Description
| Product Name | Liebherr HS855 HS855HD Lower Roller, Bottom Rollers |
| Material | 40Mn2 |
| Technique | Whole quenching and tempering, then surface hardening |
| Warranty time | 1 year/2500 working hours |
| Certification | ISO9001 |
| Trade Terms | EXW, FOB, FCA, CFR, CIF, DAP, DDU |
| Delivery Time | 7-35days after payment |
Heat Treatment Protocol
What truly distinguishes the Liebherr HS885 bottom roller is its comprehensive heat treatment regimen. The component undergoes:
Quenching and Tempering: This process enhances core strength and fracture resistance, ensuring the roller maintains structural integrity even under peak loading conditions. The core hardness typically achieves HRC28-32, providing the necessary toughness to absorb impact forces without failure.
Surface Induction Hardening: Following the core treatment, the roller undergoes surface hardening techniques such as induction hardening to achieve surface hardness of HRC54-58. This creates a wear-resistant exterior that can withstand the abrasive conditions encountered during track rotation and ground contact. The differential hardness profile—a tough core combined with a hard surface—extends service life significantly.
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