1.High strength: During the working process of the excavator, the piston needs to withstand high pressure and impact force. This type of piston may use high-strength materials or special manufacturing processes to ensure that it can maintain the integrity of the structure under harsh working conditions, to avoid deformation, rupture and other problems due to excessive force.
2.Good wear resistance: The excavator starts to run for a long time, and there will be constant friction between the piston and the cylinder wall. Therefore, this piston may have good wear resistance, the surface is specially treated or wear-resistant materials are used, which can reduce the wear caused by friction, extend the service life of the piston, and ensure the normal operation of the engine.
3. Accurate dimensional accuracy: In order to ensure the performance and reliability of the engine, the dimensional accuracy of the piston is very high.
4. Efficient heat dissipation performance: The engine will produce a lot of heat when working, and the piston, as a part directly in contact with high temperature gas, needs to have good heat dissipation performance. 

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