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How to extend the life of the bearing Release time: 2016/9/27 13:58:10 |
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| First, the bearing selection stage, need to consider many factors (such as: load, hardness, operating environment, etc.), a good bearing design will first make the bearing to achieve its maximum life value (refer to "bearing design considerations") Second, the correct storage, the best before the installation of bearings should be stored in their original packaging. Need to remain in a clean, moisture-free, relatively constant temperature environment. Rolling bearings should be kept away from dust, water and corrosive chemicals. Shaking and shaking may permanently damage the mechanical properties of the bearing, so handling and storage should be avoided vibration. General bearings should be stored horizontally, some heavier bearings for a long time after vertical placement, because of their own weight and deformation! Also, grease-coated (or hermetically sealed) bearings need to be handled with extreme caution because the density of the grease changes after a long period of storage. When the bearing is used for the first time, there will be a certain degree of turning noise. Therefore, the holding time of such bearings should be in accordance with the principle of FIFO control! Third, clean, which is very important for rolling bearings. The rotating surfaces of the bearing rings are very smooth and are very sensitive to damage caused by contaminants. Particulate contaminants are subject to excessive rolling of the rolling elements to create localized stresses in the bearing that eventually lead to permanent material fatigue. Fourth, the full re-installation of equipment, bearings should use the appropriate tools carefully installed and removed. Should choose the right tool! Industry experts estimate that 16% of premature bearing failure is due to improper installation. Generally speaking, a large number of installation, generally take the appropriate bearing installation equipment. But in the maintenance or replacement work, the environment is diverse! Suggest that you, the drawings, maintenance manuals, product brochures need to look carefully. The components of the bearings should also be kept absolutely clean! Fifth, careful installation and removal. 1, do not impose mounting force on the rolling element, which can easily lead to the rolling element and the seat contact surface of the local overload, leading Zhen Zhen bearing premature failure. 2, do not use any hard tools (such as hammers, screwdriver, etc., I have seen too much with these two tools "hard" installed, too strong) directly knock on the bearing surface, which will lead to fracture or broken bearing ring. 3, the general bearing will not be removed from the device, only the larger bearings will be removed due to preventive maintenance. During disassembly, the correct tool should be used first, ensuring that the adjacent parts are not damaged! 6, proper and proper lubrication, lubricants can isolate the bearing surface, thereby reducing friction, protecting metal parts and to prevent contamination and impurities. There are a variety of grease available for different operating conditions. Due to the excessive rolling of the rolling elements, the bearing lubricants are subject to long-term mechanical stresses, and the chemical properties of the lubricant may change, especially for prolonged periods of high temperature, humidity or contamination. These will result in a lower quality lubricant. Therefore, the bearing should be re-lubrication on a regular basis. The cycle is determined by the operating conditions. |
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