High-Strength Side Bolt for Hydraulic Rock Drills This side bolt is engineered to secure structural components in hydraulic rock drills, providing reliable clamping force in high-vibration mining environments. Constructed from 8.8 grade high-tensile steel, it balances tensile strength (800MPa) with ductility, ensuring resistance to loosening under repetitive impact loads.
Key Performance Attributes
Material & Durability:
8.8 grade high-tensile steel (ISO 898-1) offers 800MPa tensile strength and 640MPa yield strength, supporting an 18kN clamping load—suitable for securing side panels, guard rails, and frame brackets .
8μm zinc plating (ASTM B633) provides 72-hour salt spray resistance (ASTM B117), protecting against corrosion in damp underground mines and reducing maintenance requirements .
Design & Precision:
The hexagonal flange head with serrated underhead eliminates the need for washers, while the serrations create a mechanical lock to resist vibration-induced loosening. This design reduces assembly time by 20% compared to standard bolts .
M16x60mm threads (ISO 898-1) with 6g thread fit ensure compatible mating with tapped holes, while IT8 tolerance guarantees consistent fit across production batches .
Operational Reliability:
Rated for 10⁴ fatigue cycles under recommended torque (220Nm), it maintains clamping force in extreme temperatures (-40°C to +120°C). The 24mm wrench size facilitates easy installation with standard tools, simplifying on-site maintenance .
Applications
Hydraulic Rock Drills: Secures side panels, access doors, and structural brackets in drill frames.
Mining Equipment: Compatible with tunneling machines, quarry drills, and exploration rigs requiring high-strength fasteners for lateral load applications.
