Oil seal is the sealing of lubricating oil. Oil seals are often used in various mechanical bearings, especially outside of rolling bearings. The function of oil seal is to isolate the oil chamber and equipment, to prevent the oil ester from leaking and the outside dust into the equipment.
The oil seal differs from other lip seals in that it has a more resilient lip, with a narrow contact width (about 0.5mm) and a sharp angular shape of the distribution of the contact stress. The section shape and hoop spring of the oil seal make the lip mouth have good following compensation to the shaft. Therefore, the seal can obtain a better sealing effect with a smaller lip diameter.
An oil seal is another term commonly used as a seal, usually a mechanical element for sealing oil. It is mainly to the transmission components need to lubricate the components and output components to isolate, Oil Seals not to let the lubricant leakage. Oil seals are usually divided into monomer type and assembly type. The monomer type is mainly used in special oil seals, Oil Seals and the assembled type is freely combined through the skeleton and lip mouth.
Oil seals are generally made from nitrile rubber, fluorine rubbers, silicone rubber, acrylic rubber, polyurethane, PTFE and other materials. So choose to use oil seals to consider the characteristics of the working medium, so the oil seals are generally used in the engine before and after the crankshaft and camshaft or the transmission of the front and back and the oil seal rod.
Because of the simple structure of oil seals, it is easy to manufacture, it also has light weight, less supplies, use and testing are very convenient, Oil Seals the price is also very cheap, good sealing performance, long service life and so on.
Oil seal IT and mechanical seals are not the same, because the production of oil seal materials, so the working medium of oil seal temperature can not exceed 50 degrees, Oil Seals and in the use of oil seals installed in the mechanical equipment, must check its tightness and installation to meet technical requirements.
Characteristics of oil Seals
1, oil seal structure simple, easy to manufacture. Simple oil seal can be molded once, even the most complex oil seals, manufacturing process is not complicated. Metal skeleton oil seals also only through stamping, bonding, inlay, molding and other processes can be metal and rubber composition of the required oil seal.
2, oil seal weight light, less supplies. Oil Seals Each type of oil seal is a combination of thin-walled metal and rubber parts, and its material consumption is very low, so the weight of each oil seal is very light.
3, the installation position of oil seal is small, the axial size is small, easy to process, and make the machine compact.
4, the seal of oil seal function is good, Oil Seals the service life is long. It has a certain adaptability to the vibration of the machine and the eccentricity of the spindle.
5, easy to remove oil seals, inspection and profits.
6. The price of oil seal is cheap.