軸和軸承是機器中傳送動力的重要零件。由於在工作時,軸在軸承中不停地轉動,所以它們都需要有较高的技術要求,才能保證運轉平穩,提高機器的傳動效率,並減少磨損以增加使用壽命。 軸除了要求具有適當的硬度,光滑的軸頸表面,準確的軸頸圓度外,還要有一定的軸頸同心度。一般傳動軸的同心度偏差是0.015～0.030公厘;机床主軸同心度偏差的要求還要高。軸承一般要求修刮後具有均匀 Shafts and bearings are important parts of the machine that transmit power. As the shaft rotates in the bearing during operation, both of them require high technical requirements to ensure smooth operation, improve the transmission efficiency of the machine and reduce the wear to increase the service life. In addition to the shaft required to have the appropriate hardness, smooth journal surface, accurate spindle roundness, but also have some concentricity of the journal. The concentricity deviation of the general drive shaft is 0.015 ~ 0.030 mm; the requirement for deviation of the concentricity of the spindle of the machine tool is even higher. Generally require the bearing repair uniform after scraping