Drive Wheel / Sprocket Assembly | P/N 21N-271-1171

A Direct Replacement for Komatsu PC1000 | Engineered & Manufactured by CQCTRACK

• OEM Part No.: 21N-271-1171
• Compatible with: Komatsu PC1000-6, PC1000-7
• Built to Endure Extreme Mining & Quarry Conditions

Product Overview

The Komatsu 21N-271-1171 Drive Wheel Assembly is the cornerstone of your PC1000′s mobility, enduring immense stress with every cycle. Sourcing a reliable replacement is critical to protecting your investment and avoiding catastrophic final drive failure.

This assembly is proudly manufactured by CQCTRACK, a specialist in heavy-duty undercarriage components. We don’t just source parts; we engineer and forge them to exacting standards. Our 21N-271-1171 is a precision-engineered, direct OEM replacement that delivers exceptional wear life and impact resistance, ensuring your Komatsu PC1000 remains operational in the world’s most challenging environments.

Key Features & Engineering Advantages

• CQCTRACK Forged Alloy Steel Core
  • Feature: Constructed from superior 41CrMo4 Alloy Steel using a closed-die forging process under intense pressure.
  • Benefit: This creates a continuous grain flow, resulting in unparalleled toughness and fatigue strength, virtually eliminating the risk of tooth breakage under high-impact loads.
• Advanced Induction Hardening Process
  • Feature: Sprocket teeth undergo computer-controlled induction hardening to achieve an optimal hardened case depth of 5-8mm with a surface hardness of 55-60 HRC.
  • Benefit: Provides maximum resistance to the abrasive wear caused by track bushing rotation, significantly extending service life and preventing premature sprocket “hooking.”
• Precision CNC Machining for Guaranteed Fit
  • Feature: Critical interfaces—including the spline bore, pilot diameter, and mounting flange—are machined on advanced CNC systems.
  • Benefit: Ensures a perfect, direct bolt-on fit with the final drive and perfect alignment with the track chain. This eliminates installation issues and protects adjacent components from abnormal wear.
• Integrated Seal & Protection System
  • Feature: Designed with precise grooves and surfaces to ensure compatibility with OEM seal kits, protecting the final drive interface from contaminants.
  • Benefit: Safeguards your final drive investment by ensuring a secure, sealed connection that keeps abrasive particles out.

Technical Specifications & Compatibility

The CQCTRACK Quality Difference

1. Vertical Manufacturing: We control the entire process from raw material to finished product, ensuring consistent quality and traceability.
2. Full Material Certification: Every batch comes with complete mill certificates and heat treatment documentation.
3. Rigorous Non-Destructive Testing: 100% of our drive wheels undergo Magnetic Particle Inspection (MPI) to detect any surface or sub-surface flaws before they leave our factory.
4. Proven Field Performance: CQCTRACK components are trusted by mine operators and heavy equipment fleet owners globally for their reliability and cost-effectiveness.
5. Global Logistics Expertise: We are adept at handling the packaging and shipping of oversized parts to any destination, ensuring timely delivery to your site.

Frequently Asked Questions (FAQ)

Q1: Is this CQCTRACK sprocket a direct fit for my Komatsu PC1000?
A: Yes, absolutely. The CQCTRACK 21N-271-1171 is engineered to be a direct, bolt-for-bolt replacement for the original Komatsu part. It matches all OEM dimensional, spline, and hardness specifications.

Q2: How does CQCTRACK’s forging process benefit my operation?
A: Forging aligns the steel’s grain structure to the shape of the sprocket, creating a part with superior impact and fatigue strength. For a machine as powerful as the PC1000, this means exceptional resistance to shock loads from tramming over rock, leading to greater reliability and a lower risk of unexpected failure.

Q3: Do you offer a matched undercarriage set?
A: Yes, we highly recommend it. For the longest service life and optimal performance, replacing the sprocket, track chain, and bottom rollers as a matched set is best practice. We can provide a competitive package quote for a complete CQCTRACK undercarriage system.

Q4: What is the packaging and lead time?
A: The drive wheel is securely packaged with VCI anti-rust protection and robust wooden crating for safe transit. Lead times are competitive; please contact our sales team with your requirements for an accurate timeline and freight quote.

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Partner with CQCTRACK for Unmatched Reliability

Don’t compromise on the component that drives your productivity. Choose CQCTRACK for a PC1000 Drive Wheel Assembly built to perform. Contact us today for a competitive quote and discover the CQCTRACK difference.