What are the classification and characteristics of bearings and seals?
Bearing sealing device generally divided into contact and non-contact seal seals two types.Non-contact seals include different seal structures such as gap, labyrinth, and dust cap seals.Because the seal is not in direct contact with the shaft or the mating part, it can be used to seal the bearing at high speed.
Classification and characteristics of non-contact sealing ring:
|Non-contact seals||Sealed form||Characteristic|
|Gap type||Crevice seal ring
Groove seal ring
W line sealing ring
|The longer the axial width, the better the sealing effect
There is a groove on the mating surface of the end cap
The lubricating oil can be thrown back by lubricating oil.
|Labyrinth||Radial labyrinth seal
Axial labyrinth seal
Combined labyrinth seal
|Compact radial size for dirty environments
The curved road stretches in the radial direction, the bending is not easy to be excessive, and the disassembly is convenient
Small footprint, low cost, good combination sealing effect
Contact seals classification and characteristics：
|Contact seal||Felt seals||For grease lubrication, bearing seals in clean environments, temperature not higher than 90 degrees Celsius|
|rubber sealed loop||Have lip outward, inward and double lip structures|
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