Drill Guide Sleeve C190000805013 | High-Wear Resistance for Rock Drill Jumbos
C190000805013 Drill Guide Sleeve for Rock Drill Jumbos – 42CrMo4 Alloy, HRC50-55 Hardness, IT7 Precision
42CrMo4 alloy steel | Induction-hardened surface (HRC50-55) | 3-4mm hardened layer depth

Drill Guide Sleeve C190000805013 High-Wear Resistance for Rock Drill Jumbos

Part Number: C190000805013
  • 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:
    • Surface Treatment: 8μm zinc plating (ASTM B633)
    • Interface: ISO 9606-1 compatible for seamless installation
    • Load Capacity: 100N/mm² specific load
  • Performance Metrics:
    • Wear Resistance: 10⁶ cycles under standard drilling conditions
    • Operating Temperature: -20°C to +80°C
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Heavy-Duty Drill Guide Sleeve for Rock Drill Jumbos
This drill guide sleeve is engineered to stabilize drill bits during rock drilling operations, ensuring precise alignment and reducing tool wear in harsh mining environments. Constructed from 42CrMo4 alloy steel with induction hardening, it combines high surface hardness (HRC50-55) for abrasion resistance with a tough core (HRC30-35) to absorb impact loads.

 

Technical Specifications & Design
  • Material & Durability:
    • 42CrMo4 alloy steel provides 1200MPa tensile strength, making it suitable for continuous use with carbide-tipped drill bits. The induction-hardened surface (3-4mm depth) enhances wear resistance, extending service life by 30% compared to standard carbon steel sleeves .
    • 8μm zinc plating (ASTM B633) offers corrosion protection, validated through 72-hour salt spray testing (ASTM B117) to withstand damp underground conditions .
  • Precision & Compatibility:
    • IT7 dimensional tolerance (ISO 286-1) ensures a tight fit with drill bits and guide assemblies, minimizing vibration during drilling. The Ra 0.8μm surface finish reduces friction, preventing bit jamming and improving drilling efficiency .
    • ISO 9606-1 compatible interface allows integration with most rock drill jumbo models, simplifying replacement and maintenance .
  • Performance Under Load:
    • Rated for 100N/mm² specific load, it handles the axial forces generated during hard rock drilling. The operating temperature range (-20°C to +80°C) ensures stability in both cold underground mines and high-friction drilling scenarios .

 

Applications
  • Rock Drill Jumbos: Essential for stabilizing drill bits in horizontal and vertical drilling operations.
  • Mining Equipment: Compatible with tunnel boring machines, quarry drills, and mineral exploration rigs.
  • Construction Machinery: Suitable for foundation drilling and rock excavation equipment.

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