Mobile bearing if used in harsh environments, NSK bearings seals and sealing cap is essential, because they can prevent dirt intrusion, extension of the NSK bearing life. Rolling mill rolls are usually sealed by the four-row tapered roller bearing support. Use required to withstand strong impact loads, the intrusion of water and debris.
NSK bearings resulting in negative pressure can cause intrusion of water from the main seal, hole sealing structures had a greater impact on negative pressure. Therefore, reducing NSK
Negative pressure in the NSK bearings are basic requirements to prevent water entering. The most effective method is to make the hole sealing is not directly in contact with water, while retaining holes sealed original function – to prevent water and dirt from the roller neck side penetrated. Sealing method using surface contact instead of line contact, whether it is running, or static process, surface contact hole sealing with good sealing characteristics. Therefore, the new ultra-seal cleaning roller neck bearings of capacity than the traditional sealed journal bearings with higher reliability.
In addition, NSK bearings Italy seal company has recently developed a new generation of oils and seals. Its optimized design of seal structure can effectively prevent soil intrusion. Traditional seal radial seal outer diameter of the lips, and a garter spring between the seat and the fixed ring. New structure for a push the bezel between bushes and seals, sealing rubber on the outer surface and the inner diameter of the liner, lip waterproof grease for lubrication. According to operating conditions and applications request, made available a variety of flexible material. These materials include: nitrile, POLYACRYLIC acid resin, synthetic rubber, such as fluoride.


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