High-speed bearing installed special attention to the problems

High-speed bearing has two characteristics, one is high precision, is a high temperature resistant. So the high-speed bearing should be in accordance with the requirements for high precision bearing installation, and according to the high temperature bearings to install. So when installing high-speed bearing considering the coordination and bearing clearance. When installing a high-speed bearing should consider 2 points: hardness change caused by temperature rise; Caused by high speed rotating centrifugal force system and shape changes! To ensure the bearing raceway deformation after the installation is small, the amount of interference interference fit can't get too big, and under the high speed centrifugal force and high temperature thermal expansion, or on the surface of the offset with the normal pressure. Or make the matching surface relaxation, thus interference quantity must under the premise of considering these two factors determine prudently, effectively under the constant velocity of the amount of interference for high-speed bearing may be invalid. Calculation result if the conflict is too big, Usually it happens only under ultra-high speed) , only take ring lubrication and hydrostatic lubrication and lubrication measures, and this scheme has the potential to hit the 3 million mark DMN value of the bearing. On the surface of the high temperature thermal expansion, or offset with normal pressure. Or make the matching surface relaxation, thus interference quantity must under the premise of considering these two factors determine prudently, effectively under the constant velocity of the amount of interference for high-speed bearing may be invalid. Calculation result if the conflict is too big, Usually it happens only under ultra-high speed) , only take ring lubrication and hydrostatic lubrication and lubrication measures, and this scheme has the potential to hit the 3 million mark DMN value of the bearing. Install the necessary condition 1. Assembly site should be kept clean, no dust. 2. To avoid ina bearing from dust, moisture and contaminants - Pollutants have a bad effect on the running and service life of bearing. 3. Check the bearing hole and the shaft with the following: geometry and dimensional accuracy, and cleanliness. 4. For bearing ring mating surface coated with a little oil or a little fat. 5. To ensure that the shaft and bearing hole has a 10 degrees - Guide the chamfering of 15 degrees. 6. Don't be cool bearing: condensation of water can lead to bearing and the bearing of mating surface rust. 7. After installation, loading the ina bearing lubricant, check whether the bearing configuration is working properly.