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NSK bearing internal clearance
Source: China Bearing Network Time: 2018-04-02
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NSK bearing internal clearance is defined as the total distance that a NSK bearing ring is associated with another NSK bearing ring in radial (radial clearance) or axial (axial clearance). About NSK bearings Clearance; it is necessary to distinguish the internal clearance of the NSK bearing in front of the equipment and the internal clearance of the NSK bearing that reaches the mission temperature after the equipment (mission clearance). The initial internal clearance (before the equipment) is greater than the mission clearance; because of the level of interference The difference in thermal expansion between the NSK bearing ring and the associated components will cause the NSK bearing ring to expand or shorten. In order to make NSK bearings work better; radial clearance is very important. General guidelines; ball bearings should always have a mission clearance almost equal to zero; perhaps a slight preload. On the other hand; cylindrical, spherical and CARB toroidal roller bearings There should be some residual clearance at work, no matter how small. Tapered roller bearings are the same; unless they are equipped with NSK bearings that require rigidity; for example, small gear NSK bearings are equipped; NSK bearings in each must have equipment A certain amount of preload. When the NSK bearing is equipped with the proposed public relations; and under the normal normal mission; pick the NSK bearing of the shallow group clearance; the appropriate mission clearance can be obtained. It is assumed that the work and equipment conditions are not in accordance with the normal situation; for example Both NSK bearing rings are used with interference; often have abnormal temperatures, etc.; need to be greater or less than the standard internal clearance. In these cases; the residual clearance of the NSK bearing should be reviewed after the equipment. NSK bearings outside the shallow group clearance; generally in the future, C1 to C5 are leaked. The supplementary code suffix of the internal clearance has an internal clearance C1 less than C2. C2 is smaller than the shallow group CN shallow group; the world is only used with other letters; the leakage reflects the clearance reduction or the offset C3 is greater than the standard C4 is greater than C3 C5 is greater than C4 Recommend to friends comments close window
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