推压齿轮到是挖掘机的关键零件，亦是易损件，在生产中耗量很大。由于挖掘机生产率不断提高，因此推压齿轮的寿命与生产率提高之间的予盾日益显著。推压齿轮副在挖掘机中的空间位置有限，尺寸不能再放大。选择更好的材料和采用特殊的工艺来提高该齿轮到的寿命，成本又会大幅度 Push gear to the excavator is the key parts, but also wearing parts, consumption in production is very large. As excavator productivity continues to increase, the stamina between push gear life and productivity increases. Push the gear pair in the excavator space is limited, the size can not be enlarged. Choose a better material and use a special process to improve the life of the gear, the cost will be substantial