Ntn bearings removed by the judgment whether the re-use, focused on checking the dimensional accuracy and precision of rotation, internal clearance and the mating surface raceway, cage and ring.
The test results can be use used to bearing or proficient in the bearings to be judged.
The judgment criteria vary according to the mechanical properties and importance, as well as inspection cycle. If the damage, the bearings must not be reused and must be replaced.
1) ntn bearing parts of the faults and defects.
2) roll the peel of the rolling surface of the pavement material.
Give full play to make ntn bearings and long-term to maintain its proper performance, we must effectively do regular maintenance (periodic inspection).
Through appropriate periodic inspection, so that early detection of failure, to prevent accidents in the first place, is very important to improve the productivity and economy.
1 Cleaning:
Good appearance record ntn bearings removed for inspection, first with photography and other methods. In addition, to confirm the remaining amount of lubricant and lubricant sampling, and then cleaning the bearings.
a bearing rough cleaning and fine cleaning sub-washing can be placed in the bottom of the container used in the metal grid.
b, coarse wash oil used brushes to clear grease or sticky materials. At this time if rotating bearings in the oil, pay attention because the foreign body and damage the raceway.
c, sperm washing, the oil in slowly rotating bearings should be carefully carried out.
Cleaning agents commonly used for the neutral does not contain water, diesel or kerosene, sometimes warm lye. No matter what kind of cleaning agent must often filter kept clean.
Immediately after cleaning, ntn bearings coated with anti-rust oil or antirust grease.



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