Heavy-Duty Komatsu Bulldozer D85ESS-2 Upper Carrier Roller
This carrier roller is purpose-built for the Komatsu D85ESS-2 bulldozer, designed to support the upper section of the track chain, ensuring smoother movement, reduced wear, and optimal track tension. With reinforced material and advanced surface hardening treatment, it delivers stable performance in extreme construction and mining environments.
| 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.
Role of the Carrier Roller in the D85ESS-2 Bulldozer Track System
In the D85ESS-2, the carrier roller plays a crucial role in maintaining proper alignment and support of the track chain’s top section. Unlike track rollers that bear the full weight of the dozer, the carrier roller minimizes track sag, ensuring smoother chain movement and reducing the lateral force on the entire undercarriage system. For a heavy-duty bulldozer like the D85ESS-2, reliable upper rollers are vital for stability and long-term track performance.
Material and Heat Treatment for Longevity
The carrier roller for the D85ESS-2 bulldozer is forged from high-quality alloy steel such as 50Mn, offering the right combination of toughness and machinability. After CNC precision machining, the roller undergoes advanced heat treatment, which enhances its surface hardness to HRC 52–58 while maintaining a tough core. This treatment improves:
- Wear resistance during continuous track movement
- Impact resistance in heavy-duty ground contact
- Fatigue life under long-term vibration and load cycles
The bushing and shaft components are also treated to resist galling and reduce internal wear, while reliable sealing mechanisms keep debris out and lubrication in.
Manufacturing Process for D85ESS-2 Carrier Roller
Our manufacturing process includes high-precision forging, CNC machining, induction hardening, and full-assembly testing. Each carrier roller passes multiple quality checks to ensure dimensional accuracy and sealing integrity. Our factory applies strict ISO-compliant standards to guarantee performance consistency across batches.
Heat Treatment
Machining Process
CNC turning and milling ensure dimensional accuracy
Packing
OEM Undercarriage Parts for Komatsu Bulldozer
| 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.
OEM Fit and Replacement Reference for Komatsu D85ESS-2
This carrier roller is designed to replace original Komatsu D85ESS-2 components with full compatibility. Common OEM reference numbers include 14X-30-00141 ( Mine quality ) , 14X-30-00143, ensuring a direct fit for most aftermarket replacements. The roller is engineered to meet original specs for shaft diameter, flange width, and bolt hole spacing, making installation quick and reliable.
Application Scenarios for D85ESS-2 Carrier Rollers
The D85ESS-2 bulldozer often works in harsh and high-impact environments, where undercarriage durability is critical. This upper roller performs effectively in:
- Earthmoving and grading operations
- Open-pit mining
- Forest road construction
- Heavy-load slope leveling
By supporting the top of the track chain, the roller prevents excessive chain sag and lateral wobble—key to ensuring traction and machine balance.
Why Choose Our Bulldozer Rollers?
Choosing our top rollers gives you multiple competitive advantages:
- Forged steel construction + CNC precision
- OEM-grade design with consistent quality control
- Available for wholesale or customized branding
- Factory-direct pricing and global logistics support
Our rollers are trusted by contractors, dealers, and repair centers worldwide.
Maintenance Tips for Extended Service Life
To keep your D85ESS-2 carrier rollers in top condition:
- Clean the roller regularly to prevent buildup of debris or mud
- Monitor for signs of oil leakage, seal damage, or play in rotation
- Replace worn-out or cracked components immediately
- Ensure consistent lubrication in grease-filled rollers, especially after long work intervals
Periodic checks reduce breakdown risk and ensure continuous job site productivity.
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.
