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Bearing seals and sealing cover is essential not less, because they can guard against dirt intrusion, extending bearing life. Rolling mill rolls usually consists of four sealed tapered roller bearings support. Walloping load requirements, water and debris intrusion suffered take advantage. Negative pressure generated in the rolling bearing can cause water intrusion from the main seal, seal the hole layout have a significant impact on the negative. Therefore, low negative pressure bearing is the fundamental requirement to prepare to enter the water. The most useful way is to seal the hole is not a direct fight with the water, while preserving the original hole seal effect - Preparedness water and dirt intrusion from the side of the roll neck. Seal essentials receiving line appearance substituted fight fight, whether it is running the course, as usual static process, appearance war bore seal has good sealing characteristics. Therefore, the new super-capacity sealed clean roll neck bearings than traditional sealed roll neck bearings have a higher reliability. Our rail traffic will grow quickly, localization rate has reached 96 percent of the rail vehicle, but as a key component of all overseas bearing the entrance to revitalize national industry, and domestic production to replace without delay. Call the whole room staff establish a "work hard, seek excellence, to build a world-class research capacity rail bearing production base," the faith, through the unremitting pleased to achieve a breakthrough soon on the project, glory for the country. Well production of high wire rod mill bearings production lines, product varieties to deal with the wire layout to achieve conciliation, promote economic growth and people have very intense significance. According to the survey, the domestic high-speed wire rod mill bearing orders have come mostly from the entrance bearing famous brand of kind product available, fine and high, wide compliance, but expensive, long delivery time, after-sales insecurity. Kingenta http://www.sdjinzhengda.com/ Installation Engineering Co., Ltd. of Tianjin http://www.tjazgc.com/