D61E Dozer Undercarriage Parts Sprocket Segment Used on Komatsu Bulldozer
Specialized Sprocket Segment for Komatsu D61E bulldozer, 40Mn2/35MnBH dual materials adapt to different operations, HRC52-58 hardness for wear resistance; lightweight design + precise fit, with full-series bulldozer sprocket segments available for consultation and customization.
| Material | 40Mn2/35MnBH |
|---|---|
| Surface Hardness | HRC52-58,deepth |
| 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.
This Sprocket Segment is designed for Komatsu D61E bulldozer, and tailored to its medium-small operation characteristics, offering two highly compatible materials: 40Mn2 alloy structural steel (focusing on tensile resistance for long-term stable operations) and 35MnBH alloy structural steel (focusing on impact toughness for frequent start-stop), suitable for municipal construction, farmland renovation, medium-small earthmoving and other working conditions.
Processed by "local quenching + surface carburizing", its surface hardness stably reaches HRC52-58, balancing wear resistance and wheel lightweight (single piece weight is 5% lighter than industry average), reducing equipment power consumption.
In core features, the gear adopts "profiling milling" technology, with meshing accuracy within 0.05mm with Komatsu D61E original track chain, avoiding transmission jitter during low-speed operations; mounting holes are fully compatible with original parts, allowing direct assembly without adjustment. Process standards cover raw material composition testing, gear precision calibration, dynamic meshing test and other links, ensuring long-term reliability of the sprocket segment in medium-small working conditions.
Why Choose Our Komatsu D61E Sprocket Segment?
1. Material Advantages
The Komatsu D61E is primarily designed for small and medium-sized applications, and its drive sheaves must balance wear resistance and low energy consumption:
- 40Mn2 material: Tensile strength ≥800MPa, suitable for low-impact, long-duration operations such as municipal road repairs and farmland leveling, with a wheel deformation rate of <0.1%;
- 35MnBH material: Impact toughness ≥60J/cm², suitable for frequent turning and starting/stopping conditions such as rural infrastructure construction and small-scale mining operations, with a 40% increase in tooth fracture resistance;
2. Profiling Milling Technology
According to the pitch characteristics of Komatsu D61E track chain (190mm standard pitch), the sprocket segment gear adopts "profiling milling + manual finishing" technology, with gear surface finish up to Ra0.8μm. The friction force when meshing with original chain is 15% lower than ordinary milling technology, reducing "jitter and noise" during low-speed operation (below 5km/h); the gear root is treated with "arc transition", reducing stress concentration coefficient by 30% and avoiding gear cracking caused by frequent steering.
3. Scenario-Based Quality Inspection
In addition to conventional testing, two targeted tests are added:
- Low-speed meshing test: Simulate Komatsu D61E's common operation speed of 3-5km/h, continuous operation for 200 hours, with gear wear ≤0.2mm;
- Corrosion resistance test: For rainwater, mud environment that may be encountered in municipal operations, 48-hour salt spray test is conducted, with paint film adhesion reaching level 1 (no paint peeling, no rust);
Ensure the sprocket segment adapts to the actual operation scenario of Komatsu D61E and reduce after-sales problems.
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 Undercarriage Parts for Komatsu
In addition to the Komatsu D61E, we now offer comprehensive coverage for mainstream bulldozer sprocket segments, including those from Komatsu, Caterpillar, and Shantui. All sprocket segments maintain the same high-quality materials, HRC52-58 hardness, and factory-matched dimensions, optimized for each model (for example, heavy-duty wear resistance for large models, lightweight for smaller ones). If you require a sprocket for a different model or require custom specifications (such as a special tooth pitch or bore diameter), please provide your model and operating scenario. We will match you with a customized adaptation solution, ensuring "one-stop shopping" and providing a one-year warranty and technical support.
| 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.
Ordering & After-Sales Tips
- Availability: Komatsu D61E sprocket segments (materials 40Mn2 and 35MnBH) are popular. We will arrange shipment as soon as possible after placing an order.
- Recommended Material: 40Mn2 is preferred for municipal and agricultural operations, while 35MnBH is preferred for small mines and complex terrain. Please contact customer service for working conditions compatibility recommendations.
- Compatibility Verification: Provide the production year/serial number of other Komatsu and other bulldozers for a free compatibility check to avoid purchasing the wrong model.
For more information or sample applications, please feel free to contact us!
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.
