In the present domestic bearing market, bearing the brand variety, but involves the medium and high-end bearing market, are often rare domestic bearing, but mainly imported bearing, especially Germany imported bearing, occupy a considerable part of the domestic high-end market. What are the difference of domestic bearing and imported bearing? Especially the domestic bearing with Germany imported bearing what are the differences?
First on the precision of the bearing, the size deviation and rotating precision of domestic bearing though and imported bearings have been very close. But with the German import bearings, there is still a gap on the discrete degree. Such as “not repeatable beating” such fine rotation precision index, is already abroad research and application, while in China the research is almost blank.
Secondly in terms of vibration, noise and different tone, Germany imported bearings and other countries imported bearing has launched silent and silent bearing, China bearing vibration of extreme levels compared with imported bearings, usually to a difference of more than 10 db.
Again, in the life and reliability, deep groove ball bearing, for example, foreign brand products generally for calculating the life of a life of more than 8 times (up to 30 times more), reliability is more than 98% (or the pursuit of life, such as host), and the life of the Chinese bearings are generally only for calculating the 3 to 5 times of life, the reliability is approximately 96%. In addition, the performance at high speed, the foreign brand products of DmN value up to 4 x 106 mm r/min, while China bearing is only 2 times 106 mm r/min.
Described above is the difference of domestic bearing with Germany imported bearings, of course, we are not negative domestic bearing’s achievements in recent years, but hope to find the gap in the contrast, so as to find the path of ascension further, our “made in China” industrial products into a world famous brand.