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Brand Name : YT
Model Number : D4H D4D D4E
Place of Origin : China (Mainland)
MOQ : 1PCS
Price : Negotiable
Payment Terms : L/C,T/T
Supply Ability : 10000 PCS/Month
Delivery Time : 7-30 Days
Packaging Details : Standard Exporting Packing
Condition : New
Color : Grey, Yellow, Other
Certification : CE, ISO9001: 2000
Finish : Smooth
Model NO. : D4H D4D D4E
Material : 50mn
Quality : Genuine Quality
Technique : Forging & Casting
As the critical load-bearing core of excavator undercarriages, track rollers bear the machine’s full weight, withstand severe ground impacts, and generate over 70% of total operational resistance. Each roller is subjected to high-pressure gas testing at 0.6 MPa (6 bar) – 60% above industry norms – to guarantee reliability in extreme operating environments. This critical QC measure prevents potential oil leaks at the source, resulting in assemblies validated for >10,000-hour lifespans despite persistent immersion in high-abrasion media like mud and sand.
Each roller is subjected to high-pressure gas testing at 0.6 MPa (6 bar) – 60% above industry norms – to guarantee reliability in extreme operating environments. This critical QC measure prevents potential oil leaks at the source, resulting in assemblies validated for >10,000-hour lifespans despite persistent immersion in high-abrasion media like mud and sand.
Precision-forged shells undergo specialized deep-case hardening followed by quench-tempering treatments, creating an optimal balance of surface resilience and structural integrity. This controlled thermal processing achieves critical performance benchmarks: a Rockwell 60-65 HRC surface hardness for extreme wear resistance, 450MPa+ tensile strength to withstand high-impact loads, and triple-layer chrome plating on shafts that combats corrosion while minimizing friction. Together, these properties deliver exceptional durability in abrasive operating environments.
Our re-engineered internal raceways and optimized tapered bearings achieve 30% more efficient load force distribution. This advanced geometry prevents two critical failure modes: premature flange wear caused by localized stress concentrations, and bending deformation during high-cycle fatigue operations. By eliminating these failure points, the system maintains structural integrity under sustained cyclical loading – extending service life and reducing unplanned downtime.
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Factory-Direct Pricing | ISO 9001 Certified Quality | Global Logistics Network
* 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
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Caterpillar OEM Quality Undercarriage Spare Parts For D4H D4D D4E Double Flanges Track Rollers for Bulldozer and Harvester Images |