(Referred to below Los axis) railway bearings division shop display case in Luoyang LYC Bearing Co., Ltd., placed three sets of different specifications of the metro vehicle axle box bearings. In layman's view, these bearings and other plain bearings are not very different, in railway bearings division assistant general manager Luo axis Chen Guangsheng opinion, these three sets of bearing all are treasures, they carry the body of metro vehicle axle box bearing "domestic dream." (Above)
Metro vehicle axle box bearings are a key rail transportation equipment, basic parts, as foreign enterprises to implement technological monopoly, metro vehicle axle box bearing the domestic use of long-term dependence on imports.
Metro vehicle axle box bearings to achieve localization of Los axis from 2000 began development work axlebox bearings. In 2004, Los axis developed the first set of axle box bearings available and applied in a certain city, Metro Line 1 vehicles operating in 2008, to repair the vehicle, the sleeve bearing accumulated running 399,713 km, and with the use of state vehicles bearing There was no difference of imported bearings.
"The first set of bearings can be said to fill the gap, creating a new era in the development of China bearing." Chen Guangsheng said. In 2014, Los axis on the basis of upgrading the first set of axle box bearing on the development of the second axle box bearings. This is a cylindrical roller bearings for maximum operating speed of 120 kilometers per hour subway train, the rated life of up to 2.4 million kilometers.
However, Luo axis developed metro vehicle axle box bearings in order to replace imported products is not an easy task. Some domestic companies not only use the subway international giants bearing offerings, and Annealing unloaded bearing maintenance are all rely on these foreign companies.
In order to further open the domestic market metro vehicle axle box bearings, 2012, Los axis in one fell swoop to sign Guangzhou Metro Line vehicle axle box bearing a three-year maintenance contract. Luo axis repaired by stable bearing performance, safe and reliable operation, the Los axis has won industry recognition.
In the first half of this year, Luo axis successful production of the third set of metro vehicle axle box bearings. "MTR peak passenger vehicle overloading is common, before loading the new model is bigger than two, higher safety factor." Said Chen Guangsheng, new precision machining, heat treatment and other aspects of optimization, ensure international bearings Big production of the same product level.