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Shank Thrust 86334125 | High-Load Resistance for Hydraulic Rock Drills
150kN axial load capacity | 10⁶ cycle fatigue life (ISO 12044) | 1100MPa tensile strength
IT7 dimensional tolerance (ISO 286-1) | Ra 0.8μm surface finish | ±0.03mm parallelism
42CrMo4 alloy steel | Induction-hardened (3mm depth) | HRC50-55 surface, HRC30-35 cor
Montabert 86334125 Shank Thrust for Hydraulic Rock Drills – 42CrMo4 Alloy, 150kN Load, HRC50-55 Hardness

Shank Thrust 86334125 | High-Load Resistance for Hydraulic Rock Drills

Part Number: 86334125
  • 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: 1100MPa
  • Design Features:
    • Compatibility: R32 drill shanks (ISO 10424-1)
    • Surface Treatment: 8μm zinc plating (ASTM B633)
    • Load Capacity: 150kN axial thrust
  • Performance Metrics:
    • Fatigue Life: 10⁶ cycles under rated load (ISO 12044)
    • Operating Temperature: -30°C to +100°C
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Heavy-Duty Shank Thrust for Hydraulic Rock Drills
This shank thrust component is engineered to absorb axial loads in hydraulic rock drills, ensuring stable force transmission during drilling operations. Constructed from 42CrMo4 alloy steel with induction hardening, it combines high surface hardness (HRC50-55) for wear resistance with a tough core (HRC30-35) to withstand impact loads in abrasive mining environments.


Technical Performance
  • Material & Durability:
    • 42CrMo4 alloy steel achieves 1100MPa tensile strength, making it suitable for 150kN axial thrust applications. The induction-hardened surface (3mm depth) resists galling and wear, extending service life by 50% compared to untreated steel components .
    • 8μm zinc plating (ASTM B633) provides 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 R32 drill shanks (ISO 10424-1), minimizing backlash and vibration during high-speed drilling. The Ra 0.8μm surface finish reduces friction between mating components, preventing premature wear .
  • Operational Reliability:
    • Rated for 10⁶ fatigue cycles under rated load (ISO 12044), it handles repetitive thrust forces generated by rock drill impact mechanisms. The operating temperature range (-30°C to +100°C) maintains performance stability in both cold mines and high-friction drilling zones .


Applications
  • Hydraulic Rock Drills: Critical for absorbing axial loads in drill shank systems during rotary and impact drilling.
  • Mining Equipment: Compatible with tunnel boring machines, quarry drills, and mineral exploration rigs using R32 shanks.

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