NSK Bearings rusty motor cause

Generating motor NSK lysn-bearing Rusty reasons are complex, probably NSK bearings rust handled properly, it may be caused by water corrosion, and corrosion caused by the mist. Let me just explain to you in detail.
       Most motor plant using insulating paint out of the volatile acids, there are four main components:
       ① The reaction of the low molecular weight acid component paint materials (anhydrous iso-o-and terephthalic acid, anhydrous maleic acid, fumaric acid).
       ② generated when curing paint acid component (denatured phenolic paint, the water into formic acid from formaldehyde).
       ③ thermal or oxidative decomposition of the lower fatty acids (formic acid, acetic acid).
       ④ cured lacquer generated after hydrolysis of the acid component. Resulting varnish main acid component is formic acid, formic acid and the amount of occurrence of rust occurrence a close relationship between the degree.
       Adsorption grease paint out of the volatile acidic components, causing deterioration of the grease, and this acidic component and to promote the hydrolysis of fat, resulting in increasing concentration of acidic component, causing NSK bearing corrosion.
       Grease the working principle is to use the ball and grease layer will separate inner and outer raceway, the use of oil viscosity characteristics attached to the ball and the raceway surface, separating the inner and outer raceway ball and metal interface, reducing the metal surface wear and protect the metal from corrosion of air and water, reduce vibration and noise, so that the smooth rotation of NSK Bearings.
       But grease after modification, the viscosity will change, the film broke wear, grease and adhesive properties of functional separation will disappear, so the consequences.
       One such insulating paint composition produced by the direct oxidation of the metal surface an acidic, causing the bearing corrosion.
       Two balls is caused by direct touch with the inner and outer raceway, rotation occurs when worn, causing noise increases.