Description
Kobelco CK1000 Bottom Roller Information
| Material | 42CrMo, 40Mn2, |
| Technology | Forging |
| Heat Treatment | Whole Quenching and Tempering, then Surface Hardening |
| Advantage | Superior Material; Strict Quality Control; OEM Quality; Large Stock |
| Color | Black / Customer Requirement |
| Brand Name | VM |
| Warranty | 2500 Working Hours / One Year |
Function of Kobelco CK1000 Bottom Roller
The bottom roller serves three primary functions within the crane’s undercarriage system:
Load Support – The rollers bear the full weight of the crane and its lifting loads, transferring that force to the ground through the track system
Track Guidance – As the tracks move, the lower rollers guide the track shoes along their path, ensuring smooth and stable propulsion
Wear Protection – By providing a rolling surface for the track chain, the bottom roller minimizes friction and wear between moving components
Quality Assurance
Impact testing – verifying toughness under dynamic loads
Hardness testing – confirming surface and core hardness meet specifications
Magnetic Particle Inspection (MT) – detecting surface cracks or imperfections
Ultrasonic Testing (UT) – identifying internal defects that could compromise structural integrity
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