Hitachi ZX870 21m long reach boom

Long reach boom excavator is very popular and high efficient in dredging work,dredging river,dredging sea,dredging port,etc

    -For dredging river,the excavator usually can stay on the dam or bank of the river to complete the work.

    -For dredging sea and port,usually need to keep excavator stay on a barge to complete the dredging.

 

1. We specialized in customizing all kinds of long boom for all kinds of excavators.

And have detailed dimension of most excavator model.Just give us the exact excavator mode is ok,such as Komatsu PC200-7,Hitachi ZX200-1,CAT320D,etc

 

2. Main sheet Material of this Hitachi ZX870 long reach boom / arm is Q345B + Q690D,the top and bottom cover plate of boom and stick is Q690D,other sheet is Q345B,Pin’s material is 42CrMo4.

 

3. Welding is protective-gas welding,the protective gas is 80% Argon and 20% CO2 mixed.This is golden standard for protective gas

 

4. For all base,joint and other main structure of the long boom,we use boring machine adjust the precision after welding,to avoid the welding-stress leading to big tolerance.

 

5. We will prepare lubricant pipe system,hydraulic system,bucket,bucket cylinder,linkage,pins and hoses for the long boom we supply you.

 

6. The stick cylinder of long reach boom,can use original stick cylinder to save the cost,if you need the stick cylinder,we also can prepare for you.

 

7.If necessary,we can prepare 1 kit or 2 kit (each kit have 2 pipe lines) extra auxiliary pipe line for the attachments of the long reach boom.

8. According to the long boom length and bucket capacity,our engineer can calculate if the excavator need extra counter weight,if need,we will prepare for you.

Parameter sheet of our series products