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Second super capacity sealed improve cleaning roll neck bearing performance, is the use of the SuperTF bearing steel developed by NSK company. This material to solve the problem of pollution or lack of lubrication conditions of the bearing life. Experience shows that, in pollution operation conditions, vulnerable to invasion and pollution bearing clastic. Research of NSK company shows that the bearing life in pollution or boundary lubrication conditions could be improved by micro structure improvement of bearing steel. The new sealing structure sealing and hole sealing.
The negative pressure generated in the bearing can cause water seal invasion from the main hole sealed, 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 without direct contact with water, while retaining hole sealed original function -- to prevent water and dirt from invading 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 the characteristics of good sealing. Therefore, super capacity of new seal clean roll neck bearings with higher reliability than the traditional sealing roller bearing.
In addition, SKF Italy sealed the company recently developed a new generation of oil and grease sealing ring Mud Block. The optimization design of seal structure can effectively prevent the intrusion of dirt. Traditional sealing structure for sealing a radial one clamping spring and a fixed sealing ring between the lip, outer diameter and seat. A new structure for a push plate between the Bush and a sealing ring, sealing ring and the outer surface of rubber bushing diameter, inner lip with waterproof grease pre lubrication. According to the requirements of the operating conditions and the application of Mud Block, made by various elastic material. These materials include: acrylic, polypropylene acid ester, fluorinated synthetic rubber.