Excavator Long Arm 18 Meters Practical Excavator Dipper Arm Extension for Komatsu HITACHI HYUNDAI SANY , long reach digger

1. For all the long reach boom we produced, including lubricant pipe system, hydraulic system, 1 bucket, 1 bucket cylinder, 1 linkage, all pins, all hoses,etc

2. The Stick cylinder of the long boom, can use the original stick cylinder to save the cost, if you need the stick cylinder, we also can prepare it for you.
This Komatsu PC300 excavator long reach boom, the stick cylinder uses the original stick cylinder

3. The main material of this long boom is Q345B + Q690D, the top and bottom cover plate use Q690D, other plate use Q345B. Weldox is also optional to suit your application. Pin’s material is 42CrMo4.

4. Before welding,we have use big bevelling machine bevel the edge of the sheet.So the welding can go to the internal of the steel-sheet and make the structure have higher performance.
5. If necessary, extra pipeline can be added as customer requirements
For this Komatsu PC300 18 meter long reach boom, we do not prepare extra auxiliary pipe as customer requirements

6. Our welding was by manual. Welding is protective-gas welding, the protective gas is 80% Argon and 20% CO2 mixed. This is the golden standard for protective gas.

7. For all bases, joints and other main structures of the long boom, we use boring machine to adjust the precision after welding, to avoid the welding-stress leading to big tolerance.

8. We will also supply parts list for the long reach boom, so it’s easy for Maintenance and after-sales service.

9. We can supply detailed dimension drawing for confirmation before ordering.

Our Long Reach Booms Sticks fit most market models, Include but not limit:
Komatsu Excavator Model: PC160LC-8, PC200, PC210, PC228, PC220 PC270, PC300, PC350, PC450, PC600, PC850, PC1250
Caterpillar Excavator Model: CAT320, CAT323, CAT326, CAT329, CAT330, CAT335, CAT336, CAT349, CAT352, CAT374, CAT390
Hitachi Excavator Model: ZX210, EX200, EX220, EX330, EX350, ZX200, ZX240, ZX330, EX350, EX400, ZX470, ZX670, ZX870, EX1200, EX1900
Volvo Excavator Model: EC220, EC235, EC250, EC300, EC350, EC355, EC380, EC480, EC750
Doosan Excavator Model: DX225, DX235, DX255, DX300, DX350, DX420, DX490, DX530, DX800
Kobelco Excavator Model: SK200, SK210, SK220, SK250, SK260, SK300, SK330, SK350, SK380, SK460, SK500, SK850
Sumitomo Excavator Model:?SH210, SH225, SH240, SH300, SH330, SH350, SH460, SH480, SH500, SH700, SH800
Hyundai Excavator Model: R200, R210, R220, R290, HX220, HX235, HX260, HX300, HX330, HX380, HX430, HX480, HX520, R1200

Our factory specializes in customizing excavator boom arm and attachments, such as, excavator long reach boom arm, demolition arm, 2 or 3 sections telescopic arm, tunnel arm, rock bucket, gripper, ripper, etc., which is sell well in more than 40 countries and areas.
Company advantages:
1. 14000 square meters Workshop with Precision Equipments.
2. High-tech R&D Team,support ODM,OED
3. Experienced welding Workers
4. Online service within 24 hours
5. Prompt Lead Time
6. Factory sell directly,offer best price

Our production process:
1. The extended arm plate is precision-cut using a plasma cutting needle to ensure accuracy.
2. Before welding, the plate edges are milled (tapered) using a large edge milling machine. This allows for deep penetration of the weld into the steel plate, enhancing the overall performance of the structure.
3. Flaw detection tests are conducted using specialized instruments after welding.
4. After welding, a double-sided large-scale floor-standing boring machine is employed for precision boring. This ensures the long-reach arm concentricity during operation and extends its service life.
5. Following grinding, a sandblasting process is carried out to achieve a specific level of roughness and cleanliness on the long arms. This enhances their strength, hardness, and corrosion resistance.

Precision:
1. Tolerance within 5-10um
Hole drilling tolerance is within 5-10um, ensure accuracy.
2. Reach deeper and higher
The max work range and the max digging height are larger as the angle of the boom and arm can reach 163 degrees.
3. High work efficiency and saving fuel
Lighter while taking into account the quality, not only ensures work efficiency but also saves fuel.








Usually use 40GP container to load product !

Contact sophia to inquiry details !