2924100200 Hinge Pin for Rock Drill Jumbos – 42CrMo4 Alloy, 55-57HRC Surface Hardness, IT6 Precision
42CrMo4 alloy steel | Induction-hardened (55-57HRC) | 5mm hardened layer depth (3-3.5kHz frequency)
IT6 precision machining | ±0.01mm dimensional tolerance (ISO 286-1) | Ra 0.8μm surface finish

Hinge Pin 2924100200 | High-Strength for Rock Drill Jumbos

Part Number: 2924100200
  • Technical Specifications:
    • Material: 42CrMo4 alloy steel with induction hardening treatment (EN 10083-3)
    • Surface Hardness: 55-57HRC (5mm hardened layer depth)
    • Precision: IT6 dimensional tolerance (ISO 286-1)
    • Tensile Strength: 1200MPa
  • Design Features:
    • Load Capacity: 80N/mm² specific load capacity
    • Surface Finish: Ra 0.8μm (grinding process)
    • Sealing: Nitrile rubber O-ring (ISO 3601-1)
  • Performance Metrics:
    • Wear Resistance: 10⁶ cycles under 80N/mm² load
    • Operating Temperature: -20°C to +80°C
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High-Strength Hinge Pin for Rock Drill Jumbos
This heavy-duty hinge pin is engineered to deliver exceptional wear resistance and load-bearing capacity in extreme mining environments. Constructed from 42CrMo4 alloy steel with induction hardening treatment, it achieves 55-57HRC surface hardness and 5mm hardened layer depth, ensuring 10⁶ cycles of reliable operation under high-stress conditions.

 

Technical Specifications & Design

 

  • Material & Heat Treatment:
    • 42CrMo4 alloy steel (EN 10083-3) provides 1200MPa tensile strength and excellent toughness, ideal for resisting impact loads in rock drilling applications.
    • Induction hardening process (3-3.5kHz frequency) creates a wear-resistant surface layer with 55-57HRC hardness, significantly extending service life compared to standard steel pins.
  • Precision Machining:
    • IT6 dimensional tolerance (ISO 286-1) ensures seamless fit with mating components, reducing vibration and noise during operation.
    • Ra 0.8μm surface finish minimizes friction and enhances lubricant retention, critical for maintaining smooth motion in abrasive environments.
  • Load & Environmental Performance:
    • 80N/mm² specific load capacity supports continuous operation under heavy radial and axial forces.
    • Operates reliably from -20°C to +80°C with 95% humidity resistance, suitable for both underground mines and outdoor construction sites.

 

Applications

 

  • Rock Drill Jumbos: Powers hinge connections in drill feed systems, boom articulation joints, and telescopic arm mechanisms.
  • Mining Machinery: Compatible with loaders, crushers, and tunneling equipment requiring high-wear hinge pins.
  • Industrial Equipment: Ideal for heavy-duty drives in steel mills, quarries, and construction machinery.

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