKO bearings and the journal and the box with the amount of interference the flange bearing radial clearance with the journal and cabinet with the expansion of its inner ring outer ring contraction leaving the radial clearance reduction. When selected journal and bearing fit, can be regarded as the amount of interference, the bearing radial clearance reduction.
2,The temperature difference between the inner and outer rings of the radial clearance of flange bearings, IKO bearings work will generate heat due to friction and cause the temperature to rise. Below the cooling area of the outer ring, the cooling area of the bearing inner ring and the outer ring temperature is lower than the inner ring temperature caused by the temperature difference between the inner and outer rings. The temperature difference makes the expansion of the inner ring of the amount of expansion is greater than the outer ring of the bearing radial clearance reduction.
3, journal, IKO bearings, the cabinet material linear expansion coefficient of the radial clearance flange bearing materials with the journal, cabinet material, the coefficient of linear expansion, the working temperature will cause the bearing clearance work changes. Expansion coefficient caused by the bearing clearance is increased or decreased, depending on the journal bearings, the magnitude of the coefficient of expansion of the casing line. Journalled a linear expansion coefficient of the material is greater than the coefficient of linear expansion of bearing steel, or the coefficient of linear expansion of the casing material is less than the coefficient of linear expansion of bearing steel, and the radial clearance will be reduced, the amount of change of the clearance.
4, the work load on the flange bearings IKO bearings radial clearance in the radial loads under the inner ring elastic expansion and reduce the radial clearance; produce elastic expansion of the outer ring, radial clearance increases. The outer ring diameter greater than the inner ring diameter, the results of the radial load bearing radial clearance increased.
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