为了使轴承保持良好的润滑条件和正常的工作环境，充分发挥轴承的工作性能，

In order to maintain good lubrication of the bearing and normal work environment conditions, bearing full performance, prolong the service life of rolling bearings must have a suitable sealing to prevent leakage of lubricant and invasion of dust, moisture or other contaminants . <br> <br>Bearing seal can be divided into two categories own seal and external seal. The so-called sealed bearings carrying the bearing itself is manufactured to have the sealing performance of the device. Such as bearings with dust cover, ring. This sealed space is small, easy installation and removal, the cost is relatively low.

In order to maintain good lubrication conditions and normal working conditions, give full play to the bearing's operating performance and extend service life, rolling bearings must have a suitable seal to prevent lubricant leakage and intrusion of dust, water or other dirt. Bearing seals can be divided into their own seals and an additional seal. The so-called bearing comes with sealising is the bearing itself manufactured with a sealing performance device. Such as bearing with dust cover, seals, etc. This seal takes up a small space, easy to install and remove, the cost is relatively low.

In order to maintain good lubrication conditions and normal working environment of the bearing, give full play to the working performance of the bearing and extend its service life, the rolling bearing must be properly sealed to prevent the leakage of lubricant and the invasion of dust, moisture or other dirt.<br>The sealing of bearings can be divided into two types: self sealing and external sealing. The so-called bearing self sealing is to make the bearing itself into a device with sealing performance. Such as bearing with dust cover, sealing ring, etc. This kind of seal occupies a small space, is easy to install and disassemble, and has a low cost.<br>