The grease absorb the the volatile acid from the paint, so it causes the grease turn deteriorate, and this acidic ingredients also promote the fat to hydrolysis, resulting in increased concentration of acidic components, so it cause the NSK Bearings become corrosion.
Grease works’ principle is to use the oil layer to separate the inside and outside the raceway, we often use the oil viscosity to the attached to the ball and raceway surfaces, separated by a ball inside and outside the raceway and the metal interface, and to protect the metal from air and moisture corrosion, and reduce vibration and noise, so we can make NSK Bearings rotate smoothly.
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