EARTHMAX SR 57 – an industrial tire that represents a comprehensive system designed for extreme conditions of closed mountain workings. Each element of this radial tire — from the rubber compound to the carcass structure — is a response to the aggressive environment, where sharp rock formations, abrasive dust, and extreme static loads are a daily reality.
Platform for point strength
The basis is a all-steel radial carcass, where layers of high-strength steel cord are arranged radially from sidewall to sidewall. This design provides excellent resistance to punctures and cuts. Unlike diagonal tires, where the impact is distributed across several layers, causing delamination, the radial structure localizes and absorbs the impact energy without critical damage to adjacent areas. At the same time, the carcass provides sidewall flexibility, leading to a larger and more even contact patch on uneven surfaces. This optimizes traction, transport stability, and operator comfort.
Specifics of tread structure
The extremely deep and massive tread pattern is a strategic resource reserve. The depth is calculated not only for wear but also for self-protection: the thick layer of rubber over the carcass serves as a buffer, absorbing impacts and preventing damage to the steel cord from sharp rock edges. Aggressive, widely spaced lug blocks provide maximum mechanical grip with rocky and unstable terrain, preventing slippage.
Formula of puncture resistance
The specially developed mine compound is the pinnacle of chemical engineering in the field of wear resistance. Its unique formula, enriched with ultra-strong polymers and reinforcing fibers, provides extremely high resistance to cuts, tears, and abrasion. The mixture has reduced thermal load, which reduces the likelihood of overheating and subsequent delamination of the tread layers.
Key features of BKT Earthmax SR 57:
- all-steel cord carcass — maximum protection against punctures and cuts while maintaining flexibility for traction and comfort;
- strategic reserve of rubber for long-term resource and physical protection of the carcass from rock impacts;
- special compound — extreme resistance to tears, abrasive wear, and thermal fatigue for operation in aggressive environments;
- additional elements for protection against biting and wear on the side walls of workings.
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