Raceway sound is due to the rotating rolling element bearing NTN rolling in raceway and stimulate a smooth and continuous noise, the level or tone when aroused great attention only when. In fact, inspired by the raceway sound acoustic energy is limited, as in normal circumstances, bearing raceway sound quality is 25 ~ 27dB. This noise with radial load single row deep groove ball bearings for the most typical roller bearing, which has the following characteristics: a noise, vibration is random; b vibration frequencies above 1kHz; c speed regardless of what changes... Main frequency noise and the sound pressure level is almost constant increases with the speed increase;. d When the radial clearance increases Spherical roller bearings sales agents, a sharp increase in the sound pressure level; e NTN bearing rigidity increases. The more low-key overall sound pressure spherical roller bearings wholesale, even if the speed increases, the total sound pressure level increases much;. f the higher viscosity of the lubricant, the more low-key SPL spherical roller bearings price, but for grease lubrication viscosity, soap fibers noise can affect the shape and size values. Under normal circumstances noise, mostly occurs at low speeds and radial load of large bearings. When NTN bearings operating under radial load, load bearing and non-load zone area, if the bearing has a radial clearance, rolling non-load bearing area is not in contact with the inner race, but the effect of centrifugal force may be associated with contacting the outer end, at low speeds, when the centrifugal force is less than the weight of the rolling elements, the rolling elements and the inner race falls or collisions cage and stimulate the natural vibration and noise NTN Bearing Spherical Roller Bearings | Roller Bearing | Long Yu provided by the Dongguan City, Long-Bearing Machinery Co., Ltd. Dongguan City, Long-Bearing Machinery Co., Ltd. (long-yu.net) strong, credible, in Dongguan, Guangdong thrust roller bearings and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Long Yu and you hand into the brilliant, for a better future!