Aftermarket Excavator Link Rod for Doosan DH300
Durable forged link rod designed for Doosan DH300 and compatible 30-ton excavators. Precision-machined for perfect alignment and treated with anti-corrosion coating. Ensures efficient bucket articulation under continuous heavy-load operations.
| Colors | Black or yellow or customized |
|---|---|
| Surface Hardness | HRC52-58 |
| Material | Q235B, Q345B |
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Kinton Parts is trusted by professionals worldwide for delivering high-quality parts for excavators, bulldozers, and other construction machinery—with guaranteed performance and durability.
Essential Function in DH300 Working Group
The link rod in the Doosan DH300 excavator is a critical part of the bucket linkage assembly, acting as the mechanical bridge between the bucket cylinder and the bucket arm. It converts powerful hydraulic pressure into precise, controlled bucket movement—essential for effective digging, scooping, and dumping cycles.
In a 30-ton class machine like the DH300, which frequently operates in earthmoving, quarrying, and deep trench excavation, the link rod is subjected to repeated high-load impacts, especially when working in compacted soils or rocky environments. A premium-quality link rod not only ensures stable force transmission without looseness or deflection, but also helps maintain the overall structural balance of the excavator's front working group. This minimizes stress on surrounding components such as bucket pins, bushings, and hydraulic actuators, effectively extending the life of the entire linkage system and preserving operating efficiency over time.
Forged Steel Body & Material Selection
Our DH300 link rod is manufactured using either Q345B or Q235B structural steel, based on your specific strength and application requirements. For operations in rocky soil, hardpan, or demolition zones, we recommend Q345B for its:
- High yield and tensile strength
- Superior resistance to cracking and deformation
- Long-term fatigue performance under cyclic loads
Each rod is forged, not cast, ensuring uniform grain structure and eliminating weak points that could lead to failure under extreme conditions.
CNC Machining & Anti-Rust Treatment
After forging, each link rod is CNC-machined at critical wear points—especially the pin holes and joint surfaces.
We also offer two standard surface protection options:
- Shot-blasted and primer-coated for dry inland conditions
- Electrophoretic coating (e-coating) for environments prone to moisture, mud, or chemical exposure
These coatings provide long-term protection against rust, abrasion, and material degradation, extending part life in aggressive worksites.
Pre-Machining Storage
After forging and rough shaping, each link rod is properly stored in preparation for precision machining and heat treatment. These solid, semi-finished parts are neatly arranged in batches — showcasing both our forging strength and our ability to manage stable, large-scale production.
Export-Ready Packaging
After completing all machining, quality checks, and anti-corrosion treatment, each finished link rod is carefully packed using reinforced pallets or wooden crates. This ensures safe handling and long-distance transport. Every package is clearly labeled for easy tracking, and logo or barcode customization is available upon request.
Fitment Range
This link rod is compatible with:
- Doosan DH300 / DH300-5 / DH300LC / DH300LC-7
- Certain DX300LC variants (check linkage configuration)
Confirm using the casting code on your old part
Need to confirm fit? Just send us your machine serial, casting number, or dimension drawing, and we’ll verify compatibility within 12 hours.
OEM Undercarriage Parts for Doosan Excavator
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| DOOSAN | DH30 | DH35 | DH50 | DH55 | DH60 | DH60-7 | DH80 | DH130 |
| DH130-2 | DH150LC-7 | DH150W-7 | DH170 | DH180 | DH200W | DH210W-7 | DH220LC | |
| DH225LC | DH220LC-7 | DH225LC-7 | DH280LC | DH300-5 | DH300-7 | DH300LC-7 | DH320 | |
| DH370LC-7 | DH400LC-7 | DH450 | DX55 | DX60 | DX80 | DX140LC | DX160LC | |
| DX200A | DX225LC | DX260LC | DX300LCA | DX340LC | DX420LC | DX500LC | DX800LC | |
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Real-World Applications: Built for Compact Efficiency
The Doosan DH300 is a high-performance excavator used in:
- Large-scale site excavation
- Crushed rock and gravel loading
- Open-pit mining and quarrying
- Bridge and foundation trenching
These environments exert high torsional force and shock load on the linkage system. Our link rod is designed to maintain joint integrity, reduce bore deformation, and allow fluid bucket movement even after thousands of high-pressure cycles.
Maintenance Advice for Long-Term Use
- Grease pin joints regularly—especially in dusty or wet conditions
- Inspect pin holes for signs of elongation or scoring
- Replace link rod together with pins and bushings for optimal fit
- Avoid applying side force or bucket twisting during operation
Following these steps can significantly extend the lifespan of your linkage assembly and maintain smooth operation in the field.
SHIPPING & DELIVERY
At Kinton Parts, we ensure reliable, worldwide shipping of parts for excavators, bulldozers, and a full range of construction machines—safe, fast, and secure.
All products are securely packed using high-quality export cartons, reinforced wooden cases, or industry-standard palletized packaging to ensure maximum protection during transit and smooth handling during unloading.
Standard orders are typically shipped within 3–5 working days, while large or customized orders are usually dispatched within 7–20 days, depending on volume and production requirements.
We offer flexible global shipping options, including:
- International sea freight for cost-effective bulk transport
- Air freight for urgent orders
- Courier delivery (DHL, FedEx, UPS) for small-volume or sample shipments
Our logistics team manages every shipment carefully, providing real-time updates and tracking information until your order arrives safely at your destination.
Need assistance choosing the best shipping method for your location and timeline? Contact our team — we’ll help you plan a smooth delivery experience.
FAQ
Q: What are your main products?
A: We supply a full range of undercarriage and wear parts for excavators, bulldozers, and other heavy equipment. Our product line includes: Track rollers, carrier rollers, front idlers, sprockets, segments, track shoes, track chains, bolt and nuts, pins and bushings, bucket teeth and adaptors, filters, seal kits, swing bearing, and hydraulic cylinder—plus other essential replacement parts.
Q: Which countries do you export to?
A: Kinton Parts exports to over 60 countries worldwide, including:
USA, Canada, UK, Germany, Russia, UAE, Indonesia, Malaysia, Thailand, India, Pakistan, Bangladesh, Sri Lanka, South Africa, Colombia, Peru, and many others.
Q: Can I order a sample?
A: Yes, we accept trial orders. For parts in stock, samples can be shipped quickly. If you have technical drawings or existing samples, we also support customized production and mold development.
Q: How can I track my order after shipping?
A: Once your order is shipped, we will provide you with all necessary tracking information based on the shipping method. For express deliveries, you’ll receive a tracking number to follow the shipment online. For air or sea freight, we’ll send you the relevant documents such as the airway bill (AWB) or bill of lading (B/L), along with the packing list and commercial invoice to help with tracking and customs clearance.
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Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
