Description
Kobelco 7055 Crane Bottom Roller Information
| Material | 40Mn2 high-strength alloy steel |
| Technology | Forging |
| Heat Treatment | Whole quenching & tempering + surface hardening |
| Bushing | 100% bronze bushing for enhanced wear resistance |
| Quantity per Machine | 18 pieces |
| Color | Black / Customer Requirement |
| Warranty | 2,500 working hours / One Year |
| Condition | 100% New |
Production Process of Kobelco 7055 Bottom Roller
Quality Assurance
Each Kobelco 7055 bottom roller undergoes comprehensive inspection:
Material Composition Analysis – Spectrometer verification of 40Mn2 chemical composition
Hardness Testing – Confirmation of surface and core hardness at specified locations
Dimensional Inspection – Verification against original manufacturer drawings
Surface Quality Check – Detection of any casting or machining defects
Leakage Test – Ensuring proper seal integrity and lubrication retention
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