Many causes of NTN Bearing damage, one of the most common causes of which is bearing dirty, not clean. The most typical dirt into the immersion time is during the initial installation process and during servicing. NTN dirt through the air to leak inside the bearing housing, or even through the use of dirty lubricant into NTN Bearing.

Rust or other metal materials such as hard and rough as a foreign substance, can cause a small depression, due to the overload fault, acid erosion or depressions caused by corrosion significantly different, hard blockage may cause the seat to rotate.

One industry representative had revealed the news that: more than 95 percent of all anti-friction bearing NTN failure from a faulty assembly, unfavorable working conditions and other similar reasons usually through observation of NTN Bearing be found.

However, the above mentioned failure of many species can be exempted or deferred through better lubricant. Water, acids or other corrosive substances cause malfunction in the performance of NTN Bearing the entire exposed surface of the seat ring has a reddish-brown skin and very small corrosion hole.

In general, since the lubricant is pushed away from the roll movement of the ball tracks in the track ball or roller art no corrosion. Corrosive oxide as abrasive as movement, it causes wear and leave a dark gray color in the balls or rollers and their races, which contrasted with the NTN bearing surface reddish brown remnants.

Noise is a sign of failure. If NTN Bearing work, to hear the voice should be soft and loose sound whine grease.

Use a screwdriver as a stethoscope to check NTN bearings. Short description shrill not fully lubricated. Shrill sound explanation shaft or bearing NTN obstructs or improper adjustment. Crunch means that the bearing in the dirt. Smooth, pure tones illustrate the traces of the stationary race. Irregular noise bearing balls described damage.