Sound and control the impact of larger models rolling element ball bearing or cylindrical roller bearings at low speed in a pure radial load, due to the centrifugal force of the rolling elements smaller roller bearings, rolling elements in non-load zone will the impact of cage or raceway and noisy. However, the higher the speed, the sound will disappear. The method of controlling the impact of sound rolling elements are: appropriate to reduce the radial clearance, the use of a reasonable structure of supple material bearing cage. NTN bearing additional sealing means can effectively bearing in dirt from outside intrusion in good condition to work aligning roller bearings picture, but the additional sealing device increases the axial dimension of aligning mechanical mechanism roller Bearings sales agents, the use of bearings and installation inconvenience spherical roller bearings price, while additional sealing means sealing performance is often matched by the journal and the housing parts of the precision influence and shape and position tolerances, for the compact, sealed demanding parts, such as motor support bearings, deep groove ball has been used in the amount with sealed bearings. NTN Bearing in addition to good sealing performance outside, but also in the whole process of bearing operation without supply of grease kept in good running condition, thereby reducing maintenance costs and working hours. Spherical roller bearings wholesale _ 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.