The working process of the boom arm

Only use the boom cylinder
When only the boom cylinder is used for excavation, the motion trajectory of the bucket teeth is an arc centered on the lower hinge point of the boom, so the maximum excavation radius and longest excavation can be obtained, and it is easy to make the excavated soil layer thinner. Therefore, the appropriate excavation stroke is used for excavating harder soil layers.
Only use stick cylinder
When only using the boom cylinder for excavation, the motion trajectory of the bucket teeth is an arc centered on the hinge point between the boom and the boom. This excavation method can achieve the maximum excavation depth when the boom is at the maximum downward tilt angle, and also has a large excavation stroke. It can ensure that the bucket is fully loaded when working in harder soil conditions. This mining method is often used in practical work.