The speed of rolling bearing has certain restrictions

The speed of rolling bearing has certain restrictions. Bearing running, the friction velocity, the higher the bearing temperature. Speed limit is the experience of spherical roller bearing value of the maximum velocity continuity, no seizures or generation of overheating. Bearing limit speed and different factors, therefore, as a bearing type and size, cage and material, load, lubrication and cooling methods including bearing design environment. Grease lubricated bearing limit speed and oil bearing listed in the table. Limit the speed in the table is suitable for the bearing standard design and normal load, I. C/P&ge namely; 12日,a / F r≤ 0. About 2. Limit bearing of listed in the table used for conventional oil bath lubrication oil lubrication speed. Some types of lubricant is not suitable for high speed, even if they may be significantly superior to other aspects. At a faster rate than 70% when the speed limit listed, it is necessary to choose an oil or grease, has the good characteristics of high speed. The speed of rolling bearing has the certain limit working conditions for the brand and performance of the grease 1 speed correction when P more than 8% of the basic load bearing load grade C, or when the axial load F a more than 20% when the radial load F r, speed limit must be multiplied by the limit speed of bearing the correction factor in the table. 2. When the required speed exceeds limit speed required for bearing; The precision grade, internal clearance, cage and materials, lubrication, etc. , must study carefully in order to choose the speed of the bearing can meet the required. In this case, the circulating oil lubrication and oil lubrication, oil mist lubricating oil must be used or lubricant oil and gas. If taking into account all of these conditions. The maximum allowed speed can be found by multiplying prompt in bearing limit speed correction factor. It is suggested that high-tech consulting bearing. 3. Contact rubber seal of the limit on the maximum allowable speed of rubber seal ball bearing contact bearing ( DDU) Is mainly composed of the sliding surface within weeks speed seal. Speed limit the value of the column in the bearings.