Wear Parts for Excavator
Long Reach Boom and Arm

Q355B Steel Long Reach Boom And Arm For Caterpillar Excavators

OEM Q355B Steel Long Reach Boom And Arm For Caterpillar Excavators utilizes Q355B wearable steel with a surface hardness of HRC52-58. This Two Section Long Reach Boom achieves an 8mm to 12mm hardening depth through specialized forging or casting processes, ensuring strict ISO9001-9002 compliance for heavy earthwork. We fully support OEM custom manufacturing according to your specific drawings, offering flexible minimum order quantities and rapid 15 to 25 days delivery times.
  • 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

Manufactured from first-class Q355B wearable steel, this extended reach structure undergoes advanced forging processes to resist extreme mechanical stresses in earth-moving operations. The heavy machinery boom assembly is treated to achieve a surface hardness of HRC52-58 with an 8mm to 12mm hardening depth, directly mitigating abrasive wear during river dredging or deep ditch excavation. Integrated with precisely machined bucket cylinders, high-pressure hydraulic hoses, and specialized H-linkages, the entire digging geometry is engineered for optimal payload retention. Furthermore, structural integrity is strictly verified through mandatory welding quality inspection and dimensional testing, preventing micro-fractures under heavy lateral loads.

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Application


The two-section long reach boom and arm is engineered for heavy earth-moving jobs where extended working range and structural stability are critical. Available in both two-section and three-section configurations, this assembly performs exceptionally well in deep excavation and waterway maintenance where standard excavator attachments cannot operate effectively.


Typical Applications:

  • Construction transportation of sand and concrete materials
  • Slope repairing and grading for expressways
  • Dredging and desilting operations in river courses
  • Earthwork excavation for large building foundations
  • Deep ditch trenching and complex earth-moving tasks

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What's Included in the Set?

Our excavator long reach boom and arm(stick)include:

  • 1 pcs x Boom
  • 1 pcs x Arm/stick
  • 1pcs x Bucket cylinder
  • 1pcs x Bucket, Grab or customized attachmen
  • 1set x Bucket Linkages(H Link,I Link)
  • 4pcs x Hoses, steel tubes etc
  • 6pcs x Pins


Product Parameters


Xiamen Fortune Industrial Co., Limited
Product Name Q355B Steel Long Reach Boom And Arm For Caterpillar 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?

First-class Q355B wearable steel for superior structural strength and durability
HRC52-58 surface hardness for exceptional wear and tear protection in harsh environments
Full OEM customization for precise manufacturing based on your specific drawings and samples
6-month to 1-year quality guarantee for reliable and worry-free long-term operation
Professional engineering and sales team for superior designs and fast technical support
Complete all-in-one assembly package for quick and hassle-free equipment installation
Strict ISO9001 certified inspections for guaranteed welding quality and dimensional accuracy
Fast 15-25 days production cycle for keeping your construction projects strictly on schedule
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: Do you support custom manufacturing?
A: Yes. We offer OEM production exactly per your drawings or samples. Custom painting colors and specific attachments (buckets/grabs) are also available.

Q2: What materials are used and how durable are they?
A: We use high-performance Q355B wearable steel. The surface achieves HRC52-58 hardness with an 8mm-12mm hardening depth, ensuring excellent wear resistance.  

Q3: What is the delivery time and packaging method?
A: Production and delivery take 15-25 days after the sales contract is established. All products use fumigated, seaworthy export packaging for secure shipping. 

Q4: What is included in the package and what is the warranty?
A: A complete set includes the boom, arm, bucket cylinder, bucket/attachment, linkages, hoses, and pins. We offer a 6-month to 1-year warranty backed by strict ISO9001 quality inspections.   

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