21 Meters Long Excavator Boom and Arm for Hitachi ZX500/ZX600/ZX670/ZX800 with S355 and S690QL Material and 6 Months Warranty
Price:
Negotiable
MOQ:
1
Delivery Time:
Negotiable
Brand:
Manufacturer for Hitachi ZX500/ZX600/ZX670/ZX800 21meters long boom
Product Description
Hitachi ZX500/ZX600/ZX670/ZX800 21m Long Boom
Excavator Long Reach Boom and Arm
- Compatible with all makes and models of excavators
- Standard package includes: bucket, linkage, bucket cylinder, 4 oil pipes/hoses, 6 pins, and lubricating system
- Multiple material options available (Q345B, Q690D, Weldox) to suit specific applications
- Two-piece boom design for container-friendly shipping
- All seams feature 45-degree tapered edges for optimal welding
- 6-month warranty included
- Reinforced construction options available for heavy-duty applications
- Optional boom and arm cylinders available upon request
- Custom pipeline configurations for specialized applications
- Capable of producing booms up to 32m (largest completed for Hitachi EX3500)
Technical Specifications
| Model | LDB120 | LDB200 | LDB220 | LDB300 | LDB350 | LDB400 | LDB450 |
|---|---|---|---|---|---|---|---|
| Total length (mm) | 13000 | 15380 | 15380 | 18000 | 20000 | 22000 | 24000 |
| Weight (kg) | 3000 | 4000 | 4200 | 5200 | 6000 | 6500 | 7000 |
| Max dig depth (mm) | 9000 | 11340 | 11370 | 13000 | 15000 | 16500 | 18000 |
| Max extensive scope (mm) | 12500 | 15100 | 15100 | 17600 | 19600 | 21600 | 23600 |
| Max dig height (mm) | 11300 | 12510 | 12610 | 13720 | 14920 | 16100 | 17300 |
| Folding height (mm) | 2900 | 2980 | 3040 | 3210 | 3210 | 3400 | 3400 |
| Bucket volume (m³) | 0.3 | 0.4 | 0.4 | 0.4 | 0.5 | 0.6 | 0.6 |
| Excavator tonnage (ton) | 12 | 20 | 22 | 30 | 35 | 40 | 45 |
Manufacturing Process
1. Material Composition
Top and bottom sections use Q690D steel, while other components utilize Q340B steel.
2. Welding Process
Welded with mixed gas (80% argon, 20% carbon dioxide) for optimal strength and durability.
3. Bushing System
High-quality copper bushings with graphite for smooth operation and longevity.
4. Edge Preparation
Milling machines prepare strip edges and grooves to ensure perfect forming and welding conditions.
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Company
Dongguan Haide Machinery Co., Ltd
Location
Tangxia Village Industrial area,Gaobu Town,Dongguan City,Guangdong Pro 523281,China
Contact Person
Irene Guo