1,High strength: The working environment of the excavator is harsh, and the diesel piston needs to withstand high pressure and impact force. These two pistons may use high-strength materials or special structural design to ensure stable operation under harsh working conditions and will not easily deform or damage problems.
2,Good wear resistance: The piston constantly reciprocates in the diesel engine, and there is friction between the cylinder wall. In order to ensure the service life of the piston, the two pistons may have good wear resistance, and can withstand long periods of friction without excessive wear, reducing problems such as engine performance degradation caused by piston wear.
3,Precise dimensional accuracy: The fit clearance between the piston and the cylinder wall is crucial for the performance and reliability of the diesel engine. 
4,Optimized piston top design: The shape and structure of the piston top have an important impact on the combustion efficiency and power output of a diesel engine. 

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