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 high-intensity mining 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, critical for reliability in abrasive drilling environments.
Key Performance Attributes
Material & Durability:
42CrMo4 alloy steel achieves 1100MPa tensile strength, making it suitable for 180kN axial thrust applications—30% higher load capacity than standard carbon steel components. The induction-hardened surface (3.5mm depth) resists galling and wear, extending service life by 50% in field tests .
IT7 dimensional tolerance (ISO 286-1) ensures a tight fit with R38 drill shanks (ISO 10424-1), minimizing vibration-induced wear. The Ra 0.8μm surface finish reduces friction between mating components, preventing premature failure in high-speed operations .
Operational Reliability:
Rated for 1.2×10⁶ fatigue cycles under rated load (ISO 12044), it handles repetitive thrust forces from rock drill impact mechanisms. The -30°C to +100°C operating range ensures performance stability in cold mines and high-friction drilling zones .
Applications
Hydraulic Rock Drills: Critical for absorbing axial loads in R38 drill shank systems during rotary and impact drilling.
Mining Equipment: Compatible with tunnel boring machines, quarry drills, and mineral exploration rigs requiring high-load thrust components.
