Komatsu Undercarriage Spare Parts For Mini Bulldozer D65 - Heat-Treated Bottom Track Roller Assembly - 141-30-00570

1. What is a track roller?

"Functioning as the critical backbone of excavator undercarriage systems, track rollers shoulder the machine's entire operational weight while simultaneously withstanding severe ground impacts. Significantly, these components are responsible for generating over 70% of the total operational resistance. Consequently, their inherent quality is a primary determinant of both undercarriage longevity and overall machine efficiency. Unlike conventional welded rollers, which are susceptible to premature structural failure, our advanced friction-welded rollers employ a sophisticated metallurgical bonding process. This technology creates seamless, ultra-durable assemblies, demonstrably delivering a service life that exceeds industry standards by 35%."

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

✅ Military-Grade Sealing Integrity

Every roller undergoes 0.6Mpa pressurized gas testing – exceeding OEM specifications to eliminate oil leakage and guarantee 10,000+ hour lifespans in mud, sand, and abrasive environments.

✅ Forged Alloy Armor Defense

Precision-forged shells undergo deep-case hardening and quench-tempering treatments, achieving:

• Rockwell 60-65 HRC surface hardness
• 450MPa+ tensile strength
• riple-layer chrome plating on shafts

✅ Battle-Proven Load Capacity

Re-engineered internal raceways and tapered bearings distribute load forces 30% more efficiently, preventing:

• Premature flange wear
• Bending deformation under cyclical load

✅ Genuine Komatsu DNA

Direct-from-factory components include:

• 100% OEM-matched dimensions

• Forged alloy steel certified to JIS G4051

• raceable heat batch documentation

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

Conquer Rocky Terrain & Slash Costs on Your D20

Tired of your D65 suffering from:

• Premature roller failure on harsh, rocky ground?
• Spiraling maintenance bills as hours climb?
• Profit-killing unplanned downtime?

Upgrade to Our D20 Rollers for Proven Results & ROI:

• ✅ Save 22% on Fuel: Advanced design delivers significantly lower rolling resistance.
• ✅ Perfect Komatsu Fit: Direct interchange with 70G-75-21100 rollers - installs seamlessly.
• ✅ Unmatched Durability: Built tough with premium alloys, backed by a robust 3-Year Structural Warranty.

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