توضیحات محصول
Kobelco Undercarriage Parts SK220 Excavator Bottom Assembly Track Roller- Heavy Duty Forged Steel - 24100J11696F3
1. What is a roller?
As key functional elements of belt conveyor systems, rollers play a decisive role in overall operational efficiency.
✔ Functional Role: Rollers serve the critical role of dynamic support for both the conveyor belt and the payload, acting as indispensable foundational components to sustain uninterrupted conveying operations.
✔ Cost Significance: Representing 35% of a belt conveyor’s total installation cost (based on standard operational parameters), roller procurement and maintenance constitute a substantial portion of the equipment’s life-cycle cost framework.
✔ Energy Performance Impact: Roller assemblies generate over 70% of the system’s total operational frictional resistance, directly influencing energy consumption levels and long-term operational cost-effectiveness.
✔ Reliability Criticality: Parameters such as manufacturing precision, sealing integrity, and material durability directly dictate failure rates (e.g., bearing malfunction, premature wear), positioning rollers as a core control parameter in system reliability engineering.
✔ Material Portfolio: The primary material choices remain steel (characterized by high-strength load-bearing capacity, accounting for ~85% of applications) and engineered plastics (offering corrosion resistance and low-noise operation for specialized environments). Material selection must be tailored to conveyanced media properties and environmental conditions.
2. Track Rollers Excavator Advantages / Features
✔ Material Selection:
Manufactured from 40Mn2, 40MnB, or 50Mn steel selected based on operational requirements, ensuring base mechanical properties align with high-strength working environments.
✔ Manufacturing Processes:
Prior to final heat treatment, undergo normalizing precision forging to optimize material microstructure, creating a uniform substrate for subsequent heat treatment.
Track rollers follow a "welding → vertical CNC lathe precision machining" process, eliminating concentricity errors caused by post-welding machining and significantly enhancing geometric accuracy and operational stability.
✔ Heat Treatment Performance:
Achieve HRC52-56 surface hardness with a hardened layer depth of ≥7-10mm (HRC45), delivering superior impact resistance, wear resistance, and fatigue resistance on contact surfaces.
Sealing & Lubrication System: Integrated high-performance floating seals + long-lasting lubrication system enables reliable operation in extreme temperatures ranging from -45°C to +120°C with zero maintenance required, extending component life significantly.
Track rollers utilize direct post-welding precision machining, eliminating concentricity deviations at the process source—providing unmatched resistance to rapid wear and extended service life compared to traditional post-welding machining methods.
All products feature surface hardening and structural reinforcement design to ensure uniform contact stress distribution, meeting durability demands for heavy-duty applications like mining and infrastructure.
3. The Cost-Smart Solution for Mining & Heavy Earthmoving
Eliminate excavator downtime and dominate rock-intensive operations while significantly reducing costs: address the financial drain of inadequate rollers, including premature failure on rock-strewn terrain, escalating repair expenses eroding profit margins, and productivity-killing breakdowns. Introducing the SK220 Rollers—a premium solution engineered for rugged performance, featuring over 3,000 hours of verified durability in granite slurry and extreme rock conditions. With a 2X service life vs. standard rollers, these units incorporate premium alloy construction and a 2-year structural warranty to ensure long-term reliability. Their advanced low-resistance design delivers a 22% reduction in fuel consumption, substantially cutting operational expenses, while their direct OEM compatibility with Kobelco equipment ensures seamless installation with zero adaptation requirements. Ideal for maximizing uptime and cost efficiency in challenging environments, the SK220 Rollers combine durability, efficiency, and hassle-free integration to redefine performance in heavy-duty excavation.
4. Production Processes
5. Track Roller Structure
6. Design/Structure/Main Dimensions of Installation
7. Our Advantages
* World-class quality
* Factory sale directly with reasonable price
* Flexible payment terms including T/T, L/C and so on
* Fast delivery within 30 days after contract established
* After-sale services: video technical support,24h online support
8. Hot Sale Products
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