Komatsu Bulldozer D375 Drive Sprocket Segment Parts 195-27-33110 Supplier
High-performance sprocket segments for Komatsu D375 bulldozers, manufactured from premium boron-alloy steel and precision heat-treated for maximum durability. Designed to handle the extreme torque and ground pressure of large mining and earthmoving machines, these sprocket segments ensure stable power transfer and long service life.
| Material | 35mnbh/40Mn2 |
|---|---|
| Surface Hardness | HRC53-58,deepth: 8-12mm |
| 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 D375 drive sprocket segment is a key power transmission component located at the rear of the undercarriage, responsible for transferring engine torque from the final drive to the track chain. On massive crawler dozers like the D375A and D375A-6, this segment must endure enormous forces, constant shock loads, and heavy abrasive wear from soil and rock.
Our replacement sprocket segments are designed specifically for these heavy-duty demands. Every segment is precision-machined and thermally optimized to deliver high tensile strength and consistent tooth engagement, reducing stress on the chain and final drive assembly. The result is smoother traction, longer wear life, and reliable operation even under the harshest mining or quarrying environments.
Material and Heat Treatment
To withstand the punishing conditions that Komatsu D375 dozers face, we use high-grade 35MnBH and 40Mn2 boron-alloy steel. These materials offer a superior combination of wear resistance, tensile strength, and impact toughness.
Each sprocket segment undergoes a deep induction hardening process, followed by controlled tempering to ensure both hardness and ductility.
Key material advantages:
- Surface hardness: HRC 52–58, protecting against abrasive wear.
- Core strength: maintains high impact resistance to prevent cracking.
- Uniform hardness depth: ensures even tooth wear and long-term performance.
This advanced heat treatment not only strengthens the surface but also refines the microstructure, allowing the sprocket to perform consistently in extreme temperatures and under high torque loads.
Manufacturing Process
Every Komatsu D375 sprocket segment is produced through a strict multi-stage manufacturing process, ensuring the highest standards of dimensional accuracy and mechanical integrity.
Manufacturing steps include:
- Alloy Steel Selection – Only premium-grade forged steel blanks are selected and tested for chemical consistency.
- Hot Forging and Rough Shaping – Improves metal grain alignment and enhances fatigue resistance.
- CNC Machining – Achieves tight tolerances for bolt holes, pitch circle, and tooth profiles.
- Induction Hardening – Reinforces working surfaces for maximum wear protection.
- Tempering – Relieves internal stress and maintains structural balance.
- Surface Treatment – Includes anti-corrosion coating and precision finishing.
- Final Inspection – Every segment undergoes dimensional and hardness verification before packaging.
This process guarantees that each sprocket segment provides perfect fitment, smooth operation, and consistent quality across every batch.
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
The sprocket is coated with durable industrial paint (available in various colors), providing corrosion resistance and a clean, professional appearance.
OEM Compatibility
Our sprocket segments are fully compatible with:
- Komatsu D375A-1 / D375A-2 / D375A-3 / D375A-5 / D375A-6 bulldozers
We ensure that each replacement segment meets or exceeds OEM specifications for pitch accuracy, bolt-hole geometry, and surface finish — making installation straightforward and ensuring precise engagement with the undercarriage track links.
| 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.
Performance and Design Advantages
The D375 drive sprocket segment is engineered for extreme duty. Its robust construction and carefully optimized tooth design offer significant performance benefits:
- Superior Wear Resistance: The hardened surface resists deformation and pitting, even in rocky or sandy conditions.
- High Torque Capacity: Withstands the massive engine output of the D375 without distortion.
- Accurate Chain Engagement: Precision-machined profiles reduce vibration and chain slippage.
- Segmented Structure: Allows easier replacement of worn sections, lowering maintenance costs.
- Extended Service Life: Optimized metallurgy and surface finish minimize wear on both sprocket and chain.
This combination of strength, precision, and longevity ensures excellent return on investment for operators working in mining, construction, and large-scale earthmoving.
Applications
Komatsu D375 bulldozers are widely used in:
- Open-pit mining and heavy quarrying
- Earthmoving and dam construction
- Large-scale infrastructure and reclamation
- Tough terrain and high-load pushing applications
Our sprocket segments are specifically designed to perform in these demanding settings, ensuring that your equipment maintains traction, stability, and productivity.
Maintenance and Replacement Tips
To achieve maximum life from your D375 sprocket segments:
- Regularly inspect for tooth rounding or visible wear patterns.
- Replace all sprocket segments together to maintain proper alignment.
- Check track chain pitch before installation to prevent premature tooth wear.
- Keep the undercarriage clean and tension properly adjusted.
Following these maintenance practices will significantly extend the lifespan of both sprocket and chain assemblies, ensuring consistent performance and lower operating costs.
Why Choose Our Sprocket Segments
Our company specializes in OEM-quality Komatsu undercarriage components, offering a full line of track shoes, links, rollers, and idlers compatible with D375 and other large crawler dozers. With advanced forging technology, precision heat treatment, and stringent QC standards, we guarantee high strength, consistent accuracy, and exceptional durability for every part we deliver.
When reliability matters most, our Komatsu-style sprocket segments are your best solution for maintaining heavy-duty performance in the field.
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.
