(1) the requirements of high temperature bearing matching surface on the shaft and housing bore bearing mounting position, the surface roughness is more low, shape and position accuracy is better, is obtained with the rigid support is also higher. On the surface to strengthen the surface treatment, favorable to improve the rigidity. Using rough low degree of hardness plug, to certain interference in the lubrication state repeatedly gently pressed into and out of a hole, but also to improve the rigid support, when necessary cards available ring similar to journal.

(2) the bearing preload method improve the supporting rigidity of ball bearings and tapered roller bearings can take axial preloading method, while the short cylindrical roller bearing can take radial preloading method, can significantly improve the rigidity of the supporting shaft. At this point, or eliminate the bearing clearance, or small negative clearance. But the speed is not too high, the temperature rise conditions greatly, the best should be transferred to the state of small negative clearance. In the preload, suitable for continuous measurement of the deformation, pay attention to the low value between the deformation stage, with pre tightening load deformation increase is nonlinear; and in higher stage, deformation with the increase in load is linear. Once the deformation of a load linear relationship, it will immediately stop increasing preload, at this time has been to obtain a constant stiffness. Since then, there is a fixed relationship between the axial stiffness and the radial stiffness of the bearing, which is not dependent on the external load. The amount of deformation measurements can be made by using such as header 1000 arrives at proper positions of the end bearing or shaft and observe the reading with the method of pre tightening load changes. Pre tightening method has its disadvantages, such as the bearing friction torque increases, temperature rise, shorten the life and so on, so we must fully consider, weigh the pros and cons, select the appropriate preload.

(3) influence of configuration of bearing of the bearing arrangement on the rigidity of bearings is also great, generally said, for centripetal thrust ball bearings and roller bearings, the paired use the occasion to take the big end surface of the outer ring relative (i.e. the pressure line a pressure tip outwards) configuration, this kind of configuration of bearing anti overturning moment capacity, temperature changes in the adjustment of preload less change.

(4) with the support of multi bearing in the axial position of the conditions, each fulcrum using two or more of the bearings as a radial support, can increase the support rigidity.