Engine SKF bearing damage characteristics

As the world's top bearing SKF bearings, use very common. Each kind of industry, the damage characteristics are different. Today let's look at the launch machine characteristics of sliding bearings.

(1), mechanical damage

Sliding bearing mechanical damage of bearing alloy refers to the different level of emerging appearance, major in trench stripping and metal contact appearance attack the scratch; large emerging disorder, Individual situation, the surface damage and ablation scene. Form the important cause bearing mechanical damage is the difficulty in forming the oil film bearing appearance or oil film is significant damage.

(2), bearing cavitation erosion

Sliding bearing in the cylinder pressure of repeated impact load), surface deformation and cold attacks, partial loss of deformation can soften, gradually formed has been expanded, then lines and honing with the fall off, at the surface to form. Individual bearing cavitation erosion, seizures, and the first emerged pits pits and gradually expand interface crack, alloy along the direction of parallel interface crack, flake until now. The cavitation erosion of sliding bearings is important, because oil and oil hole and structural elements of the transverse suddenly change in disorder, cause overflows fierce one-piece disorders, and then forming zone vacuum pressure is reduced because bubble, bubbles breaking and attack cavitation erosion. Individual attacks on cavitation erosion of bearing high load area, such as the crankshaft on the main bearing under bush.

(3), pitting exhaustion

Bearing fatigue, because the pitting refers to launch task, bearing load machines overheating and bearing clearance task too tired, central bearing damage, pitting exhaustion may fall exhaustion. This kind of harm mostly because of overload, bearing clearance, perhaps not clean, smooth oil mixed with them by foreign. Therefore, use should notice to avoid overloading tasks to do not bearing low or high speed running, When the idle will adjust to solid state by machine, To ensure the normal bearing clearance, avoid launched machine speed too high or too low, Review and adjust cooling system, ensure the task of task by temperature fitting.

(4), bearing alloy erosion

Bearing alloy erosion individual is not pure oil for smooth area in Taiwan, smooth oil chemical impurities (acid oxide) to produce acidity oxidizing bearing alloy material, cause bearing alloy parts formed without rules, the small stage or small pit. Bearing alloy corrosion of important cause is smooth and oil bearing material selection, erosion resistance, perhaps by low temperature, through the machine task rude.

(5), bearing burn

Shaft neck and bearings between the friction pair small protruding metal surface indirect contact with low, in part, lack of smooth, cooling condition, make bearing alloy melt part or black burn. This failure often for shaft neck and bearing with too tight, Smooth oil pressure to lack easily also destroyed. Bearings,

(6), bearing excircle

The circle is bearing bearing walk in absolute rotation here hole. After the walk bearing affect not only bearing, easily make bearings appearance, but also the ablation alloy will reverse damage, major when bearing destroyed bearing. The important cause is too short, and bearing its harm, perhaps device does not fit standard etc.

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