Because the accuracy of the precision slender shaft is within 1 μm, it is required to achieve a certain dimensional accuracy and shape accuracy with the matching parts during use. The precision of the precision slender shaft should be controlled at the same level as the bearing. This is very critical.
If the matching parts of the precision slender shaft do not meet the above requirements, the error of the original bearing will be several times larger than the error of the original bearing, or even 10 times the error, and it will not be a precision slender shaft at all. The reason is that the matching machine The error of the parts is often not simply superimposed on the error of the bearing, but added after being amplified by different multiples.
In order to ensure that the bearing does not produce excessive deformation after installation, the roundness of the shaft and seat hole and the verticality of the shoulder must be required in accordance with the accuracy of the bearing during use.
In the process of using the precision slender shaft, it is necessary to calculate the interference of the rotating ferrule and the appropriate fit of the fixed ferrule. The interference of the rotating ferrule should be kept as small as possible. As long as the effect of thermal expansion at operating temperature is realistically guaranteed.
