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First, the basic role of oil seal
Oil seal is a device used to seal lubricating oil or hydraulic oil in mechanical equipment. Its main role is to prevent the leakage of lubricating oil or hydraulic oil, while preventing external substances (such as dust, water, gas, etc.) from entering the inside of the machine and affecting its normal work. The sealing performance of the oil seal has an important impact on the life, performance and reliability of the mechanical equipment.
Second, the classification of oil seals
According to different uses and shapes, oil seals can be divided into many types. Common oil seals are shaft seals, piston seals, static seals and so on.
1. Shaft seal
Shaft seal is the most common type of oil seal. It prevents oil leakage by mounting on the outside of the machine shaft and prevents impurities such as dust from entering the inside of the machine. The shaft seal usually has an elastic lip structure, which is embedded between the shaft and the metal shell of the oil seal to ensure the sealing of the shaft and the oil seal.
2. Piston seal
Piston seals are usually used as seals on hydraulic cylinders, cylinders and other equipment. Its main function is to prevent gas or liquid leakage while maintaining oil pressure. Piston seals are generally composed of metal and rubber materials.
3. Static seal
Static seals are usually devices used to seal immobile parts of machine equipment. Such as valves, pipe connection parts, etc. Static seals usually use soft sealing materials or metal seals as sealing materials.
Three, oil seal selection and installation skills
Choosing the right oil seal is very important. Here are some selection and installation tips:
1. To choose the oil seal suitable for the working environment of the machine. For example, for high temperature, high humidity, corrosion and other environments, the appropriate oil seal should be selected.
2. To choose the appropriate size and material of the oil seal. The size of the oil seal should match the size of the machine shaft or sealing parts, and the material should also be selected from the appropriate material (such as rubber, polyester, polyurethane, etc.).
3. When installing the oil seal, pay attention to the following points: (1) First clean and check the machine parts to ensure that the surface is clean and free of impurities; (2) Install the oil seal in the correct position; (3) Use the correct installation tools to avoid damage to the oil seal.
Iv. Conclusion
Oil seal is a very important part of mechanical equipment, which can effectively prevent the leakage of lubricating oil or hydraulic oil and ensure the normal operation of the machine. According to different uses and shapes, oil seals can be divided into many types. When selecting and installing oil seals, it is necessary to pay attenti
on to factors such as material, size, and working environment to ensure its sealing performance and stability.