Doosan DX420LC-7 Sprocket / Drive Sprocket K1004460 – Heavy-Duty Undercarriage & Drivetrain Component

Description

The Doosan Sprocket (or Drive Sprocket), part number K1004460, is an absolutely crucial component of your excavator’s undercarriage and drivetrain system. This robust, toothed wheel is securely mounted to the final drive of the excavator. Its primary and essential function is to engage directly with the track chain links, receiving rotational power from the machine’s hydraulic travel motor through the final drive, and thereby propelling the excavator forward or backward. This precise and powerful interaction with the track chain is paramount for efficient machine movement, optimal traction, and the overall longevity of your excavator’s entire track system.

This sprocket is confirmed to be directly compatible with Doosan DX420LC models. Given that the Doosan DX420LC-7 is the latest iteration in this series, it is highly probable and widely accepted that the K1004460 sprocket is the correct and suitable component for your DX420LC-7, ensuring a precise fit and reliable performance that meets or exceeds original equipment manufacturer specifications for this heavy-class excavator. This part number is also cross-referenced with 200108-00102 and 108-00019 in some contexts.

Typically constructed from high-strength alloy steel (such as 40Cr or 40MnB), this sprocket undergoes rigorous manufacturing processes including forging, casting, precision machining, and advanced heat treatment. The teeth are meticulously shaped and uniformly hardened (with a typical hardness of HRC52-58 and a hardened depth up to 7mm from the tooth tip) to maximize their resistance to abrasive wear and maintain optimal, consistent engagement with the track chain, even under the severe operating loads and impacts encountered during heavy excavation work. The robust construction ensures it can withstand the continuous stress of power transmission and the harsh impacts inherent in typical construction environments. A confirmed weight for this sprocket is 82 kg, indicating a very substantial and durable component designed for the immense forces handled by excavators in the 40-ton class.

A worn, broken, or improperly fitting sprocket can lead to a cascade of severe operational issues, including reduced traction, track slippage (often audible as a grinding noise), accelerated and uneven wear on track links and idlers, increased fuel consumption, and potential catastrophic damage to the final drive system. These problems severely compromise the machine’s stability, drastically reduce operational efficiency, and can result in very costly repairs and extensive, unexpected downtime. Replacing a failing sprocket with a high-quality, OEM-standard part like the K1004460 is absolutely crucial for maintaining the integrity and peak performance of your heavy-duty excavator’s undercarriage and drivetrain, ensuring smooth, powerful, and reliable operation, and safeguarding your significant investment in the machine.

Key Features:

• OEM-Quality Part: Engineered to meet or exceed original factory specifications, ensuring precise fitment and reliable performance for Doosan DX420LC-7 and compatible heavy-duty models.
• High-Strength Alloy Steel Construction: Manufactured from premium, heavy-duty alloy steel (e.g., 40Cr/40MnB) for maximum durability and robust resistance to wear and impact under extreme loads.
• Precision Heat-Treated & Hardened Teeth: Features meticulously machined and uniformly surface-hardened teeth (typical HRC52-58) for exceptional longevity, consistent engagement with the track chain, and extended service life.
• Optimal Power Transfer: Designed for highly efficient and reliable transmission of power from the final drive to the track, ensuring strong and consistent propulsion even in challenging conditions.
• Robust Weight: Confirmed at 82 kg, signifying a substantial and robust component built to handle the immense forces of large excavators.
• Direct Compatibility: Confirmed for Doosan DX420LC and highly suitable for the DX420LC-7.

Benefits:

• Ensures Smooth & Powerful Track Movement: Facilitates continuous, low-friction, and high-traction operation of the track chain, maximizing machine mobility and overall operational efficiency.
• Extends Undercarriage Lifespan: Precise tooth engagement minimizes abrasive wear on track links, idlers, and other critical undercarriage components, significantly reducing long-term repair costs.
• Enhances Traction & Control: Provides reliable grip and power delivery to the tracks, greatly improving machine stability, maneuverability, and operational control, especially in challenging or slippery terrain.
• Superior Durability & Reliability: Built to withstand the extreme stresses and demands of heavy excavation work, offering exceptionally long service intervals and significantly reducing the need for frequent replacements.
• Minimizes Downtime & Costly Repairs: High-quality construction prevents premature failure, safeguarding your investment and maximizing operational uptime, ensuring your machine remains productive on the job site.