Undercarriage Parts D155 Dozer Carrier Roller for Komatsu Bulldozer
The Komatsu D155 bulldozer carrier roller is a premium undercarriage component designed to support the upper track chain and maintain stable track movement. Made from forged alloy steel and enhanced with heat treatment and sealed lubrication, it ensures long-lasting durability and smooth operation in extreme working conditions.
| Material | 50Mn/40MnB |
|---|---|
| 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 carrier roller of the Komatsu D155 bulldozer plays a vital role in the undercarriage system. Positioned at the top of the track frame, it supports the upper section of the track chain, prevents sagging, and ensures proper alignment during operation. A durable carrier roller not only reduces wear on the track chain but also improves machine stability and operating efficiency. For a machine as powerful as the D155, which is often deployed in large-scale earthmoving and mining projects, the reliability of the carrier roller is critical to avoiding downtime and costly repairs.
Material and Heat Treatment
To withstand the heavy loads and abrasive conditions of dozing operations, the Komatsu D155 carrier roller is manufactured from premium alloy steel. The roller surface undergoes deep induction heat treatment, giving it exceptional hardness (HRC 52–58) while keeping the core tough enough to absorb impacts.
Key material features include:
- Forged steel body for maximum strength and resilience.
- Heat-treated tread surface for extended wear resistance.
- Tough, shock-absorbing structure to handle rocky and abrasive terrains.
- Corrosion-resistant finish for longer service life.
Features & Benefits
Designed for OEM-level fitment, this component is fully compatible with Komatsu D155 bulldozers, ensuring precise installation and reliable performance. Its hardened surface significantly reduces abrasion, making it highly durable even in demanding rocky or sandy environments. The sealed and lubricated design, featuring floating seals, effectively retains grease while preventing contaminants from entering, which helps maintain smooth and stable operation. Built to withstand heavy loads, it reliably supports the substantial weight of the D155 during continuous work. At the same time, its durability and performance contribute to reduced replacement frequency, ultimately minimizing downtime and lowering long-term operating costs.
Manufacturing Process
Every Komatsu D155 carrier roller follows a strict, multi-step production procedure to ensure quality and durability:
Heat Treatment
roller surfaces hardened for extreme wear resistance
Machining Process
CNC equipment ensures accurate dimensions and tight tolerances.
Packing
secure wooden crates or pallets ensure safe handling and delivery worldwide
Compatibility & OEM Reference
This carrier roller is specifically engineered for the Komatsu D155 bulldozer and is compatible with its various undercarriage configurations.
Reference model for D155AX-6: 17A-30-00720 (17A-30-00721)
✅ OEM reference numbers available upon request.
| 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.
Quality Assurance
Before delivery, each roller undergoes multiple inspection processes:
- Hardness Testing – to verify the effectiveness of heat treatment.
- Dimensional Accuracy Checks – ensuring the roller fits OEM specifications.
- Seal Integrity Testing – confirming lubrication retention and dust protection.
- Performance Simulation – testing under load to replicate real-world operating conditions.
Application Scenarios
The Komatsu D155 bulldozer is a heavy-duty crawler machine widely used in:
- Mining & Quarrying – capable of handling extreme loads and abrasive ground conditions.
- Large-Scale Earthmoving – reliable performance in dam building, land reclamation, and site preparation.
- Road Construction – stable track performance when working on gravel, soil, or rocky terrain.
- Forestry & Agriculture – ensures smooth operation on muddy and uneven landscapes.
In all of these environments, the carrier roller maintains proper track alignment, reducing stress on the track chain and increasing the overall service life of the undercarriage.
Maintenance Tips
- Clean the undercarriage frequently to remove mud, sand, and rocks.
- Inspect rollers for oil leakage or seal damage regularly.
- Replace rollers in pairs or sets to ensure even wear distribution.
- Follow Komatsu’s recommended service schedule for maximum part longevity.
Packaging & Delivery
The Komatsu D155 carrier rollers are packed with anti-rust oil coating and shipped in sturdy wooden crates or pallets. Each package is clearly labeled for easy identification, and bulk packaging options are available for large orders.
👉 Looking for reliable Komatsu D155 bulldozer carrier rollers? Contact us today for OEM reference support, technical consultation, and competitive pricing.
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.
