Special roller

Special cylindrical roller idler radial runout, axial load, axial movement, drop test, also roller standard performance indicators. These indicators, with general production capacity of enterprises can be done, but not roller key technologies. Core technology is divided into at least two rollers: a first core technology is the manufacture of precision roller. Before 1995, domestic roller bearing is made of cast iron, the pipe ends stepped hole machining, interference press-fit production; after 1995, and gradually improve the use of stamping bearing, pipe ends machined small body stepped hole, carbon dioxide gas welding production. Both processes can not guarantee that every roller bearings at both ends of coaxial position ≤0.05mm, large rotational resistance not only idlers, bearing life is also greatly reduced. The second core technology is corrosion resistant roller tube body. In the steel industry, coke, sinter, pellets, slag wear very serious, roller .5mm thick steel pipe body is ground off the shortest period of only ten days, an average of about six months; in the coal mine, According to the different sulfur water, steel pipe body rollers, the most serious corrosion rust nearly a month 1mm, typically about 0.3mm. Often see bearings and other are good, wear and corrosion are rotten roller tube, "a messy, miserable" in the coal mines. Austrian Hebei Machinery Manufacturing Co., Ltd. Website: www.hbaohuatg.com Tel: 0317-5128282 Mobile: 18134377317 welcome to call us, look forward to your talks!