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If the flow of bearing for use in harsh environments, bearing the sealing ring and the sealing cover is essential, because they can prevent dirt intrusion, prolong the life of bearing. Roll of rolling mill is usually composed of four sealing taper roller bearing support. Intrusive use requirements under strong impact load, water and debris.
NSK Japan developed super easy to seal the cleaning roller bearing. This kind of bearing in the lubrication of harsh conditions, the load is increased by 34%, and high reliability, long service life, easy maintenance. To improve the performance of the optimization of mechanical design, the use of new materials and sealing technique results in patent. Compared with the roll neck bearing the traditional, the neck seal bearing not only the basic dynamic load rating increased by 34%, and service life is prolonged by 2.7 times.
Second factors to improve the performance of super capacity sealed cleaning roller bearing, is SuperTF bearing steel NSK developed by. This material to solve the problem of the bearing life in pollution or lack of lubrication conditions. Experience shows that, in the contamination under operating conditions, the bearing is susceptible to debris invasion and pollution. Research of NSK company shows that the bearing life in pollution or boundary lubrication conditions can be improved by microscopic structure improvement of bearing steel. The new sealing structure sealing and hole sealing.
The negative pressure generated in the bearing can cause water invasion from the main hole sealing, sealing structure has a great influence on the negative pressure. Therefore, reduce the negative pressure in the bearing is the basic requirements to prevent water entry. The most effective way is to seal the hole is not directly contacted with water, while retaining the hole sealed original function -- to prevent water and dirt intrusion from the roll neck side. Sealing method using surface contact instead of line contact, whether it is running, or stationary process, surface contact hole sealing has good sealing performance. Therefore, super capacity of new seal cleaning roller bearing has a higher reliability than the traditional seal roll neck bearing.
In addition, SKF Italy sealed the company recently developed a new generation of oil and seal ring. The sealing structure of the optimization design can effectively prevent the intrusion of dirt. Traditional sealing structure for a radial seal with a clamping spring and a fixed sealing ring between the lip, outer diameter and seat. The new structure has a baffle between the Bush and a sealing ring sealing ring, outer surface and inner diameter of inner lip liner rubber, waterproof grease for lubrication. According to the requirements of the operating conditions and the application, can be made of elastic materials. These materials include: nitrile, polyacrylate, fluorinated synthetic rubber.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 32956XUE1 NTN | 280 | 380 | 63.5 |
| 32052XU NTN | 260 | 400 | 87 |