The Detection of Rolling Mill Bearing Radial Clearance-NEWS-FV BEARING INDUSTRIES
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The Detection of Rolling Mill Bearing Radial Clearance

Sep 13, 2021


According to the functional characteristics of rolling mill bearings and the difference in operating conditions, after selecting the appropriate bearing structure type, the bearings need to be checked routinely. These checks include the specifications and machining accuracy of the bearing and assembly parts, the quality of the lubrication, and the parts are worn out or not, etc.


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Of course, after checking the bearing, the following operations should be carried out:

The first is to clean the bearings. One point to note is that the rolling mill bearings with sealed equipment can omit the cleaning process, because the cleaning will cause the intrusion of foreign matter inside the bearing and affect the normal use of the bearing;

Second, it is necessary to adhere to the monotony of the bearing. For bearings that need to be cleaned, after cleaning the rust inhibitor on the bearing, it is necessary to dry the bearing, otherwise it will easily cause the bearing to rust;

The third is to adhere to the lubrication degree of lubrication.



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In addition to the inspection work before the bearing equipment, the radial clearance of the bearing should also be tested. Radial clearance mainly includes the original clearance of the bearing under natural conditions, the cooperative clearance that causes the original clearance to change after the bearing equipment, and the actual operating clearance formed under the effect of temperature and load. Since the size of the radial clearance directly affects the operating temperature, oscillation and service life of the rolling bearing, the detection of the radial clearance of the bearing is particularly important. Regarding different bearings, how to measure its radial clearance?


1. The measurement of radial clearance needs to use special instruments to measure things as much as possible. When there is no special instrument on hand, feeler gauge and other things can be used for measurement. When using the manual measurement method, this method has higher requirements on the measurer and is a method prone to error, so it is generally not recommended to use it.

2. For double-row and four-row rolling bearings, the clearance requirements for each row are very important, and it is necessary to test them all.

3. During the measurement, make sure that the rollers of the bearing fall into the bottom of the groove.


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