Komatsu D475 Undercarriage Spare Parts - Bottom Single Flange/Double Flange Heavy Duty Track Roller 198-30-00544/198-30-00653

1. What is a track roller?

Track rollers form the bulldozer’s frontline defense: carrying its full weight, enduring punishing ground impacts, and producing over 70% of operational resistance. To ensure battlefield-grade reliability, every unit is subjected to rigorous 0.6 MPa (6 bar) gas pressure testing – a benchmark 60% stricter than industry requirements. This proactive leak prevention at the source yields assemblies proven for >3,000 operational hours, unfazed by perpetual immersion in mud/sand abrasives.

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 D475 Bulldozer
Are you tired of watching your D475 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 D475 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