Installed at both ends of the bearing surface has a corresponding sealing device, but many people do not know what effect the sealing device? Here we take a look at the sealing device for thin wall bearing what role. 

 

1, to keep inside the bearing grease (oil) will not be lost in use, ensure the bearing is lubricated state; 

 

2, dust or harmful gases to protect the bearing from outside does not enter the bearing cavity to prevent damage to the bearings. 

 

Sealing ring structure is varied, thus the sealing effect is different. There is a gap between the seal and the shaft, said non-contact seals, the smaller the gap, sealing the better, but the smaller the speed to allow the shaft; contrary vice versa. No gap between the seal and the shaft, said contact seals, lip seals contacting the contact area is larger, sealing the better, but the smaller the speed allows the shaft, on the contrary vice versa. The main contents sealing technology, research and development is applied to different conditions of the respective sealing device, and the ring material communion with the appropriate grease and so on.