1.Never mix incompatible grease, if two incompatible grease mix, usually the consistency will become soft, and finally because the grease is easy to lose and cause damage. 2. Oil seal is the portal that contains grease and cylindrical roller bearings from external pollution, many cylindrical roller bearings in industry only use ball cage, some use metal oil seal system, some because of automatic oiling system, and present completely open state, and bicycle usually can not use such cylindrical roller bearings, otherwise only after the first cycle of grease depletion or pollution, that is declared the end of life, and Although the cylindrical roller bearings with metal oil seal can also avoid contamination in a longer period of time, and can play a role in containing oil. 3. Grease in high-speed rotation will become soft, resulting in leakage, when there is vibration, grease will be extruded from the raceway thrown, and the soap structure of grease will produce mechanical disintegration so that grease is destroyed, and even thrown out of the cylindrical roller bearings. 4. used in cylindrical roller bearings within the grease have anti-rust, anti-rust performance is good or bad mainly depends on the grease solubility, different viscosity and different materials formed grease, with different levels of anti-soluble and anti-rust performance, in general, the viscosity and poor grease solubility grease waterproof better, such grease even in the Perlin cavity is filled with water, but also in the steel surface to form a layer can resist the oil film.

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