Bulldozer Spare Parts D475 Drive Sprocket Segment fit Komatsu Dozer
Premium drive sprocket segments designed for Komatsu D475A bulldozers. Forged from high-strength alloy steel and treated with advanced heat-hardening technology, these sprocket segments deliver exceptional durability and stability under extreme torque, ensuring maximum traction and extended undercarriage life in mining and quarry applications.
| Material | 40Mn2/35MnBH |
|---|---|
| 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 Komatsu D475 drive sprocket segment is one of the most critical components in the power transmission system of large crawler bulldozers. Operating under extreme load conditions, it transfers the engine’s massive torque to the track chain, driving the entire undercarriage forward through rock, clay, or abrasive terrain.
Built for heavy-duty earthmoving and mining environments, our D475 sprocket segments are engineered for endurance and precision. Each segment is meticulously designed to deliver optimal tooth engagement, high torque capacity, and consistent power transmission. Whether used in deep excavation, overburden removal, or open-pit mining, these sprocket segments ensure the bulldozer maintains smooth motion, reduced vibration, and superior wear life.
Material Composition and Metallurgical Strength
At the heart of our sprocket segments lies high-grade boron alloy steel (35MnB / 40Mn2), chosen for its outstanding balance between hardness and toughness. Through a combination of forging, controlled quenching, and tempering, the steel structure achieves both surface hardness and core resilience — essential for withstanding the enormous mechanical stress of a D475-class dozer.
Material Highlights:
- Surface hardness: HRC 52–58, ensuring superior resistance against scuffing and abrasion.
- Core strength: Excellent ductility to resist cracking and impact deformation.
- Uniform heat treatment depth for even wear across all teeth.
This metallurgical process produces a sprocket segment that not only resists surface wear but also retains inner strength, preventing premature failure even in continuous 24-hour operation cycles typical of mining projects.
Precision Manufacturing Process
To ensure each D475 sprocket segment meets our strict performance standards, KINTON PARTS follows a precise 6-step manufacturing process, combining advanced metallurgy and machining accuracy:
Tooth Rough Machining
The sprocket blank is machined on a CNC lathe or gear hobbing machine to form the basic tooth profile.
Precision Machining
The inner ring is inserted and the entire part is precisely machined to ensure concentricity and dimensional accuracy.
Drilling
Mounting and lubrication holes are drilled to meet the installation and functional requirements.
Tooth Grinding & Finishing
After heat treatment, the sprocket teeth are ground or polished to remove burrs and ensure smooth engagement.
Surface Cleaning
The sprocket undergoes surface cleaning, removing scale and residue, preparing it for surface treatment.
Painting & Final Coating
Anti-corrosive coating is applied, followed by rust-proof packaging to ensure safe delivery worldwide.
OEM Compatibility
Our drive sprocket segments are engineered as direct replacements for:
Komatsu D475A-1, D475A-2, D475A-3, D475A-5, D475A-6 bulldozers
Each replacement part conforms to OEM standards for material composition, pitch accuracy, and mounting geometry, guaranteeing reliable compatibility with Komatsu original undercarriage systems.
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| KOMATSU | D20 | D21 | D31 | D37 | D39 | D41 | D50 | D53 |
| D55 | D57 | D60 | D61 | D65 | D68 | D75 | D80 | |
| D85 | D85A-12 | D87 | D90 | D95 | D135 | D155 | D155A-1 | |
| D155A-2 | D155A-3 | D155A-5 | D155AX-6 | D155AX-7 | D275 | D275A-2 | D275AX-5 | |
| D275AX-5EO | D355 | D355A-3 | D375A-2 | D375A-3 | D375A-5 | D375A-6 | D375A-8 | |
| D475A-2 | D475A-3 | D475A-5 | D475A-8 | D475A-8EO | D575A | D575A-2 | D575A-3 | |
| D65EX-12 | D65PX-12 | D61EX-15 | D61PX-15 | D61EX-24 | D61PX-24 | D37EX-21 | D37PX-21 | |
| D39EX-21 | D39PX-21 | D39EX-24 | D39PX-24 | D51EX-22 | D51PX-22 | D51EX-24 | D51PX-24 | |
| D85EX-15E0 | D85PX-15E0 | D85EX-18 | D85PX-18 | D155AX-8 | D155AXi-8 | D375A-8EO | D475A-8EO | |
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Design Features and Advantages
The D475 sprocket segment is designed with precision tooth geometry and reinforced bolt connection points to ensure optimal torque transfer. It offers several key advantages:
- Optimized Tooth Profile: Reduces chain wear and vibration during high-load operation.
- Extended Tooth Root Reinforcement: Enhances strength under heavy impact.
- Segmented Design: Allows individual segment replacement, minimizing downtime.
- Corrosion-Resistant Coating: Provides additional protection in wet or acidic soil conditions.
- Improved Power Efficiency: Reduces frictional losses between sprocket and track link.
By combining advanced metallurgy with geometric optimization, these sprockets extend both track chain and undercarriage lifespan, resulting in higher productivity and lower operating costs for large-scale dozing projects.
Performance in Harsh Environments
Komatsu D475 bulldozers operate in the most challenging terrains—coal mines, copper pits, quarries, and large earthmoving projects. Our sprocket segments are specifically designed to perform in these extreme environments.
They maintain stable performance in:
- Abrasive materials such as granite, basalt, and gravel.
- High-impact areas like ripper operations or rock pushing.
- Extreme temperatures, from freezing tundras to tropical heat.
The hard surface layer ensures minimal tooth wear, while the tough core resists cracking from sudden impacts, guaranteeing reliable service in every working condition.
Quality Inspection and Testing
All D475 sprocket segments undergo strict inspection and testing to ensure reliability before delivery:
- Ultrasonic testing for internal flaws or inclusions.
- Hardness testing across multiple points for uniformity.
- Dimensional verification for pitch, bolt alignment, and tooth shape.
- Dynamic load simulation replicating high torque and stress cycles.
Only sprocket segments that pass these comprehensive tests are approved for shipment, ensuring that customers receive flawless, field-proven components for their Komatsu dozers.
Why Choose Our D475 Sprocket Segments
With decades of expertise in bulldozer undercarriage engineering, we specialize in manufacturing OEM-equivalent components for Komatsu machinery. Our D475 sprocket segments combine forging precision, heat treatment technology, and rigorous quality control to meet the extreme requirements of heavy earthmoving operations.
Customers around the world rely on our parts for their accuracy, durability, and long-term cost efficiency, making them the trusted choice for replacing worn sprockets in Komatsu D475 bulldozers.
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.
