The installation method of high-speed FAG bearings

High-speed FAG bearing cooperate with installation and adjustment: 1. High-speed FAG bearing and clearance with high speed should be in accordance with the requirements of high precision FAG bearing FAG bearing, and according to the requirements of high temperature FAG bearing, so when considering its coordination and clearance, to consider the following two points: ( 1) From normal temperature to high temperature when the size of the change and hardness change; ( 2) Under the high speed centrifugal force caused by the force system and shape changes. All in all, under the condition of high speed, high temperature, from the choice of coordination and clearance to strive to maintain a FAG bearing precision and work performance, it is difficult. In order to ensure that FAG bearings after installation of raceway deformation is small, the interference fit interference quantity cannot 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 FAG bearings 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 FAG bearing value of DMN. 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 FAG bearings 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 FAG bearing value of DMN. When considering the high-speed FAG bearing clearance not only should consider the above-mentioned factors, and to consider the influence of the axial thermal elongation of clearance, FAG bearing under working state, namely in the working temperature is the best clearance, clearance is, and this, the outer ring groove ball center accurate registration form of the condition. Due to high-speed FAG bearing makes every effort to reduce the relative sliding and internal friction, had better not use relative displacement of the inner and outer ring along the axial approach to adjust the ball FAG bearing clearance. Considering the FAG bearings with the interference and clearance, be aware that materials at high temperature becomes soft and easy to deformation characteristics, and many times caused by the temperature change of normal temperature to high temperature must be the possibility of permanent deformation. 2. To host related parts demands high-speed FAG bearing FAG bearing in rotary system after dynamic balancing precision, shaft and hole FAG bearing installation of the parts should be higher than the general requirements of dimensional accuracy, form and position accuracy, especially the alignment of the hole or shaft neck and shoulder vertical degree, and to think about these problems, also must pay attention to the high speed and high temperature factors in the operation of FAG bearings. Shaft bearing system requires both high rigidity, asked for a light quality as much as possible, in order to overcome the contradiction, can take measures such as reducing the surface roughness and improve the surface strengthening in order to improve the bearing stiffness, using hollow shaft to reduce the system quality, etc.