Link Rod for Kobelco SK350 Excavators
Forged steel link rod engineered for Kobelco SK350 and compatible excavators. CNC-machined for tight pin tolerance and alignment, and coated to resist corrosion in mining, demolition, and high-load excavation. Delivers long-term structural integrity under extreme operational stress.
| 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.
Purpose of the Link Rod in Kobelco SK350
The SK350 is a heavy-duty 35-ton class excavator engineered for mining, rock excavation, and intensive demolition work. In these demanding operations, the bucket linkage system is subjected to immense mechanical loads during every breakout, lifting, or trenching cycle—especially when working with compacted soils, boulder-laden terrain, or reinforced concrete debris.
At the heart of this system, the link rod serves as a vital connection between the bucket cylinder and the bucket linkage, transmitting powerful hydraulic forces while maintaining structural alignment and control. In such high-load environments, even slight inaccuracies—such as misaligned pin bores or improper machining tolerances—can lead to accelerated bushing wear, energy loss within the hydraulic circuit, and even fatigue cracking in adjacent components. That’s why precise fitment and forged strength are non-negotiable for the SK350’s linkage components.
Forged Steel Body for Enhanced Durability
This link rod is manufactured from high-quality Q345B or Q235B structural steel, depending on the working conditions and customer preference. Q345B is our standard choice for SK350-class equipment due to its:
- Higher yield strength
- Superior impact resistance
- Better fatigue performance under cyclic load
The forging process eliminates casting porosity and aligns the steel grain structure, giving the rod the strength density needed to survive in extreme force environments.
CNC Precision Machining & Surface Protection
After forging, each link rod undergoes multi-axis CNC machining for:
- Pin hole circularity and bore-to-bore spacing
- Contact face flatness and symmetry
This ensures a tight fit with OEM pins and cylinders, preventing joint play, asymmetrical movement, and wear ripple effects in the linkage system.
We offer two types of surface treatment:
- Primer paint for standard construction environments
- E-coating (electrophoretic) for superior corrosion protection in wet, coastal, or chemical conditions
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 a range of Kobelco SK350 excavators and similarly structured variants:
- SK350 / SK350-8 / SK350LC / SK350LC-8 / SK330-8 / SK330LC
- SK360 / SK360-8 / SK350HD / SK330HD (verify by casting code or linkage spec)
Unsure of compatibility? Just send us your casting code, machine serial number, or dimension sketch, and we’ll confirm within 12 hours.
OEM Undercarriage Parts for Kobelco Excavator
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| KOBELCO | SK30 | SK35 | SK40 | SK45 | SK55 | SK60 | SK60-8 | SK60-10 |
| SK75 | SK100 | SK120 | SK120-5 | SK120-6 | SK130 | SK135 | SK135SR | |
| SK135SR-2 | SK140 | SK140SR | SK200 | SK200-3 | SK200-5 | SK200-6 | SK200-8 | |
| SK200-10 | SK210 | SK210-8 | SK210LC | SK220 | SK230 | SK230LC | SK250 | |
| SK250-8 | SK260 | SK260LC | SK270 | SK300 | SK300-6 | SK300-8 | SK320 | |
| SK330 | SK330-6 | SK350 | SK350-8 | SK350LC | SK380 | SK400 | SK450 | |
| SK480 | SK480-8 | SK485 | SK500 | SK500LC | SK850 | SK850LC | ||
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Application Scenarios: Built for Extreme Work
SK350-class excavators are often deployed in:
- Limestone and granite quarries
- Demolition sites involving reinforced concrete
- Large-scale road and dam foundation works
In these jobs, the link rod must endure impact cycles, non-linear force directions, and material buildup around joints. Our rods are designed to resist:
- Pin hole elongation
- Fatigue cracking
- Hydraulic misalignment issues
Whether you’re dealing with hard rock or heavy debris, this link rod ensures stable linkage articulation and minimal maintenance.
Maintenance Advice for Long-Term Use
To ensure the link rod performs well across thousands of cycles:
- Lubricate all linkage pins every 250–300 hours
- Inspect for oval wear and pin tightness periodically
- Replace pins and bushings together with the rod for best results
- Clean debris buildup around the linkage regularly to prevent side stress
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.
