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Professional Bulldozer Undercarriage Spare Parts - Bottom Track Roller for Komatsu D85ex-15 With Heat-treatment

1. What is a track roller?

Supporting the bulldozer's full weight, enduring severe ground shocks, and generating >70% of operational resistance, track rollers are the undercarriage's critical load-bearing core. Each roller is subjected to a demanding 0.6 MPa (6 bar) high-pressure gas test, 60% beyond typical industry requirements, to ensure reliability in the toughest conditions. This key quality control step prevents oil leaks at their origin, resulting in assemblies validated for lifespans exceeding 10,000 hours despite constant immersion in highly abrasive media like mud and sand.

2. Engineering Excellence: Why Our Track Rollers Dominate Severe Conditions

✅ Military-Grade Sealing Integrity

✅ Forged Alloy Armor Defense
Precision metallurgy for extreme environments:

• Surface Shield: 60-65 HRC hardness → Crushes wear

• Structural Core: 450MPa+ tensile strength → Defies impacts

• Shaft Defense: Triple chrome plating → Outlasts corrosion

✅ Battle-Proven Load Capacity
Engineering breakthroughs eliminating failure modes:
✓ 30% optimized load distribution → Neutralizes stress concentrations
✓ Reinforced raceways/bearings → Prevents flange wear & bending
✓ Sustained cyclical load endurance → Slashes downtime, boosts longevity

3. The Cost-Smart Solution for Mining & Heavy Earthmoving

Conquer Rocky Terrain & Slash Costs on Your D85EX Bulldozer
Are you tired of watching your D85EX suffer on demanding jobsites? Premature undercarriage roller failure plagues your machine when tackling harsh, rock-strewn ground, cutting component life drastically. As operating hours accumulate, you face spiraling maintenance bills that relentlessly erode your bottom line. Worst of all, unexpected breakdowns cause profit-killing unplanned downtime, halting productivity and draining revenue. Isn't it time to overcome these costly challenges and protect your investment?

Now imagine upgrading to our D6 Rollers and achieving proven results & ROI: 

Experience significant fuel savings of 22% thanks to an advanced design delivering dramatically lower rolling resistance. Enjoy a perfect Komatsu fit with rollers that directly interchange with OEM part, ensuring seamless installation. Most importantly, gain unmatched durability – our rollers are built tough with premium alloys and backed by a robust 3-Year Structural Warranty, delivering long-term reliability and cost savings. It's time to overcome the challenges and protect your investment.

Unstoppable Traction & Uptime Start Here:

Factory-Direct Pricing | ISO 9001 Certified Quality | Global Logistics Network

4. Production Processes

5. Track Roller Structure

6. Design/Structure/Main Dimensions of Installation

7. Our Advantages 

* World-class quality

* Factory sale directly with reasonable price

* 35 years experience in Excavator & Bulldozer spare parts manufacturing

* Flexible payment terms including T/T, L/C and so on

* Fast delivery within 30 days after contract established

* Professional sales team, quality inspection, and report, maritime logistics guidance

* After-sale services: video technical support,24h online support

8. Hot Sale Products