No bearing distance ，no progress.

In the aspect of vibration, noise and abnormal sound. Japan has launched a mute and super mute bearing, while the extreme horizontal vibration China bearing compared with Japan bearing, general is above 10dB.

  In the aspect of life and reliability. Taking the deep groove ball bearing as an example, foreign brand-name products typically live for the life calculation of more than 8 times(highest up to over 30 times), the reliability is above 98% (or pursuit and host life), and Chinese bearing life generally only for the calculation of life expectancy of 3 to 5 times, the reliability is about 96%.

  In the precision of the bearing. Domestic bearing size deviation and rotation accuracy although and imported bearings have been very close, but with the SKF bearing imports also has certain disparity in the discrete degree. Foreign countries have already begun to research and application of "non repeatable runout" rotation accuracy index of such fine, and China research in this area is still a blank.

  In the high speed bearing performance of foreign famous brand products, the DmN value of 4 by 106 mm r/min, and China bearing is only 2 by 106 mm r/min.

  No matter how long the distance is,China is always trying to keep up with the world ,and never stop.Just like LYHY bearing,one part of China bearing.