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The sealed spherical roller bearing, production has to fill in the appropriate grease, open the bearing seal is arranged in the host, in order to prevent the leakage of the lubricating grease. This has become a problem in the bearing grease. Note too little fat content, easily lead to a lack of fat or dry friction, impact life. Oil will lead to excessive FAG bearings temperature rise. Grease a large leak, not only pollute the environment, but also waste. Therefore, the premise of bearing better into the outer spherical bearing grease quantity, to ensure adequate lubrication.
Lubrication friction: mechanical friction resistance, a part is formed on the surface of the films. The cooling temperature: take away the heat by oil circulation, prevent sintering. Clean: the flow of oil, clean production work surface friction parts and metal and other materials. Seal: reduce the gas leakage and external contaminants. Corrosion: can be adsorbed on the surface, to prevent water, air, acid, harmful gases and contact position. Buffer: a sharp rise, the engine cylinder pressure, piston, a sudden increase in the piston pin, the connecting rod and the crank shaft outer spherical bearing oil load can withstand the impact load play a buffer role.
Fat loss for three main reasons: chemical reasons: the lubrication effect of heating and air friction, base oils and thickeners are oxidized, resulting in grease structure was destroyed, the use of softening damage. Physical reasons: due to the friction part in the operation, at constant shear stress under the oil, soap structure damage, softening and loss. Impurity causes: Sportswear produced in vivo, metal powder can accelerate organic acid, fat, fat oxidation, thus destroying the structure, causing oil to fail. According to the operation condition of equipment (including load, temperature, speed and so on), using the correct selection of lubricating greases prolong life of lubricating grease
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