1.轴瓦损伤的原因(1)机体变形。由于柴油机机体、主轴承孔不同轴度超差,则会导致曲轴主轴颈与轴瓦之间的间隙在整个宽度上不均匀,影响油膜的正常建立。(2)柴油机连杆的不平行度、扭曲度超限。这会引起连杆轴承局部受力偏大,产生局部冲击,破坏压力油膜,也会造成轴承间隙超限,引起碾瓦。(3)轴瓦本身厚度差超限。在配瓦过程 1 bearing the cause of injury (1) the body deformation. As the diesel engine body, bearing bore hole different degrees of tolerance, it will lead to the gap between the crankshaft main journal and bearing uneven in the entire width, affecting the normal establishment of oil film. (2) The non-parallelism of diesel engine connecting rod, the distortion is beyond the limit. This will cause the connecting rod bearing partial force is too large, resulting in local impact, damage the pressure oil film, can also cause bearing clearance overrun, causing crushing. (3) bearing thickness difference over its limit. In the tile process