C190000805027 Spacer for Rock Drill Jumbos – 42CrMo4 Alloy, HRC50-55 Surface Hardness, IT6 Precision
42CrMo4 alloy steel | Induction-hardened surface (HRC50-55) | 3-4mm hardened layer depth

Spacer C190000805027 High-Wear Resistance for Rock Drill Jumbos

Part Number: C190000805027
  • Technical Specifications:
    • Material: 42CrMo4 alloy steel with induction hardening treatment
    • Surface Hardness: HRC50-55 (3-4mm hardened layer depth)
    • Precision: IT6 dimensional tolerance (ISO 286-1)
    • Tensile Strength: 1200MPa
  • Design Features:
    • Load Capacity: 100N/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 100N/mm² load
    • Operating Temperature: -20°C to +80°C
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High-Performance Spacer for Rock Drill Jumbos
This heavy-duty spacer 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 HRC50-55 surface hardness and 3-4mm 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 creates a wear-resistant surface layer with HRC50-55 hardness, significantly extending service life compared to standard steel spacers .
  • 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:
    • 100N/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 drill feed systems, boom articulation joints, and conveyor mechanisms.
  • Mining Machinery: Compatible with loaders, crushers, and tunneling equipment requiring high-wear spacers.
  • Industrial Equipment: Ideal for heavy-duty drives in steel mills, quarries, and construction machinery.

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