raceway special processing methods and heat treatment technology

Currently, the domestic development and production of main gearbox bearing fan bearings and motor bearings, but still below standard performance and longevity. Thus, about 90% of the gearbox bearings and motor bearings are still dependent on imports. Yaw bearing assembly and the fan shaft bearing assembly is still being developed, in addition to domestic Luo axis, ZWZ other large state-owned enterprises have a small trial, few manufacturers, basically a domestic blank.
Developed in the fan taper roller bearing, the main technical difficulty is required to achieve long-life sealing structure and greases, raceway special processing methods and heat treatment technology, special cage design and manufacturing methods. Domestic current level of technology, compared with foreign advanced level there is a big gap, but in recent years some of our research units in these areas have made some groundbreaking research, which must be accelerated process of localization of fan bearingsWith the development of new energy applications, as a new energy in the early development of wind energy in the grid occupy an increasingly large proportion. Meanwhile, more and more manufacturers have developed a variety of wind turbine hosts, in order to enhance its product competitiveness on the market, from the drive chain design improvements to various parts of the different functional considerations, have become wind turbine design improvements hosts different considerations.
As main components of a wind turbine, the bearing has been the choice of the host are most concerned about the manufacturer, either the design of the bearing itself, or the selection of the bearing arrangement, both the host determines the wind turbine operating performance and service life.
As the wind turbine operating conditions complicated, expensive mainframe maintenance, to ensure the reliability of its operation, that is the life of wind turbines, has been troubled by the host manufacturer of important issues. Wherein the application of the bearing efficiency of the host is extremely important. Therefore, based on the complexity of the wind turbine, SKF and developed specifically for a special bearing, namely "Nautilus" bearing - a kind of special large contact angle of the double row tapered roller bearings