Analysis the main cause of IKO miniature bearing raceway noise

At the time of use of miniature bearing, we often heard a noise inside the raceway, the reason is we don't know before, in order to understand the IKO bearing knowledge through the experiment we come to the conclusion that the following will help you to analyze the reason together. 一个。 Randomness of noise and vibration; b。 The vibration frequency above 1 KHZ; c。 No matter how the speed of change, the main frequency noise almost unchanged while the sound pressure level increase with the increase of rotational speed; d。 When the radial clearance increases, the sound pressure level increased dramatically; e. Miniature bearing stiffness increases, the lower the total sound pressure level, even if the speed increases, the total sound pressure level increases; f。 Lubricant viscosity is higher, the lower the sound pressure level, but for grease lubrication, the viscosity, the shape of soap fiber size can influence the noise value. Because of the ring and rolling body elastic contact nonlinear vibration system. When lubrication or the machining accuracy is not high will stimulate the related to the elastic characteristics of natural vibration and passed to the was noise in the air. As is known to all, even if is to use the contemporary the most advanced manufacturing technology and processing miniature bearing parts, there will always be the working surface of varying degrees of tiny geometric error, thus make the raceway and rolling body produces slight fluctuations inherent vibration excitation vibration system.