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Help CenterExtreme-Velocity NDI Polyurethane Wheels for Ultra-High-Speed Roller Coasters
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NDI-Polyurethane Ultra-High-Speed Roller Coaster Wheels
Engineering the Ultimate Blend of Safety, Speed, and Durability
In the world of ultra-high-speed roller coasters, wheels are the only thing standing between gravity and engineering excellence. Our NDI (Naphthylene Diisocyanate) based polyurethane wheels are formulated to withstand extreme centrifugal forces, rapid heat buildup, and massive dynamic loads without delamination or flat-spotting.
Why NDI Polyurethane? (The Vulkollan® Standard)
Standard polyurethanes (TDI/MDI) often fail under the intense kinetic energy of modern coasters. Our NDI-formulated wheels offer:
Extreme Dynamic Load Capacity: Maintains structural integrity under rapid G-force fluctuations.
Superior Heat Dissipation: NDI chemistry features the lowest hysteresis (internal heat buildup) of any elastomer, preventing "blowouts" during back-to-back ride cycles.
Minimal Rolling Resistance: Maximizes coasting distance and speed retention, allowing for smoother ride profiles.
High Abrasion Resistance: Dramatically extends the service life of the wheel, reducing maintenance intervals and track wear.
Technical Specifications
Property |
Value / Standard |
Hardness Range |
85 Shore A – 96 Shore A |
Tensile Strength |
50 - 60 MPa |
Elongation at Break |
500 % - 650 % |
Rebound Resilience |
> 70% |
Operating Temperature |
-30°C to +120°C (Peak) |
Core Material |
Forged Aluminum / Ductile Iron / Steel |
Bonding Strength |
Exceeds material tear strength (Advanced Primer Tech) |
Advanced Safety Features
Zero Delamination Guarantee: Our proprietary bonding process ensures the polyurethane remains chemically fused to the hub even under emergency braking or high-speed turns.
Flat-Spot Resistance: High "compression set" resistance ensures wheels remain perfectly round even after the coaster sits at the station for extended periods.
Vibration Damping: Engineered to absorb track imperfections, providing a "glass-smooth" rider experience and protecting the coaster chassis from fatigue.
Application Profiles
Launch Coasters: Withstands instant torque and rapid acceleration from 0 to 150+ km/h.
Hyper/Giga Coasters: Optimized for sustained high speeds and massive vertical drops.
Inverted Coasters: High lateral load resistance for zero-G rolls and tight corkscrews.
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