Bearing seal

Additional sealing means bearing can effectively prevent the invasion of foreign matter, but such an additional axial sealing means will increase the size of the liner in large organizations, and the bearings for installation and maintenance inconvenience, while the sealing performance and also by the shaft diameter housing mating parts machining accuracy and bit line bearing plant tolerance of. The bearings with sealed bushings can either have a good seal lubrication environment, but also solve the problem of supporting parts, as well as eliminating the need for complex lubrication system. So in a compact structure, sealing demanding parts are recommended to use sealed bearings. In addition to bearing the seal itself has a good dust, sealing effect, but also in the bearings during operation does not supply lubricant to maintain a good operating condition, reducing maintenance costs.

Bearing self-sealing form of the structure divided into contact and non-contact seal. Press contacts can be divided into radial and axial seal seal. Press the seal structure can be divided into single-lip seal and double lip seal. Non-contact seals are generally two kinds of seals with a dust cover and rubber. Dust cover seal gap, only suitable for dust, small rubber ring seal the gap, a better sealing effect. Contact seal bearing rubber seals generally only very secondary parts. Rubber lip seal is affixed together with certain parts of the rotary bearing interference exposure, and thus play a good dust sealing effect, but the speed limit and a lower friction torque is large.