Water will cause corrosion on the metal surface. For lubricating oil and grease, water will cause the oxidation and deterioration of the base oil in the oil, and the oxidation products will contact with water again, and generate acidic substances to corrode the metal. In addition, water causes oil oxidation metamorphism, resulting in sludge, affecting the viscosity and normal flow of oil, further causing lubrication problems. So the whole problem starts with a small amount of water, and it has a ripple effect, and it accumulates into a big damage.

1. Influence oil film strength

Bearing lubrication is relying on the lubrication oil in two layer of oil film formed between the metal contact surface, the oil film between direct friction between metal and protects the metal, if moisture into the bearing metal contact stress area, will destroy the integrity of the oil film, reduce the intensity of oil film, for bearing heavy load, low speed, the harm is especially obvious, Will cause metal fatigue damage, the formation of metal scraping, fragmentation.

2. Grow bacteria

Water will breed bacteria, microorganisms and fungi. The main harm of these substances is to affect the normal flow of oil. In addition, they will block the filter element, form corrosive substances, cause lubricating oil and fat rancid and metamorphic, and indirectly harm bearings by affecting lubrication.

3. Loss of lubricating oil and grease

Water will cause oil loss through scour, and some other greases will be softened by water immersion. With water loss, some greases use thickeners that are not water resistant, and will soften the loss in water scour and splashing.

The harm of water to bearings is mainly reflected in a series of chain reactions, so it is necessary to prevent water from the source, prevent grease and lubricating oil from contacting water in storage and use, and prevent bearing water.

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