KOBELCO CK2500-II, is a high-performance heavy lifting equipment produced by Japan Kobelco Construction Machinery. The comparison of key parameters is as follow:
| Parameters | CK2500-II | Peer Competitors(example) |
| Maximum Lifting Capacity | 250 tons (main boom) | 220-260 tons |
| Main Boom Combination Length | 150 meters | 130-140 meters |
| Engine Power | 298 kW | 280-310 kW |
| Ground Pressure | 0.7 kg/cm² | 0.9-1.2 kg/cm² |
| Intelligent Features | 3D Simulation, Electric Control Management | Basic Electronic Control, 2D Display |
KOBELCO CK2500-II Crane Lower Rollers Details:
| Material | 42CrMo, 40Mn2 |
| Technology | Forging |
| Heat Treatment | Advanced Quenching and Tempering, then Surface Hardness and Deep Hardening |
| Brand Name | EG |
| Warranty | 2500 Working Hours / One Year |
The Track rollers of the crawler crane are manufactured by forging technology, which has significant advantages, mainly reflected in the following aspects:
- The material has superior properties
High Strength and Toughness
Forging changes the metal grain structure under high temperature and high pressure, eliminating internal defects (such as porosity and inclusions), increasing the material’s density, with tensile strength reaching over 1200 MPa and impact toughness improving by 30%-50%. - Long Fatigue Life
The grain flow of forged parts is continuous and aligned with the direction of force on the component, significantly enhancing fatigue resistance, with a lifespan 40%-60% longer than the casting parts. - Accuracy and Reliability
Dimensional Stability
Precision forging can control tolerances within ±0.2mm, ensuring accurate meshing with track shoes and reducing abnormal wear. - Batch Consistency
Forging process parameters (temperature, pressure, speed) are controllable, with product consistency far exceeding casting, and defect rate can be controlled below 0.5%. - Economic Comparison
| Item | Forging Bottom Roller | Casting Bottom Roller |
| Unit Cost | High(about 20%) | Low |
| Service Life | 12000-15000 hours | 7000-9000 hours |
| Maintenance Frequency | Check every 2000 hours | Check every 1000 hours |
Our KOBELCO Track Rollers Structure & Testing:
From track roller’s spare parts, materials, heat treatment, and testing, strictly control each step, to make track rollers have a long working life and perfect performance under working conditions.
| Mechanical Performance | |
| Yield Strength (σs) | 805MPa |
| Tensile Strength (σb) | 925MPa |
| Elongation (δ) | 14.20% |
| Z | 51.40% |
| AKV（-40℃） | 67J |
| Quenching & Tempering (HB) | 270 |
| Hardness (HRC) | 56 |
FAQ:
- Do you support customization or OEM?
Yes, we often produce parts as the client’s drawing, requirements, and Logo.
- How long have you been in this industry?
20+ years of technical team industry experience.
- Do you support third-party inspection?
Yes, also welcome clients to visit our company.
- Do you have ISO or other certifications?
ISO 9001:2015, EG Brand, SGS Testing…
Yantai Evergrowing, specializes in producing Crawler Crane Undercarriage Parts for many years
25+ Crawler Crane Brand
600+ Crawler Crane Model
5000+ Crawler Crane Parts
You can enjoy the one-stop service here!
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