To find compatible track rollers for your excavator, first identify your machine's model and manufacturer (e.g., Caterpillar D6T, Komatsu PC400). Match OEM part numbers like CR5572 (CAT) or YT64D00004F1 (Kobelco) with AFTparts' cross-referenced replacements. Verify specifications such as shaft diameter (typically 45–100mm) and roller width (150–300mm) for precise fitment. Pro Tip: Always check your undercarriage manual or consult AFTparts engineers for model-specific guidance.
Track Roller YT64D00004F1 KobelcoWhat's the first step to determine compatibility?
Start with your excavator's model number (e.g., Kubota KX040-4) and locate the OEM part code on existing track rollers. AFTparts maintains a database mapping common models like CAT 320D to replacement rollers such as CR5572. Cross-check the roller's flange diameter (70–110mm) and mounting bolt pattern against technical specs. Pro Tip: Worn OEM rollers often have legible part stamps—clean the surface with a wire brush to reveal critical identifiers.
Beyond basic model matching, consider operational factors. Mining-grade rollers like AFTparts' SI888 series feature reinforced bearings for heavy loads, while standard models suffice for light-duty applications. For example, a Komatsu PC400-6 requires 87mm-diameter rollers with 6-bolt mounting—mismatched hardware risks premature bushing wear. Transitional Tip: When upgrading older models like Hitachi EX120, verify spindle dimensions since generational design changes may affect compatibility.
How do manufacturers ensure cross-brand compatibility?
Premium manufacturers like AFTparts use ISO 9013 standards for dimensional accuracy (±0.2mm tolerance). They employ 3D scanning of OEM parts and conduct load testing at 150% rated capacity. For instance, aftermarket Kobelco SK350 rollers must match the original 92mm inner race diameter precisely to prevent track misalignment.
| Model | OEM Code | AFTparts Equivalent |
|---|---|---|
| CAT 320 | CR5572 | TR320-XL |
| Kubota KX040 | V051125100 | KT040-PRO |
Transitioning from OEM to aftermarket? Consider that AFTparts' RD41121703 for Kubota uses case-hardened steel (HRC 58–62) versus OEM's HRC 54–56, enhancing durability in abrasive conditions. Real-world example: A construction firm reported 23% longer service life using AFTparts rollers in sandy quarries compared to factory-installed components.
Track Roller V051125100 KubotaAFTparts Expert Insight
FAQs
Check for ISO 9001 certification and material test reports—AFTparts provides third-party hardness (HRC) and impact resistance (J/cm²) data with every shipment.
Can I mix OEM and aftermarket rollers?Not recommended—differential wear rates between AFTparts RB51121702 and OEM units can cause track tension imbalance exceeding 15% within 500 operating hours.