Long mill bearing application characteristics analysis

Analysis of 2018 - long mill bearing application characteristics 07 - With 31 steel of high yield and small mill production, alloy steel and high-quality steel bar mill, the market volume increased production of rolling mill, section mill, speed, improve segmentation process and so on a series of process, especially the popularization and application of short stress mill, mechanical assembly, this requires the roll system bearing must make the necessary internal structure optimization, to meet the new demands and assembly process. Based on years of custom hot rolling bearing high speed wire rod, bar, such as steel, as well as provide on-site technical service, in view of the long mill bearing the following structure optimization, to achieve longer bearing life and more stable operation. Bearing radial clearance, bearing rotating accuracy level provided by the p5 and bearing clearance are in C4 group lower limit value, which ensure the working condition of demand and the maximum guarantee the bearing has the largest bearing area, the largest bearing radial load. For roughing, roughing mill is characterized by slow, large load, huge impact, request bearing primary has higher bearing capacity, can increase the bearing capacity of bearing greatest extent, such as: adjust the internal structure, the reasonable increase, big, much, long rolling body, strengthen the cage strength, increase the storage space and so on. The adjustment of internal structure of both increasing the radial bearing capacity, and enhance the impact resistance ability. Representative models: for medium mill: the roughing speed faster, low load, but the impact is bigger, need to adjust the right bearing clearance and the thickness of the outer ring and outer ring with the fit tolerance, box also maintains a need to increase the thickening to achieve enhanced strength, eventually improve the comprehensive life of bearing and stability operation. Representative models: in view of the early finishing: a faster speed of rolling and load reduction, but smaller, especially bearing cage, more broken teeth, eight deformation problems, so the demand bearing primary has high rotation precision and high strength and rubbing retainer, the key to keeping feet high, tooth thickness and improvement of material, such as changing brass cage machining steel and maintains a rolling body package rate against doing 15%, etc. , our company have more valuable experience and examples. Representative models: in view of the assembly, mechanical assembly, in particular, must control the rolling element bearings relative to their degree of prolapse, avoid the rolling element bearing assembly process intervene with the inner ring with roller diameter cut ceng scratch problem. （ Jiangsu emperor mond rolling mill bearing)