Precision bearings according to ISO grading standards are divided into: P0, P6, P5, P4, P2. Rank higher in turn, where P0 is the general accuracy, other grades are precision level. Of course, different classification standards, different types of bearings, their classification method somewhat different, but the meaning is to the. The use of performance requirements of precision bearings rotating body with high runout accuracy, high-speed rotation and small changes in friction and friction.
2015年8月23日星期日
Mill Bearing Operation Technology
Including oil film Cross roller bearing parts store, cleaning, installation, commissioning, operation, maintenance, diagnosis, management, a set of knowledge and skills. Correct use of running technology, is a reliable guarantee for the safe operation of the bearing.
The early 1950s, China's only Angang cold rolling mill oil film bearing reversing mill equipment. Its operation and management, in full accordance with the relevant regulations of the Soviet Union was. The traditional process, the pressure is not rolling, rolling speed is low, the lubrication system is also very simple to run skill levels are relatively low. But in actual operation, the relevant management and technical personnel and operations workers work very seriously, in strict accordance with procedures to do, accumulated use, maintenance experience.
However, due to lack of understanding of the Four-Row Cylindrical Roller Bearing works, some less sensible procedure has been followed for almost two years, for example, after bearing parts installed, do pressure test 35N / cm2, if the oil spill, which tighten rotary sealing, until no leakage so far. However, such a pressure test after adjustment, the effect is not good to use, but, seal life is short. This seal is with the skeleton of "J" type seal, is to rely on lip seal, pressure test immediately after the transfer, it is no longer lips sealed, but a stubbornly clinging to the surface of the sealing strip rotation. But after all fundamental, successfully run oil film bearing, or start from here.
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