High-Strength Alloy Steel Bolt for Hydraulic Rock Drills Engineered for extreme underground mining conditions, this bolt ensures reliable performance in high-vibration hydraulic rock drill applications. Constructed from 4340 quenched & tempered alloy steel with 1040 MPa tensile strength, it withstands continuous dynamic loads while resisting abrasion and corrosion in harsh environments .
Technical Specifications & Design The bolt features an M16 x 2.0 mm thread and 50 mm length, adhering to ISO 4014 Class A dimensional tolerances for precision fit in hydraulic cylinder assemblies and drill rig components. Its hot-dip galvanized coating (54 μm thickness) passes 500+ hours of salt spray testing (ISO 9227 standard), ensuring long-term performance in wet or corrosive mining environments . The recommended installation torque of 480 N·m simplifies assembly and reduces downtime .
Performance Advantages
Vibration Resistance: Engineered to maintain dimensional stability in high-frequency oscillating systems, minimizing wear in critical hydraulic connections.
Corrosion Protection: Hot-dip galvanized coating exceeds industry standards, extending service life by 40% compared to standard electroplated coatings .
Precision Fit: Dimensions adhere to ISO 4014 Class A tolerances, ensuring compatibility with standard hydraulic system components.
Ease of Installation: Clear torque specification streamlines maintenance processes.
Applications
Underground Mining: Critical for securing hydraulic connections in rock drills used in tunnel boring and ore extraction.
Heavy Machinery: Used in excavators and loaders to fasten high-pressure hydraulic lines and pivot points.
Industrial Hydraulics: Supports presses and material handling equipment, ensuring structural integrity in repetitive motion tasks.
