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Once the bearing damage, must go through a very rigorous testing process to determine whether the bearing of the damage can be repaired. To be repaired bearing must be completely washed, and then conduct a comprehensive inspection of very strict. The first is to detect bearing as long as damage, such as the existence of cracks, peeling and overheating discoloration, there is bearing the injury is likely beyond repair and must be scrapped.
The reason IKO import bearings damage mainly:
1, the thermal damage (discoloration or crack), the current injury (burns, grooves or pitting)
2, chemical damage (etching, rust, corrosion, rust spots or wear erosion)
3, mechanical damage (fatigue, crack, peeling, cracking, spalling, scratches, stains, lower hardness, wear, gap, installation damage, eccentric or lubrication failure). The state monitoring and routine examination can be found in the early bearing operation problems, serious examination can help determine whether the need to repair the bearing.
IKO bearing imports repair is divided into the following three.
1, repair of type Ⅰ. Mainly for the new bearing or bearing damage smaller, including cleaning detection, overall evaluation, slight injury treatment, clearance setting and change etc..
2, repair of type ii. The main bearings in a short time the surface damage when in use, including cleaning detection, overall evaluation, disintegration, raceway and rolling body surface treatment, clearance setting and change etc..
3, repair type III. Aimed at the need to fully repair bearing various injury, including cleaning detection, overall evaluation, disintegration, raceway fatigue layer is removed, the rolling body replacement,
IKO import bearings performance right after the restoration of the same with the new bearing. The clearance of the precision parameters can reach the new bearing is required, it is important to understand and identify the damage degree to select the correct repair scheme. Such as surface grinding treatment can remove minor damage to some, but not remove fatigue layer real, unable to clear the debris caused by the depression or wear. Therefore, if only on the bearing surface grinding processing, generally not suitable for serious damage to the bearings. And if after remanufacturing repair technology is comprehensive, fatigue layer bearing have been completely removed, and the rolling body to conduct a comprehensive replacement, cage, to conduct a comprehensive arrangement, performance requirements for such bearings can reach new bearing.

The so-called NTN bearing burn injury refers to: the rolling body raceway round, NTN bearings and cage spinning rapidly heating until the discoloration, softening, melting and breakage.
The second may be excessive load (preload is too large). Speed is too high. Clearance is too small. Water or other foreign bodies penetrated. If the deflection above two conditions are not so is shaft, bearing box, big bad precision shaft. See here, I think we all want to know the solution, first of all, to study the lubricant and lubrication method, selection of lubricant, and its amount, but also to rectify the bearing selection. Research should fit, NTN bearing clearance and preload, and improved sealing device. Check the shaft and bearing box accuracy. Of course, if there are words of experts beside you, let you follow the best operation!
Recommended for NTN bearings when used, should pay attention to installation, lubrication, the clearance are accurate as far as possible, in place.