Tapered roller bearings are separable bearings, bearing inner and outer rings with tapered raceways line. These bearings are mounted on roller rows into single row, double row and four row tapered roller bearings, such as different structural types. Single row tapered roller bearings can bear radial load and axial load in one direction. When the bearing radial load
2013年9月2日星期一
Domestic and imported bearings bearing the distinction
In recent years, some of our mechanical and electrical products supporting Tapered bearing are on the rise, especially in the railway, metallurgy, mining, aerospace and automotive, and even home appliances is particularly evident on the host. The reason for the introduction of mainframe maintenance of existing facilities, the joint venture products supporting reasons, but also the relevant domestic industries blind Worship and other reasons. "WTO", the foreign-owned or joint ventures will certainly further increase in imports of bearings will undoubtedly open the door, coupled with multinational products, technology, life, service, marketing network and ideas are better than domestic, so the bearings amount of exports will likely exceed the bearing. Imports from the bearing species, mostly imported high-precision, high reliability and special bearings, there are some general bearing. Domestic production of bearings and bearings compared to the technical performance, quality, level and so there is a certain gap with foreign products.
Imports from the country to see, mainly from Japan, the U.S. and Western European countries, including Japan alone accounted for 56.94 percent the amount of imported bearings. China imported bearings are mainly used in the field:
1, in order to focus on supporting host, maintenance. These bearings due to its accuracy, reliability requirements, OEMs using imported bearings. At the same time these bearings are mostly small quantities, varieties, coupled with high technical requirements, generally difficult to domestic production.
2, a number of OEMs (appliance industry) are more used to the whole quality of imported bearings, such as household appliances, low noise sealed ball bearings.
3, some of the high and new technology areas, such as aerospace, instrumentation, CNC machine, VCR, etc. required for high-precision bearings.
4, car bearings. Car bearing in China started late, could be said to basically blank. Now the domestic bearings supplied by foreign joint venture approved only part of the vehicle used, not mass production, the vast majority of car bearings need to be imported
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