Pin Assembly C190001137 | High-Strength for Rock Drill Jumbos
Pin Assembly C190001137 | High-Strength for Rock Drill Jumbos - Image 2
Pin Assembly C190001137 | High-Strength for Rock Drill Jumbos - Image 3

Pin Assembly C190001137 | High-Strength for Rock Drill Jumbos

Part Number: C190001137
  • Technical Specifications:
    • Material: 42CrMo4 alloy steel (EN 10083-3) with induction hardening
    • Hardness: HRC50-55 (surface); HRC30-35 (core)
    • Precision: IT7 dimensional tolerance (ISO 286-1)
    • Tensile Strength: 1200MPa
  • Design Features:
    • Torque Capacity: 7000N·m (continuous operation)
    • Surface Treatment: 8μm zinc plating (ASTM B633)
    • Bearings: Sealed ball bearings (IP67 rated)
  • Performance Metrics:
    • Fatigue Life: 10⁶ cycles under rated load (ISO 12044)
    • Operating Temperature: -30°C to +100°C
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Heavy-Duty Pin Assembly for Rock Drill Jumbos
This pin assembly is engineered to connect and secure moving components in rock drill jumbo systems, delivering reliable torque transmission and load-bearing performance in harsh mining environments. Its integrated design combines high-strength pins, sealed bearings, and corrosion-resistant coatings to minimize maintenance and maximize equipment uptime.

 

Technical Specifications & Design
  • Material & Durability:
    • Constructed from 42CrMo4 alloy steel, with induction-hardened pin surfaces (3-4mm depth) for HRC50-55 wear resistance and a tough core (HRC30-35) to absorb impact loads. This material achieves 1200MPa tensile strength, suitable for heavy-duty pivot applications .
    • 8μm zinc plating provides 72-hour salt spray resistance (ASTM B117), protecting against corrosion in damp underground mines and extending service life by 35% compared to uncoated assemblies .
  • Precision & Integration:
    • IT7 dimensional tolerance (ISO 286-1) ensures alignment between pins and bushings, reducing friction and vibration in pivot joints. Sealed ball bearings (IP67 rated) prevent contamination by dust and debris, maintaining smooth operation in abrasive conditions .
    • ISO 8752 compatible mounting holes enable seamless integration with standard rock drill jumbo frames, simplifying installation and replacement .
  • Performance Under Load:
    • Rated for 7000N·m continuous torque, it handles the rotational forces generated during drill arm movement and equipment articulation. The 10⁶ cycle fatigue life (ISO 12044) ensures durability in repetitive motion applications .
    • Operating temperature range (-30°C to +100°C) maintains performance stability in both cold underground mines and high-friction mechanical systems .

 

Applications
  • Rock Drill Jumbos: Secures pivot joints in drill arms, boom extensions, and hydraulic cylinder mounts.
  • Mining Equipment: Compatible with loaders, crushers, and tunneling machines requiring heavy-duty articulated connections.
  • Industrial Machinery: Suitable for material handling systems, conveyor pivots, and heavy-duty linkages.

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