In the bearing shell or shaft diameter, a solid lubricant is artificially added to reduce friction. This type of bearing is called a solid lubricating bearing.
There is no difference in the nature of friction between solid-lubricated bearings and non-lubricated bearings, except that the surface-seal solid materials in which the solid-lubricated bearings participate in friction are intentionally placed to prevent the two surfaces from being glued, reduced in friction factor, and reduced in wear.
The use of solid lubricants saves electricity, petroleum products and non-ferrous metals, and prevents lubricants from polluting the environment. For solid lubrication applications:
1. High temperature, high pressure working environment, such as extrusion, stamping, drawing, pressing, etc.
2. Low speed conditions, such as machine guides.
3. Wide temperature range.
4. Parts that operate under high vacuum conditions, lubrication does not destroy the vacuum.
5. Parts that operate under strong irradiation conditions, solid lubricants deteriorate slowly under strong irradiation.
6. In the case of anti-corrosion, the solid lubricant does not react with air, solvent, fuel, combustion improver, etc., and can work in acid, alkali, seawater and other environments.
7. There is a dusty environment.
8. It is necessary to strictly avoid the occasions where the lubricant contaminates the product, such as food, textile, paper, medicine, printing and other equipment.
9. The occasion where the grease is easily washed away.
10. It is very inconvenient for oil supply.
The friction factor of solid lubrication is usually higher than that of oil and grease lubrication, and it has no cooling effect and does not help to discharge the wear debris.
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