Floating bearings if used in a harsh environment, bearing seals and seal covers are needed, because they can prevent dirt intrusion, extend the life of the bearings. In mill roll usually is supported by four columns sealed taper roller bearings. When using requirements under strong impact load, the intrusion of water and debris.
The influence of external environment on FAG bearings includes the following two aspects:
1, temperature: the influence of temperature on FAG bearing, using high temperature often said bearing is in abnormal situation. High temperature is also harmful to FAG bearings size http://www.fagbearings-hk.com/ lubricant. Sometimes the fag bearing overheating can be classified to fag bearing of lubricant. If the bearings are working in a temperature of more than 125 ℃, bearing life will be shortened. The causes of high temperature bearing include: lubrication inadequate or excessive lubrication, the lubricant. Contains impurities, heavy load, fag bearing ring, clearance, high friction and oil seal and so on.
2, vibration, vibration damage in FAG bearings can be said to be quite sensitive, peeling, indentation, rust, crack and wear will be reflected in the FAG bearing vibration measuring. So, through the use of special bearing vibration tester (frequency analyzer, etc.) can measure the size of the vibration, through frequency points cannot deduce the abnormal situation. Measured values of bearing or sensor installation position and different using conditions, thus requiring prior to each machine is analyzed by the measured value of the determined after judgment standard.

Japan FAG company developed super easy to seal the neck of cleaning roller bearing. This kind of bearing lubrication in harsh conditions, load volume increased by 34%, and high reliability, long life and easy maintenance. This improvement is to optimize the performance of mechanical design, using new materials and patent the results of the sealing technology. Compared with the traditional roller bearing neck, this kind of sealing roller bearing neck is not only the basic dynamic load rating increased by 34%, and 2.7 times longer service life.
Super capacity seal clearer the second factor to improve the performance of journal bearing, FAG company developed Super - TF is adopted the bearing steel. This material has solved under the condition of pollution or insufficient lubrication bearing life problems. Experience shows that under the condition of pollution operation, bearings are susceptible to debris intrusion and pollution. FAG company research shows that on the edge of the pollution or lubrication bearing life can be improved under the condition of bearing steel microstructure and improve. The new seal structure is given priority to seal and hole sealing.
Bearing of negative pressure can result in water from the main sealing intrusion, hole sealing structure has a great influence on the negative pressure. Therefore, reduce the negative pressure in the bearing is to prevent the water into the basic requirements. The most effective way is to make the hole sealing no direct contact with water, while retaining the original function, prevent dirt and water hole sealing from roll neck side. Sealing methods for line contact surface contact, whether it's running process, or stationary process, surface contact hole sealing are characterized by the good sealing. As a result, the new super capacity sealed cleaning roller bearing neck than traditional sealing roller bearing neck has higher reliability.
In addition, SKF Italy sealed the company recently developed a new generation of oil and grease seal Mud Block. The optimization design of seal structure can effectively prevent the invasion of the earth. The traditional sealing structure features a radial sealing lip, outer diameter and seat between a clamping spring and the fixed sealing ring. New structure for the bushing and there is a push baffle between sealing ring, sealing ring liner and outer surface of inner diameter of the rubber, the lip is prelubricated with waterproof grease. According to the operation conditions and application requirements, Mud Block can be used all kinds of elastic material. These materials include: acrylic, polyacrylic ester, in fluorine rubber, etc.