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Influence of NTN imported bearings on the production of domestic mechanical kits
2021-10-16The market is conveying a message to us: NTN imported bearing technology is the productivity, the source power for the life development of domestic accessories, and the sharp weapon of "success in the first place"! As the "barometer" of the construction machinery accessories industry, the mature skills of loader accessories in China show clear weaknesses, "making contributions to social improvement through trade" is the goal that Mitsubishi Heavy Industries has always pursued.
At the recently held igas2007 (International Printing Machinery Expo), the company exhibited a series of new products and new skills, and wanted to improve the productivity and printing quality of the printing press. Urgent need for both exterior and interior repair to embark on the promotion journey; The central skill bottleneck of the machine accessories, such as choking in the throat, hydrostatic transmission skills and load sensing conditioning skills; We should cultivate large-scale supporting parts enterprise groups with strong strength and economic planning after asset restructuring or M & A; To break the hydraulic components of the hydraulic excavator, especially the variable piston pump, motor and its matching reducer, as well as the chip or all type multi-way valve, high-pressure oil cylinder and other central skills; Breaking hope and small excavation has become the only way. The oil film bearing series manufactured by Taizhong basically covers all kinds of large-scale oil film bearings in the world. It has a share of more than 80% in the domestic market and is exported to 9 countries such as Germany and Japan. It can supply all kinds of oil film bearings for any steel factory in the world.
Take loader and excavator accessories as an example. Although NTN imported bearings are the initiator of domestic loaders, it is more necessary to break the cutting-edge skills such as microcomputer integrated control and full hydraulic drive of loader transmission; Only in this way can China's construction machinery accessories industry present more well-known brand enterprises and remain invincible in the market competition! The development of central accessories such as transmission and drive axle is relatively mature, the skill barrier has been broken, and the major parts manufacturers have their own patented products. However, this is only a micro "skimming on the water". Subdivided from the micro level, the pressure of the hydraulic system of loader accessories can not meet the international norms, there is no responsive distribution valve, and the reliability of the hydraulic pump is not optimistic; In the transmission system, the transmissions and axles below 3T and above 6T are still lagging behind, especially in the mainframe; There is still no basic treatment for a series of problems with the high failure rate of electrical components. As the "soft rib" of domestic excavators, the quality control skills of the main valve are monopolized by foreign brands such as Kawasaki and Komatsu. All the variable systems and various components required for small excavators within 30MPa and below 10t rely on imports.