Heavy-Duty D9N Bulldozers Sprocket Segment for Caterpillar CAT Dozer
Our Caterpillar D9N Bulldozer Sprocket Segment, available in 40Mn2/35MnBH dual materials with hardness up to HRC52-58, wear-resistant and impact-resistant; molded to original dimensions for precise fit with D9N, supporting customization for other bulldozer models, ensuring stable track transmission.
| 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.
Designed specifically for the Caterpillar D9N bulldozer, this sprocket segment is available in two cost-effective material options: 40Mn2 alloy steel (focused on tensile strength) and 35MnBH alloy steel (focused on impact toughness) to meet diverse operating requirements. Through a "through-hardening + case carburizing" process, the surface hardness reaches a stable HRC52-58, capable of withstanding the intense friction and impact under heavy-duty operation. Its core features include high wear resistance and deformation resistance while adhering strictly to Caterpillar OEM dimensions. The gear precision and mounting holes are perfectly matched to the D9N model, ensuring precise engagement with the track chain and preventing transmission jams.
Application scenarios include high-intensity operations such as heavy-duty mining, large-scale earthmoving projects, and infrastructure and dam foundation construction. In terms of process standards, multiple quality inspections, from raw material flaw detection to finished product dimensional calibration, fully guarantee the sprocket segment's transmission reliability and service life.
Why Choose Our Caterpillar D9N Sprocket Segment?
1. Adaptable to Different Working Conditions
As a key power transmission component in a bulldozer's track system, the drive wheel must withstand the instantaneous impact force and long-term friction of the track chain. We offer two core materials: 40Mn2 and 35MnBH.
- 40Mn2 material: With a tensile strength of ≥800MPa, it is suitable for stable, long-term heavy-load, low-impact conditions (such as large-scale earthmoving).
- 35MnBH material: With an impact toughness of ≥60J/cm², it is suitable for high-frequency impact conditions such as mining gravel and complex terrain.
Both materials meet the HRC52-58 hardness standard, extending their service life by over 50% compared to ordinary carbon steel.
2. High-Precision Processing for Smooth Transmission
The gears of the sprocket segments are machined using CNC milling technology, ensuring minimal tooth profile errors. Strictly controlled meshing clearance with the original Caterpillar D9N crawler chain prevents track jumping and excessive gear wear caused by meshing deviation during operation. The mounting holes are molded to a 1:1 ratio according to the original factory drawing, eliminating the need for additional hole enlargement or grinding, allowing direct replacement with original parts, reducing equipment downtime during replacement.
3. Strict Quality Inspection for Operational Safety
Each batch of sprocket segments undergoes three inspections before leaving the factory:
- Material inspection: Verify the composition of 40Mn2/35MnBH materials through a spectral analyzer to ensure compliance with standards;
- Hardness inspection: Use a Rockwell hardness tester to sample and test the gear surface to ensure the hardness is stable at HRC52-58;
- Dimension inspection: Calibrate the key dimensions of gears and mounting holes through a coordinate measuring machine to ensure fitting accuracy;
Unqualified products are directly rejected to eliminate the risk of transmission failure caused by accessory quality.
Tooth Rough Machining
The sprocket blank is machined on a CNC lathe or gear hobbing machine to form the basic tooth profile.
Inner Ring Installation & 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 Caterpillar
In addition to the Caterpillar D9N, leveraging our proven material formulation and processing system, we've fully adapted drive wheel segments for mainstream bulldozers, including popular models from Caterpillar, Komatsu, and Shantui. All models maintain the HRC52-58 hardness and factory-matched dimensions to ensure consistent quality. If you require drive wheel segments for other bulldozer models or require custom, unconventional specifications, please contact us at any time, providing your model number. We'll match you with a precise adaptation solution, enabling one-stop shopping and reducing the costs of dealing with multiple suppliers.
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| CATERPILLAR | D3 | D3C | D3K | D3K2 | D4 | D4C | D4H | D4K2 |
| D5 | D5B | D5C | D5H | D5K | D5K2 | D5LGP | D5N | |
| D5R | D6 | D6B | D6C | D6D | D6G | D6H | D6K | |
| D6K2 | D6M | D6N | D6R | D6T | D6XE | D7 | D7E | |
| D7G | D7H | D7R | D7R II | D7T | D8 | D8H | D8K | |
| D8L | D8N | D8R | D8T | D9 | D9G | D9H | D9N | |
| D9R | D9T | D10 | D10N | D10R | D10T | D10T2 | D11 | |
| D11N | D11R | D11T | D11T CD | D11T2 | D3XL | D5XL | D6XL | |
| D6LGP | D7LGP | D8LGP | D9LGP | D5C LGP | D4G XL | D6G2 | D5G | |
| D3G | D3C III | D4E | D5E | D6E | D6S | D8S | D10S | |
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Ordering & After-Sales Tips
- Availability: Caterpillar D9N sprockets (materials 40Mn2 and 35MnBH) are always in stock and will be shipped promptly upon order.
- Material Selection: Please consult customer service for recommendations based on your application (e.g., 35MnBH for mining, 40Mn2 for earthmoving).
- Compatibility Verification: Provide your Caterpillar bulldozer serial number for a free compatibility check to avoid purchasing the wrong model.
For more information or sample requests, 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.
