Our vibration grading standards currently JB / T7047 --- 93 "deep groove ball bearing vibration (acceleration) technology" and JP / T5009--94 "deep groove ball bearing vibration (velocity) technical conditions." These two standards have been revised several times, the industry bearing vibration reduction work has played a good role. But now not only requires the user to increase the issue Z4 group, VI group. More importantly, the proposed user to avoid bearing abnormal sound or noise requirements reflected how the standard, abnormal sound and noise is an irregular or sudden burst of unpleasant stimulus. The reason is nothing more than chase Since the rolling surface is almost injured, a foreign body in the lubricant, cage and rolling elements irregular friction caused from the received signal is pulsed peak. However, the two bearing vibration technology standard Currently we executed, although points Z1, Z2, Z3 group and V1, V2, V3, tempo-type band even three points, but the values are taken are valid values (basically close to the arithmetic mean), abnormal sound, noise vibration pulse peak is not reflected.