Non standard bearing seal is not external seal or self-contained seal: in order to make the non-standard bearing better packaged in smooth conditions and normal operation environment, it can fully play the operation function of non-standard bearing, have a longer service life, and avoid the leakage of smooth agent and the entry of water vapor, dust or other pollutants. The sealing of non-standard bearing is not external sealing or self sealing. The functional equipment of external sealing of non-standard bearing is made into a sealing equipment with multiple functions in the equipment end cover, etc. The non-standard bearing with its own seal means that the bearing itself is made into a sealing function equipment, such as sealing ring and non-standard bearing dust cover and so on.

Selection of non-standard bearing varieties and smooth agent: first of all, understand the use of non-standard bearing smooth agent and varieties, smooth oil and smooth grease. Understand the operation environment of non-standard bearing and the size of occupied space. Understand the advantages of the support layout of the non-standard bearing shaft, and find the viewpoint error. Understand the operating temperature of non-standard bearing. Finally, we know that the external seal of non-standard bearing is not touch type or non touch type.

Touch seal refers to the seal which is touched by the relative moving parts without any gap. All kinds of seals think that there is a direct touch between the seal and the cooperative parts, which has a large conflict in operation, a large amount of heat output, and is easy to form a smooth and bad condition. The touch surface is easy to wear, resulting in the reduction of the sealing function and function. Therefore, it is only applicable to the medium and low speed operation environment. Touch Type seal is often used in blanket honey, cup honey and other layout methods, and it is used in different occasions. According to the operation condition of non-standard bearing and the demand of the operation environment for the sealing degree, various sealing methods are often summarized in the engineering design to achieve the best sealing function.

Non touch seal is a kind of the seal with the a certain gap and no touch way. The seal in this way has no conflict heat and wear in operation. In high-speed and high-temperature environment, different layout methods, such as gap type, labyrinth type and gasket type, are often used to abolish the mode seal. They are used in different singing. The gap of non touch seal should be minimized as much as possible.