Optimal torque range: 45-50 N·m | Integral thread lock for vibration resistance | Compatible with standard wheel nuts
Zinc-nickel plating | 1000-hour salt spray resistance (ASTM B117) | Resistant to road salts and mining fluids

Bolt C011000709 High-Tensile Strength for Rock Drill Jumbos

Part Number: C011000709
  • Performance Specifications:
    • Tensile grade: 10.9
    • Ultimate tensile strength: 1200MPa
    • Yield strength: 900MPa
    • Operating temperature range: -50°C to +150°C
  • Durability:
    • Corrosion resistance: 1000-hour salt spray test (ASTM B117)
    • Torque range: 35-40 N·m
    • Thread type: Metric coarse (ISO metric threads)
  • Design Features:
    • Precision-rolled threads for maximum grip
    • Chamfered end for easy installation
    • Compatible with standard hex nuts
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Heavy-Duty Bolt for Rock Drill Jumbos
Engineered to withstand the extreme forces and harsh environments of rock drill jumbos, this high-tensile bolt delivers reliable performance in critical structural and mechanical connections. Its robust design ensures secure fastening even under high vibration and temperature fluctuations, making it essential for mining and tunneling operations .

 

Technical Specifications & Design
  • Core Performance Traits:
    • High-Tensile Strength: 10.9 grade rating with 1200MPa ultimate tensile strength provides exceptional load-bearing capacity, critical for heavy drill arm components .
    • Corrosion Resistance: Zinc-nickel plating offers 1000-hour salt spray resistance (ASTM B117), protecting against moisture and mineral oils in mining environments .
    • Temperature Versatility: Operates reliably from -50°C (cold underground mines) to +150°C (high-friction areas), maintaining structural integrity without embrittlement .

 

Performance Advantages
  • Secure Fastening:
    • Precision-rolled threads ensure uniform load distribution and resistance to loosening under vibration, reducing maintenance checks .
    • Optimal torque range (35-40 N·m) prevents over-tightening and thread stripping, extending component life .
  • Durability:
    • Compatible with standard hex nuts, ensuring easy replacement and integration with existing rock drill systems .
    • Chamfered end simplifies installation, even in tight spaces common in drill jumbo assemblies .

 

Applications
  • Rock Drill Jumbos: Used in drill arm pivot points, hydraulic cylinder mounts, and structural frame connections.
  • Mining Equipment: Suitable for tunneling machines, blast hole drills, and heavy-duty loaders requiring high-strength fasteners.
  • Industrial Machinery: Ideal for crushers, conveyors, and construction equipment operating in abrasive environments.

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