Wear Parts for Excavator
Long Reach Boom and Arm

18M Three-Section Long Reach Boom & Arm for 20-Ton Excavators

The 18M three-section long reach boom and arm is a bolt-on attachment for 20-ton class crawler excavators. With one extra articulation joint over a standard two-section boom, it reaches 18 meters for high-rise demolition, slope trimming, deep excavation and long-distance handling — built from Q355B high-strength steel with a deep hardened surface (HRC52-58) and OEM mounting dimensions for direct installation.
  • brand:

    Caterpillar
  • color:

    Black or Yellow
  • Model:

    D6H D6R D6T D7G D7R D7H D8N D8R
  • Warranty:

    One Year
  • Process:

    Forging & casting
  • Hardness Depth:

    8-12mm
  • Surface Hardness:

    HRC52-58
  • Material:

    Q355B
  • Moving Type:

    Crawler Bulldozer
  • products details

Product Description

Engineered for 20-ton class crawler excavators, this 18-meter three-section long reach boom and arm extends the machine's working envelope far beyond the standard configuration. Unlike conventional two-section designs, the three-section structure provides an extra articulation point, giving the excavator better lifting posture and finer control when working at height or over long distances. All pin holes are CNC-bored to OEM mounting tolerances for a direct bolt-on fit with no frame modification, while every weld passes full inspection before delivery.

18 Meter Long Reach Excavator Arm



Application


The three-section long reach boom and arm is designed for jobs where height, distance and precision all matter. With its extra articulation joint, it performs especially well in urban demolition and slope work where a standard two-section boom cannot reach.


Typical Applications:

  • High-rise building demolition in confined urban sites
  • Riverbank, reservoir and waterway desilting
  • Slope trimming and greening on highways and mountain roads
  • Deep excavation for basements, pits and foundation works
  • Long-distance material handling of sand, gravel and debris

High Reach Demolition Boom Arm


What's Included in the Set?

Each set of our three-section long reach boom and arm ships complete with all connecting parts, so the machine can start working right after installation:

  • 1 x Boom (Section 1)
  • 1 x Middle Arm (Section 2)
  • 1 x Stick (Section 3)
  • 1 x Bucket Cylinder
  • 1 x Bucket, Grab, or Customized Attachment
  • 1 Set x Bucket Linkages (H Link, I Link)
  • 1 Set x Hoses, Clamps and Steel Tubes
  • 1 Set x Pins and Bushings


Product Parameters


Xiamen Fortune Industrial Co., Limited
Product Name 18M Three-Section Long Reach Boom & Arm for 20-Ton Excavators
Production Standard OEM installment size
Material Q355B purchased from first class steel plant
Process Forging or Casting
Painting Color Black or yellow or as customers' request
Surface Hardness HRC52-58, Depth:8mm-12mm
Quality Guarantee 6 months--one year
Certification ISO9001-9002
Delivery Time Within 15--25 days after sales contract establishment
Package Fumigate seaworthy packing and Export Standard Package
Payment Term TT, L/C, Paypal, Western union,D/P
Application Crawler Excavator& Wheel Loader&Backhoe&Digger

Why Choose us?

Extra articulation point for better reach and control than two-section arms
Good lubricated oil recycle system and bronze bushings for longer pin life
High-performance wearable steel with deep hardened surface (HRC52-58, 8-12mm)
Full quality control: hardness, welding, dimension and visual inspection
OEM mounting dimension -- direct bolt-on, no machine modification
Produced as per client's samples, designs and drawings
Certificated by ISO9001
Fast production and delivery with complete hoses and pins included
Model List
Caterpillar Excavator E320,E320D,E320E, E323, E330,E330D, E336,E345DL, E349DL, E374, E395, E305.5, E308, E312, E315
Caterpillar Bulldozer D3, D5H,D5M,D5N, D6,D6H,D6R,D6T,D6M,D6N, D7, D7G,D7H,D7R,D8,D8N,D8R,D8T, D9, D9R,D9N,D9T,D10N,D10T, D11N,D11T
Caterpillar Motor Grader 120, 140, 160, 18, 24
Komatsu Excavator PC55, PC70, PC130, PC200, PC220, PC240, PC300, PC350, PC400, PC450, PC650, PC800, PC1250
Komatsu Bulldozer D20,D31, D37, D51, D61, D65EX-12,D65PX-15, D85EX-15EO, D85ESS-2A,D155AX-6, D275, D375, D475, D575
Komatsu Wheel Loader WA100, WA150, WA200, WA250, WA320, WA380, WA430, WA470, WA500, WA600, WA800, WA900
Komatsu Motor Grader GD405, GD555, GD655, GD675, GD755, GD825
Hitachi Excavator ZX55, ZX70, ZX120, ZX130, ZX200, ZX210, ZX240, ZX250, ZX330, ZX350, ZX470, ZX670, ZX870, ZX1200, EX200,EX300,EX400
JCB Backhoe Loader 1CX, 2CX, 3CX, 4CX, 5CX
JCB Excavator JS130, JS145, JS160, JS200, JS220, JS235, JS300, JS330, JS370, JS460
Kobelco Excavator SK55, SK75, SK130, SK140, SK170, SK200, SK210, SK210LC-8,SK220, SK250, SK260, SK300, SK330, SK350, SK480, SK500, SK850
Hyundai Excavator R55, R80, R110, R140, R160, R180, R210, R220, R250, R290, R300, R330, R360, R380, R430, R480, R520, R800
Shantui Bulldozer SD08, SD13, SD16, SD22, SD23, SD32, SD42, SD52, SD90
Shantui Excavator SE60, SE75, SE135, SE150, SE210, SE215, SE220, SE240, SE260, SE335, SE370, SE470, SE500
Doosan Excavator DX55, DX60, DX80, DX140, DX150, DX170, DX200, DX225, DX235, DX255, DX300, DX340, DX350, DX380, DX420, DX480, DX520, DX530, DX700, DX800
New Holland Excavator E18, E26, E33, E37, E55, E60, E75, E135, E145, E175, E215, E230, E260, E305, E335, E385, E485
Daewoo Excavator DH55, DH60, DH80, DH130, DH150, DH170, DH200, DH220, DH225, DH258, DH280, DH300, DH320, DH360, DH370, DH420, DH500


FAQ

Q1: What excavator size does this boom fit?
A: It is built for 20-ton class crawler excavators. Other tonnage and brands can be customized from your machine's dimensions.

Q2: How far can it reach?
A: The nominal working reach is 18 meters, and custom lengths are available on request.

Q3: Is installation difficult?
A: No. Pin holes and mounting dimensions follow OEM standards, so it bolts onto the original boom foot without machine modification.

Q4: What is the delivery time?
A: Usually 15-25 days after the sales contract is confirmed, with fumigated seaworthy packing for export.

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