In parts of the design phase, in addition to take general measures to increase its strength, can also through the following some measures to improve the fatigue strength design:

1. As far as possible to reduce the influence of the stress concentration on the spindle. This is the primary measures to improve the fatigue strength and the main way. And the structure of the spindle shape and size of mutations (such as shoulder) is the source of the stress concentration structure, therefore, in order to reduce the stress concentration, should try to reduce the parts (i.e., the spindle) structure shape and size of mutation as smooth as possible and even make it change. To this end, to the radius of the increase of the transition point as far as possible; The same period of shaft adjacent cross-section rigidity change should be as small as possible, and so on. The inevitable to generate large stress concentration of structure, load reducing groove can be used to reduce the influence of stress concentration.
2. Choose high fatigue strength of materials and can improve the fatigue strength of materials as prescribed in the heat treatment method and strengthening technology.
3. Improve the quality of the surface of the spindle. Such as in high stress area of the surface of the spindle machining are more bright and clean. Or, if, some shaft section, working in a corrosive medium, are appropriate for the shaft section rules surface protection.
4. As much as possible to reduce or eliminate the spindle surface may be the initial crack size, to extend the fatigue life of having the effect that improve the material performance is more significant. Therefore, for important shaft section, on the design drawings should stipulate the strict inspection methods and requirements.
5. Cool, reducing load, friction pair of journal for fever take cooling design, also can significantly increase its fatigue life. Because the spindle is a rotating part, so, after running a certain number of cycles under low stress, then gradually increase to the design of the stress level. Because of bearing, some commonly used bearing in particular, is mainly refers to some of the rolling bearing, most have been standardized, therefore, we need to be part of the design content, according to the specific working conditions, correct selection of bearing type and size. Another is the combination of bearing design, it includes installation, adjustment, lubrication, sealing and a series of content design.

Welcome to our company to choose high quality high configuration of broken products. Can seek advice website customer service for details.