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Detailed method for determining whether NTN outer spherical bearings should be repaired
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For example, when using the HD 1 type instrument; when the pointer is close to the danger zone by the warning area; and the pointer does not come back after adopting the method of improving the smoothness, etc.; it can be found that the problem of the NTN outer spherical bearing itself; at this moment, the danger is not entered. District time; repair the bearing. After all, it is far from the danger zone to start repairing; can be adjusted by experience.
The use of such instruments; can fully utilize the potential of NTN spherical bearings; repair the bearings in time; and prevent the occurrence of problems; it is safe and economical.
2) Use simple things to monitor in the case where the above instruments are not available; the operator can hold the round bar or the wrench and the like to conflict with the outer casing of the NTN outer spherical bearing; the ear is ashamed to monitor the work of the bearing from the east and west. Sound; of course, the use of medical stethoscope modification can also.
Normal NTN outer spherical bearing should work evenly; smooth and not sharp sound; abnormal bearing work sounds have a lot of intermittent; impact or sharp sound. First of all, get used to normal bearing work sound; then It is possible to grasp the abnormal working sound of the bearing; then, through the accumulation of practical experience; further can distinguish what kind of abnormal sound corresponds to what kind of bearing abnormal appearance. NTN outer spherical bearing is not normal sound type Difficult to speak; mainly rely on experience accumulation.
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