Miniature Rolling grease evaporation denotes the long-term use of the grease under high temperature conditions, the degree of volatile oil grease, and evaporated, the smaller the better. Lipid evaporation mainly depends on the nature of the lubricating oil and distillate.
Oxidation Stability refers to the use of the grease in the long-term storage or long-term high temperature resistance to the role of the heat and oxygen, and the ability to maintain its nature does not occur permanent change. Often occurs due to oxidation, reduce free alkali content or free organic acid content increases, the dropping point decline, appearance become darker in color, a different smell, consistency, strength limit, similar to the viscosity decreases, generate corrosive product and destruction grease structure substances, soap oil separation. Therefore, in the the grease long-term storage, it should be stored in dry and ventilated environment, prevent sun exposure, and should regularly check the free base or free organic acids, corrosive and other changes to ensure its quality and performance.
1. The vibration acceleration national standard
The standard formulation is relatively early, in order to measure vibration acceleration values, determine the quality grade of the micro Rolling bearing rotation, divided into three quality grades of Z1, Z2, Z3 from low to high. Domestic bearing manufacturers are still in use, and the pros and cons of the bearing to measure the vibration acceleration values simply reflect the fatigue life of the bearing.
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