Heavy-Duty Shank Protector for Hydraulic Rock Drills This shank protector is engineered to shield drill shanks from abrasion and impact in hydraulic rock drills, extending tool life in harsh mining environments. Constructed from high-chrome cast iron (ASTM A532 Class III), it combines extreme surface hardness (HRC60-65) with a tough substrate to withstand rock fragments and lateral forces during drilling.
Technical Specifications & Design
Material & Durability:
High-chrome cast iron (25% Cr content) forms a wear-resistant carbide matrix, achieving 10⁵ cycles of reliable performance under standard drilling conditions—3x longer lifespan than manganese steel protectors .
The 5mm thick wear layer (HRC60-65) is induction-hardened to resist gouging, while the ductile substrate absorbs impact loads (20J Charpy test), preventing cracking in dynamic applications .
Precision & Compatibility:
±0.1mm dimensional tolerance (ISO 286-1) ensures a tight fit with R32/R38 drill shanks (ISO 10424-1), minimizing vibration and uneven wear. The integral keyway slot (ISO 13531) simplifies alignment during installation .
Shot-peened surface (Ra 3.2μm) reduces stress concentrations, enhancing fatigue resistance in high-vibration rock drill systems .
Environmental Adaptability:
Operates reliably from -30°C (cold underground mines) to +120°C (high-friction drilling zones), with no degradation in hardness or impact resistance. Its corrosion-resistant composition withstands damp mining conditions without rust-related failure .
Applications
Hydraulic Rock Drills: Protects shanks in horizontal, vertical, and angled 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 using R32/R38 shanks.
