Excavator Telescopic Arm

Excavator Telescopic Arm

Excavator Telescopic Arm, also go by Telescopic Dipper Arm, is a working device installed on the excavator, usually work with clamshell grab or other grab buckets. It consists of the fixed body and the mobile body that can extend and retract the mobile body through the action of the telescopic cylinders, to achieve a larger excavation radius and a reasonable loading height.

SKU: HITE TRB-1 Category:


HITE Excavator Telescopic Arm is customized manufactured according to your working needs to suit 20-50T, 40,000 pounds to 100,000 pounds excavators. Working range from 20M to 40M of depth. Working application including foundation work, narrow excavator shafts, matro station construction, underground packing and canal clearance, deep excavation projects. Etc.

Our Telescopic dipper arms can maximize the working efficiency and allowing loading up a truck within 10 minutes.

Revolutionize your excavation projects with our cutting-edge Excavator Telescopic Arm. Engineered to deliver unprecedented versatility and precision, this remarkable attachment is a game-changer in the world of heavy machinery. Whether you’re a construction professional, contractor, or avid DIY enthusiast, this telescopic arm will elevate your productivity to new heights.

With its ingenious telescopic design, this arm brings a whole new level of adaptability to your excavator. Extendable to various lengths, it allows you to effortlessly reach and operate in areas that were once inaccessible. Tackle projects in narrow spaces, maneuver around obstacles, or reach deep into trenches with ease, all while maintaining stability and control.

Built to withstand the harshest working conditions, our Excavator Telescopic Arm is constructed using high-quality materials. Crafted to last, it endures heavy use and extreme environments, ensuring exceptional longevity. You can rely on this robust attachment to accompany you through countless projects, providing unwavering performance and dependability every step of the way.


excavator telescopic boom

Excavator Telescopic Arm Construction Scope Map

Excavator Telescopic Arm Construction Scope Map

3D Modeling Diagram for Excavator Telescopic Arm

3D modeling diagram of excavator telescopic boom

General Arrangement Drawing

Excavator Telescopic Arm General Arrangement Drawing

Machine Tonnage 12T 20T 22T 30T 35T 40T 45T
Minimum length of forearm retraction (mm) 3500 4300 4600 5400 6000 6500 7000
Maximum length of outstretched arm (mm) 5500 6800 7200 9000 9600 10000 10500
Working weight of the Boom (kg) 1000 1500 1700 2300 2600 3000 3200
Bucket Capacity (cbm) 0.4 0.5 0.5 0.5 0.6 0.6 0.6
Maximun digging depth (mm) 8500 10000 10500 12000 12500 13000 14000

High-quality materials

Material Code Related Chemical Composition Hardness(HB) Extension(%) Drag and extension intensity (N/mm2) Bend Intensity (N/mm2)
C Si Mn P S
Alloy Q355B 0.18 0.55 1.4 0.03 0.03 163-187 21 470-660 355
Chinese High-Strength alloy NM360 0.2 0.3 1.3 0.02 0.006 360 16 1200 1020
High-Strength alloy HARDOX-500 0.2 0.7 1.7 0.025 0.01 470-500 8 1550 1300

Our Excavator Telescopic Arm fit most makes and models, Include but not limit below models.

  • 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
  • KATO: HD250, HD400, HD450, HD550, HD700, HD800, HD820, HD900,HD1250,HD1430
  • CASE: CX130B, CX210B, CX240B, CX360B, CX470B,CX800B
  • LIEBHERR: R900C,R906, R916, R924, R926, R954, R964C, R974C, R984C
  • JCB: JS130LC, JS220LC, JS240LC, JS290LC, JS360
  • SANY: SY200C, SY210C, SY225, SY310C, SY420
  • SUNWARD: SWE130, SWE150, SWE200, SWE210, SWE230, SWE470


1. Large well depth excavation distance
2. Reduce excavator work movements and improve work efficiency
3. Flexibly increase or decrease the range of excavation depth


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