Bulldozer Undercarriage Spare Parts Chain Track Link fit Caterpillar D9N
The Caterpillar D9N track link (also known as a chain link or track shoe link segment) is the foundation of the bulldozer’s undercarriage system. Each segment connects with pins and bushings to form a continuous chain, providing the necessary traction and load distribution for heavy-duty earthmoving work. Engineered from high-strength alloy steel and processed through precision forging and deep heat treatment, our D9N track link ensures exceptional durability, wear resistance, and performance in the most demanding working environments.
| Material | 35MnB |
|---|---|
| Surface Hardness | HRC52-58 |
| Colors | Black or yellow or customized |
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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.
The track link plays a central role in the bulldozer’s mobility and traction. It connects each shoe plate and transfers torque from the drive sprocket to the ground. For a heavy machine like the Caterpillar D9N, which often operates in mining, quarrying, or large-scale construction, every track link must sustain immense pressure, shock, and abrasive wear.
A high-quality track link ensures:
- Stable traction on uneven or rocky terrain.
- Reduced wear on sprockets and rollers due to accurate pitch alignment.
- Smooth operation and lower vibration under heavy load.
Our D9N track link is precisely designed with optimal geometry, ensuring accurate engagement between the sprocket teeth and the chain, maintaining stable movement and reducing downtime.
Material and Heat Treatment Process
To withstand the harshest operating conditions, each track link for the Caterpillar D9N is made from premium alloy steel such as 35MnB, known for its excellent wear resistance, impact toughness, and hardenability.
The production process combines forging integrity with controlled heat treatment to achieve ideal hardness and flexibility balance:
- Forged Steel Blank: Refines internal grain structure, eliminating porosity and weak points.
- Quenching & Tempering: Produces a tough core that resists cracking under stress.
- Surface Hardening (HRC 52–58): The outer layer gains exceptional resistance to abrasion.
- Deep Hardened Bush Area: Prevents premature wear in high-friction contact zones.
This ensures that the link maintains high tensile strength and stable structure even under prolonged heavy loads.
Manufacturing Process Overview
Each D9N track link is manufactured under strict ISO-certified production control. The process typically includes:
1. Track Link Forging & Machining
As can be seen from the finished batch of chain links, each chain link is processed through a standardized production line, and the dimensional accuracy error is controlled within 0.05mm, ensuring smooth chain transmission after assembly and avoiding track jamming due to pitch deviation.
2.Chain Pins
As a key connecting component of the chain, the chain pin is made of the same 35MnB material as the chain link and processed through the same heat treatment process. Its hardness and strength fully match the chain body, avoiding breakage risks caused by uneven component strength and ensuring the stability of the entire chain transmission system.
3. Fine Painting Process
Finished chains undergo a three-step rust-proofing process: degreasing and rust removal, phosphating, and fine painting. The images clearly show the smooth, even paint film on the chain surface. This process effectively shields the chain from rain and sediment, significantly reducing the rate of chain corrosion and extending maintenance intervals, even in humid and dusty mining and construction environments.
4. Standard Packaging
The finished chains are packaged in waterproof film-coated woven bags + wooden pallets. As shown in the shipment image, the packaging is neat and standardized, which can effectively resist extrusion, collision and moisture invasion during transportation, ensuring the chains are delivered to customers in good condition without worrying about transportation damage.
Compatibility and OEM References
This track link is designed for Caterpillar D9N bulldozers and other equivalent CAT models sharing the same undercarriage geometry.
- Compatible Models:
Caterpillar D9N, D9R, and D9T series (depending on chain configuration). - Customization:
We support OEM production and logo customization for distributors and fleet maintenance contractors.
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| CATERPILLAR | D3 | D3C | D3K | D3K2 | D4 | D4C | D4H | D4K2 |
| D5 | D5B | D5C | D5H | D5K | D5K2 | D5LGP | D5N | |
| D5R | D6 | D6B | D6C | D6D | D6G | D6H | D6K | |
| D6K2 | D6M | D6N | D6R | D6T | D6XE | D7 | D7E | |
| D7G | D7H | D7R | D7R II | D7T | D8 | D8H | D8K | |
| D8L | D8N | D8R | D8T | D9 | D9G | D9H | D9N | |
| D9R | D9T | D10 | D10N | D10R | D10T | D10T2 | D11 | |
| D11N | D11R | D11T | D11T CD | D11T2 | D3XL | D5XL | D6XL | |
| D6LGP | D7LGP | D8LGP | D9LGP | D5C LGP | D4G XL | D6G2 | D5G | |
| D3G | D3C III | D4E | D5E | D6E | D6S | D8S | D10S | |
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Quality Assurance and Testing Procedures
Our production line follows stringent inspection standards at every step:
- Hardness Test: Ensures uniform hardness layer (HRC 52–58) and proper depth.
- Dimensional Test: Each link’s pitch and hole position are checked within ±0.05 mm tolerance.
- Crack Detection: Ultrasonic and magnetic particle inspection guarantees defect-free forging.
- Assembly Test: Simulated chain assembly ensures perfect pin-bushing alignment and rotation.
Only after passing all these tests do the links proceed to packaging and shipment.
Maintenance and Replacement Tips
- Monitor Pitch Elongation: Replace the link when elongation exceeds 0.6% to prevent sprocket wear.
- Check Pin and Bushing Fit: Loose fits accelerate wear; replace as a set when
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.
