Influence of vibration and temperature on failure of NTN linear bearing

Vibration is a common factor that can lead to the failure of NTN linear bearings. When a bearing is subjected to excessive vibration, the rolling elements can become damaged, leading to premature failure. The following are some of the ways in which vibration can affect the performance and lifespan of NTN linear bearings:

1. Vibration can cause brinelling, which is the indentation of the raceway surface by the rolling elements. Brinelling can result from the impact of the rolling elements against the raceway due to radial or axial forces caused by vibration.
2. Vibration can cause fretting corrosion, which is the wear and corrosion of the bearing surface due to small movements between the raceway and the rolling elements. Fretting corrosion can occur when the bearing is subjected to low-amplitude, high-frequency vibrations.
3. Vibration can cause fatigue failure, which is the gradual degradation of the bearing material due to repeated stress cycles caused by vibration. Fatigue failure can occur when the bearing is subjected to high-amplitude, low-frequency vibrations.
4. To prevent vibration-induced failure of NTN linear bearings, it is essential to ensure that the bearing is properly mounted and aligned, and that the surrounding machine parts and structures are properly designed and maintained to minimize vibration. Additionally, selecting bearings with appropriate load ratings and clearance levels can also help reduce the risks of vibration-induced failure.