Motor NSK bearings rusty

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Motor NSK bearing rusty reason is complex and may be bearing anti-rust treatment is not good, also possible corrosion caused by moisture, and corrosion caused by the paint mist.
Most motor plant insulating paint out of the volatile acid There are four main components: paint raw material acid (1) did not occur the reaction of low-molecular-weight component (anhydrous different neighbor and terephthalic acid, anhydrous maleic acid, trans- fumaric acid). â'¡ paint curing is generated when the acid component (with phenol denaturing paint by aqueous formaldehyde into formic acid). â'¢ heat or oxidative decomposition of the lower fatty acids (formic acid, acetic acid). â'£ paint cured acid component generated in the decomposition of water. The main acid component of the insulating paint is a close relationship between the generation amount of formic acid, formic acid, and the rust occurrence degree. Grease adsorbed paint out of the volatile acidic components, causing grease deterioration, and this acidic component and promote the hydrolysis of fats and oils, the result that the concentration of the acidic component increases, causing the NSK bearing corrosi on.bearing suppliers
Works of grease, grease layer ball inside and outside the raceway separate oil viscosity characteristics attached to the steel ball and the raceway surface, separated the ball and inside and outside the raceway metal interface to reduce the metal surface wear and protect the metal from air and moisture corrosion, and reduce the vibration and noise, so that the bearing can rotate smoothly. Grease deterioration, a viscosity change, the oil film breaking wear, grease separating function and adhesion properties will disappear, and consequences of, first, such that the acidic component generated by the insulating paint directly oxidized metal surface, causing the bearing corrosion. The second is caused by the ball and inside and outside the raceway direct touch, wear occurs when the rotation causing the noise increases.roller bearing