Komatsu Track Bottom Roller PC300-8 Factory Direct Heavy Duty Undercarriage Replacement Parts
1. What is a track roller?
As the backbone of excavator undercarriage systems, track rollers bear the full weight of the machine while enduring extreme ground impacts. Accounting for over 70% of operational resistance, their quality directly determines undercarriage longevity and machine efficiency. Unlike conventional welded rollers prone to structural failure, our friction-welded rollers utilize advanced metallurgical bonding to create seamless, ultra-durable assemblies – delivering 35% longer service life than industry standards.
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:
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100% OEM-matched dimensions
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Forged alloy steel certified to JIS G4051
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raceable heat batch documentation
3. The Cost-Smart Solution for Mining & Heavy Earthmoving
When your PC300-8 faces:
⚠️ Rocky terrain degradation
⚠️ High-hour maintenance costs
⚠️ Unplanned downtime
Our rollers deliver field-proven ROI:
➤ 22% lower rolling resistance = reduced fuel consumption
➤ Interchangeable with Komatsu 70G-75-21100
➤ 3-Year structural warranty
Replace Weakness with Unstoppable Traction
Factory-direct pricing | ISO 9001 certified manufacturing | Global logistics support
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
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Komatsu Track Bottom Roller PC300-8 Factory Direct Heavy Duty Undercarriage Replacement Parts Images
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