南京NSK轴承验证中需要满足的设计约束主要是为了避免轴承失效，确保轴承在规定的时限内正常工作。在正常情况下，轴承在不同条件下的主要失效形式不同。
The design c***traints needed to be met in Nanjing NSK bearing verification are mainly to ***oid bearing failure and ensure that the bearing works normally within the prescribed time limit. Under normal conditi***, the main failure modes of bearings under different conditi*** are different.
此外，安装、拆卸和操作不当也可能对轴承部件造成损坏，如损坏，应避免。
In addition, improper installation, disassembly and operation may also cause damage to bearing parts, such as damage, should be ***oided.
1，疲劳点蚀
1, fatigue pitting.
实践证明，在南京NSK轴承适当的润滑和密封条件下，当安装和维护条件正常时，大多数轴承由于沿环滚动而接触物体表面层，并具有不同的接触应力。在一定次数的循环之后，这种应力将导致表面层中的微裂纹不深。微裂纹是润滑油在其上的点蚀。
Practice has proved that under the proper lubrication and sealing conditi*** of Nanjing NSK bearings, when the installation and maintenance conditi*** are normal, most bearings contact the surface layer of the object due to rolling along the ring, and h***e different contact stress. After a certain number of cycles, this stress will cause the micro cracks in the surface layer not deep. Micro cracks are the pitting corrosion of lubricating oil on them.
2，塑性变形
2, plastic deformation
当南京NSK轴承静载荷和冲击载荷过大时，滚道或环形路面不均匀，塑性变形不均匀。这主要发生在具有非常低或摆动速度的轴承中。
When the static load and impact load of Nanjing NSK bearing are too large, the raceway or ring road surface is not uniform, and the plastic deformation is not uniform. This occurs mainly in bearings with very low or swinging speed.
3，磨料磨损和粘着磨损。
3, abrasive wear and adhesive wear.
进口轴承在密封和粉尘操作条件下不可靠，易磨损。南京NSK轴承通常在辊和环之间有滑动摩擦，特别是在滚子和保持架之间。如果润滑不好并且热严重，滚动元件可能会引起摩擦甚至磨损。速度越高，磨损越严重。
Imported bearings are not reliable and easy to wear under seal and dust operation conditi***. Nanjing NSK bearings usually h***e sliding friction between rollers and rings, especially between rollers and cages. If the lubrication is not good and the heat is serious, the rolling element may cause friction or even wear. The higher the speed, the more serious the wear.
疲劳点蚀是轴承在中速下运行的主要失效形式。设计约束是保证轴承具有足够的疲劳寿命，应根据疲劳寿命进行校核和计算。
Fatigue pitting is the main failure mode of bearings running at medium speed. The design c***traint is to ensure that the bearing has sufficient fatigue life, which should be checked and calculated according to the fatigue life.
对于南京NSK轴承，由于高的加热，经常发生过度磨损和温高损伤。除了确保轴承足够的疲劳寿命外，设计约束还应制约速度不超过极限值，即除了寿命计算外，还应检查极限速度。
For NSK bearings in Nanjing, excessive wear and high temperature damage often occur due to high heating. In addition to ensuring sufficient fatigue life of bearings, design c***traints should also restrict the speed not to exceed the limit value, that is, in addition to life calculation, the limit speed should also be checked.
对于低速或低速轴承，主要失效模式是过度塑性变形。设计约束是防止过大的塑性变形，这需要静态强度校核。
For low speed or low speed bearings, the main failure mode is excessive plastic deformation. The design c***traint is to prevent excessive plastic deformation, which requires static strength checking.
此外，轴承组合结构设计合理，保证了充分的润滑和可靠的密封，对提高轴承寿命和保证正常运行具有重要意义。
In addition, the bearing combination structure design is reasonable to ensure adequate lubrication and reliable sealing, to improve bearing life and ensure normal operation is of great significance.
文章来自：南京SKF轴承 www.wh-
The article is from: Nanjing SKF bearing www.wh-
文章来自：南京INA轴承 a-
The article is from: Nanjing INA bearing a-
文章来自：南京NSK轴承
The article is from: Nanjing NSK bearing
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