Sound of a large roller bearings, the rolling sound pressure level decreases with increasing viscosity; and sound of a small roller bearings, the level increased in viscosity to about 20mm2 / s or more when spherical roller bearings picture, to be increased by the reduction. Bearing rigidity, the lower the total sound pressure level raceway. The radial clearance is too small, total sound pressure level raceway and the main frequency will decrease as the radial clearance increased dramatically. Control raceway sound methods are: selection of low-noise INA Bearing namely waviness of bearing a small, carefully selected conditions of use. Often affect the entire raceway mechanical sound noise roller bearings, reducing raceway sound you can reduce the overall mechanical noise. Parts of mechanical bearing spherical roller bearing price, NTN bearings should be positioned with different requirements fixed in three directions (tangential) in radial, axial and circumferential. Under normal circumstances, the bearings axially fixed part is the use of radial or axial closed tight fit to achieve self-aligning roller bearings sales agents, import bearing mechanism supporting the free side often not be fixed in the axial direction, in order to Compensation body system in the axial thermal expansion and contraction during installation or dimensional changes. NTN Bearing radial and tangential fixation methods, usually by the inner and outer diameter of the shaft and the bearing bore bearing fit to achieve. Individual agencies, such as the rolling conveyor roller negative long axis drive mechanism support bearing, with the key to limiting the form of tangential bearing inner ring. Shenzhen Spherical roller bearings supplier, Long Yu (certified), roller bearings provided by the Dongguan City, Long-Bearing Machinery Co., Ltd. Dongguan City, Long-Bearing Machinery Co., Ltd. (long-yu.net) Dongguan, Guangdong, thrust roller bearings leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the Long-leadership with the staff warmly welcome all inquiries negotiations to create a better future Long Yu.