Heavy-Duty Wheel Rim Bolt for Rock Drill Jumbos Engineered to secure wheel rims on rock drill jumbos, this high-tensile bolt delivers reliable performance in harsh mining environments. Its 10.9 grade construction ensures exceptional strength to withstand heavy loads, vibration, and extreme temperature fluctuations, critical for safe vehicle operation .
Technical Specifications & Design
Core Performance Traits:
High-Tensile Strength: 1200MPa ultimate tensile strength and 900MPa yield strength (ISO 898-1 compliant) provide robust fastening for wheel rims, even under the weight of fully loaded drill jumbos .
Corrosion Resistance: Zinc-nickel plating offers 1000-hour salt spray resistance (ASTM B117), protecting against moisture, road salts, and mining fluids that cause premature wear .
Anti-Loosen Design: Integral thread lock technology prevents loosening under constant vibration, reducing maintenance checks and downtime .
Performance Advantages
Secure Fastening:
Optimal torque range (45-50 N·m) ensures proper clamping force without over-tightening, preventing thread damage or rim warping .
Precision-machined threads guarantee consistent engagement with wheel nuts, enhancing stability during movement .
Environmental Resilience:
Operates reliably from -40°C (cold underground mines) to +120°C (hot surface drilling), maintaining strength without embrittlement or degradation .
Applications
Rock Drill Jumbos: Used to secure wheel rims on drill rigs, ensuring stable movement in rough mining terrain.
Mining Equipment: Suitable for loaders, haul trucks, and other heavy-duty vehicles requiring durable wheel fasteners.
Industrial Machinery: Ideal for construction equipment with wheeled mobility in abrasive environments.
