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Caterpillar D6H bulldozer front idler
CAT D6H bulldozer front idler
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D6D Idler Wheel Undercarriage Parts Bulldozer
Caterpillar D6H bulldozer front idler
CAT D6H bulldozer front idler

Factory Price Caterpillar Bulldozer D6D D6H Dozer Front Idler Wheel 6T3216

The Caterpillar D6D D6H bulldozer idler (6T3216, 202-4304) is a critical undercarriage component designed to guide and tension the track chain, ensuring smooth operation and stability in demanding environments. Manufactured from premium alloy steel and precision heat-treated, this idler delivers superior wear resistance, impact toughness, and long service life, making it a reliable replacement for OEM parts.

Material50Mn/40MnB
Surface HardnessHRC53-58,deepth: 8-12mm
ColorsBlack 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.

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Description

This bulldozer idler wheel for Caterpillar D6D and D6H is a key front undercarriage component designed to guide the track chain and maintain proper track alignment during operation. As a durable front idler for bulldozer undercarriage system, it not only supports the track but also helps maintain correct track tension, absorb impact from rough terrain, and ensure smooth forward and reverse movement.

Engineered as a reliable replacement idler for Caterpillar D6 series bulldozers, this component plays a crucial role in reducing vibration, preventing abnormal wear on track links, rollers, and sprockets, and improving overall machine stability. Its robust structure and precision design make it essential for extending undercarriage service life and reducing maintenance frequency.

Materials and Heat Treatment

The Caterpillar D6D D6H idler is forged from high-grade alloy steels such as 40Mn2 or 50Mn, offering a combination of hardness and strength. After forging, the idler undergoes a multi-stage heat treatment process:

  • Surface Hardening: Achieves HRC 52–58 hardness, providing resistance against abrasive ground conditions like gravel or rocky soil.
  • Core Toughness: Retains toughness inside the material, preventing cracks or fractures under heavy shock loads.
  • Sealing Structure: Ensures lubrication remains inside and contaminants like dirt and water are kept out, extending bearing life.

This combination guarantees that the idler maintains durability and stability even in long working hours or extreme terrains.

Manufacturing Process

The production of the Caterpillar D6D idler follows a strict process to ensure quality consistency:

Dozer Front Idler Shaft
Idler Bearing Machining & Assembly

The central bearing of the idler is manufactured using high-strength 50Mn steel, providing excellent load-bearing capacity and resistance to impact. Precision machining and strict assembly control ensure smooth rotation and long-term durability for Caterpillar D6D and D6H bulldozers.

Bulldozer Idler Surface Finishing
Idler Surface Heat Treatment Process

The idler shell undergoes advanced heat treatment to improve surface hardness and structural strength. This process enhances wear resistance and protects the component from deformation under heavy load and harsh working conditions.

Bulldozer track idler wheel painting
Anti-Corrosion Coating & Painting

After machining and heat treatment, the idler is treated with anti-corrosion coating and finished with industrial-grade painting. This protective layer helps prevent rust and extends the service life during operation, storage, and transportation.

bulldozer undercarriage parts Idler
Final Inspection & Warehouse Preparation

Each idler is thoroughly inspected before being stored and prepared for shipment. With organized warehouse management and secure packaging, the products are delivered in optimal condition, ready for installation in D6 series bulldozers.

Application Scenarios

The Caterpillar D6D D6H bulldozer is widely used in heavy-duty applications such as road building, land clearing, mining support work, and farm field preparation. In all these environments, the idler plays a crucial role in ensuring consistent traction and machine stability. Whether operating on loose soil, compacted ground, or rocky surfaces, a durable idler significantly reduces downtime and operating costs.

Key Advantages

Compared with ordinary aftermarket alternatives, our Caterpillar D6D D6H bulldozer front idler offers:

  • Long wear life with high-strength alloy steel and advanced heat treatment.
  • Smooth track chain guidance, reducing undercarriage vibration.
  • Reliable sealing, minimizing maintenance frequency.
  • Excellent cost-performance ratio compared to OEM parts.

OEM Compatibility and Replacement

The idler is designed to match original Caterpillar specifications, ensuring seamless installation without modification and full interchangeability with OEM components. It provides a reliable and cost-effective solution for undercarriage maintenance and replacement.

For Caterpillar D6 series bulldozers, we offer the following OEM-compatible options:

  • D6H Idler – 6T3216
  • D6R Idler – 202-4304

Each idler is manufactured with high-strength materials and precision machining to ensure proper track alignment, smooth operation, and extended service life.

For customers operating in specialized environments—such as swampy ground, quarry sites, or abrasive terrain—we also provide customized solutions tailored to specific working conditions. OEM casting references and detailed specifications are available upon request, ensuring accurate matching and optimal performance.

BRAND MACHINERY MODEL NUMBER
CATERPILLAR D2 D3 D4 D5 D5K2 D5N D6R D6K2
D6N D6T D7R D7E D7G D8R D8T D9T
D9R D9 D10N D10T D11T D8T D9T D10T
D10T2 D11 D11R D11T D11T2 D10T D11T D11R
D11T D11R D11T D8T D8R D9T D9R D10T
D10T2 D11R D11T D11R D11T D10T2 D11T D11R
D6K2 D6K2 LGP D6N D6N LGP D6T D6T LGP D4K2 D4K2 LGP
D5K2 D5K2 LGP D6K2 D6K2 LGP D6N D6N LGP D6K2 D6K2 LGP
D8T D8T LGP D8R D8R LGP D9T D9T LGP D10T2 D11T

Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.

Maintenance and Service Life

To extend the lifespan of the idler, operators should perform regular inspections for cracks, surface wear, or leakage around the sealing system. Proper track chain tension must be maintained to avoid overloading the idler. When replacing, it is recommended to change idlers in pairs or sets to ensure balance and even wear across the undercarriage system. With correct maintenance, the Caterpillar D6D idler can achieve long service hours, reducing total ownership cost for equipment owners.

Packaging and Delivery

Each idler is coated with anti-rust oil and packed in durable wooden crates or palletized boxes for safe transport. Packaging is optimized for long-distance shipping, ensuring the idler arrives ready for installation. All packages are clearly labeled for easy identification.

Shipping & Delivery
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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.

excavator parts loading truck 4
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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.

BULLDOZER UNDERCARRIAGE PARTS FOR INQUIRY NOW

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