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Dongguan Haide Machinery 
Add:Tangxia,Gaobu Town,Dongguan City,Guangdong Pro 523281,China
Home » Products » Long Reach Boom » Hitachi ZX870 21m long reach boom
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Hitachi ZX870 21m long reach boom

  • LDB800-ZX870-21
  • Excavator: Hitachi ZX870
  • Total length: 21000 mm
  • Boom length: 11500 mm
  • Stick length: 9500 mm
  • Max extensive: 20600 mm
  • Max dig depth: 15600 mm
  • Max dig height: 16100mm
  • Bucket: 1.8 cum rock bucket
  • Counter weight: 3000 kgs
  • Material: Q345B+Q690D
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
Model LDB120 LDB200-1 LDB200-2 LDB300 LDB350-1 LDB350-2 LDB450
Total length
13000 15380 1800 18000 20000 22000 24000
Self weight
3000 4000 4200 5200 6000 6500 7000
Max dig depth
9000 11340 12200 12200 14500 16100 18000
Max extensive
Scope (mm)
12500 15100 17600 17600 19600 21600 23600
Max dig height
11300 12510 13500 13720 14920 16100 17300
Folding height
2900 2980 3040 3210 3210 3400 3400
Bucket volume
0.3 0.6 0.4 0.4 0.5 0.6 0.6
Suitable excavator
12 20 20 30 35 35 45


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