D7R Bulldozer Track Chain Link Undercarriage Parts for CAT Caterpillar
High-performance track link assembly built for Caterpillar D7R bulldozers. Forged steel links, heat-treated pins, and sealed bushing systems ensure long-term durability in extreme working environments.
| Material | 35MnB/40Mn2 |
|---|---|
| Surface Hardness | HRC53-58 |
| 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 chain is a core undercarriage component on your D7R bulldozer. It connects each track shoe into a continuous, load-bearing belt while transmitting engine power into forward motion.
In heavy earthmoving, mining, or forestry, the chain must withstand high impact forces, maintain precise pitch alignment, and resist wear from rocks, debris, and soil. A robust chain ensures machine stability, accurate steering, and smooth dozing over tough terrain.
Production Process: How Our D7R Chains Are Made
Each D7R track chain is built through strict, multi-stage manufacturing:
- Link Forging & Heat Treatment – Each link is hot-forged from alloy steel (typically 35MnB or 40Mn2), then heat-treated to achieve surface hardness around HRC 52–58.
- Pin & Bushing Precision Machining – High-grade 40Cr pins and bushings are induction hardened and ground for dimensional accuracy and long wear life.
- Sealed & Lubricated Design (Optional) – Greased bushing systems reduce internal friction, extending service intervals and lowering maintenance costs.
- Surface Coating – Chains are treated with anti-corrosion black paint or phosphate finish, ensuring protection during storage and usage.
- Rigorous QC Inspection – Each link assembly is checked for pitch, hardness, roundness, and structural integrity before delivery.
Compatibility and Fitment Information
This track link assembly fits:
- Caterpillar D7R Bulldozers
- D7R Series 2, D7H, and compatible models with the same track pitch and shoe interface
Common OEM Part Numbers:
- 1156301
Please verify with your undercarriage specifications or serial number before ordering.
Key Advantages of Our D7R Bulldozer Track Chain
- Engineered for High Load Applications – Built for rough terrain, long pushing distances, and frequent directional changes
- OEM-Compatible Pitch & Hole Alignment – Direct fit for Caterpillar D7R with no modification needed
- Optional Configurations – Available in dry-type or sealed & lubricated variants, with master pin and split link options
- Longer Wear Life – Treated surfaces and tight tolerances minimize internal friction and external abrasion
- Bulk Availability & Fast Dispatch – Large volumes in stock, ready to ship worldwide
- Branding Support – We offer OEM/ODM logo engraving and custom packaging services for distributors or fleet operators
Photo Overview of Our Workshop
We’ve included actual production images of our bulldozer chain sets:
Track Link Forging & Machining
The raw track links are forged into form, then machined to ensure uniform pitch and hole alignment. Precision is essential for proper sprocket and bushing engagement.
Pin and Bushing
Hardened pins are inserted between the links to create a flexible, load-bearing chain. The sealing system prevents grease leakage and contaminant ingress.
Painting & Surface Coating
After assembly, the entire chain is cleaned and painted with industrial-grade coatings to protect against rust, humidity, and chemical corrosion on job sites.
Final Inspection & Packaging
Before shipping, the chains undergo dimensional checks and torque verification. Chains are then packed securely on wooden pallets or steel frames to avoid deformation.
Technical Specifications
| Parameter | Value |
|---|---|
| Pitch | 203.2 mm (8.0 inch) |
| Bushing Type | Dry or Greased Sealed |
| Hardness (Links) | HRC 52–58 |
| Material (Links) | 35MnB / 40Mn2 Forged Steel |
| Material (Pins/Bushing) | 40Cr / 45# Hardened Steel |
| Chain Configuration | 38–41 Links (standard sets) |
OEM Undercarriage Parts for Caterpillar Bulldozer
| 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.
Application Scenarios
Our D7R track chains are tested and proven in:
- Mining and Quarrying Operations
- Large-Scale Earthmoving and Road Construction
- Forestry and Land Development
- Heavy Equipment Rental Fleets
- Municipal Ditching or Utility Excavation Projects
Whether you’re pushing through gravel, clay, rock, or compacted soil, this chain delivers power and reliability.
Get Expert Help Before Ordering
Not sure which chain matches your machine? Our technical team can help confirm fitment using:
- Machine model & serial number
- Track pitch or drawing
- Existing part numbers
We’ll make sure you get exactly the right track link set for your D7R.
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.
