High-Durability Bronze Bushing for Hydraulic Rock Drills Engineered for extreme underground mining conditions, this bushing ensures reliable performance in high-vibration hydraulic rock drill applications. Constructed from SAE 660 bronze (83% copper, 7% lead, 3% zinc), it withstands continuous dynamic loads up to 15 kN while resisting wear and corrosion in abrasive environments .
Technical Specifications & Design The bushing features a 30 mm inner diameter (ISO 4385 tolerance) and 45 mm outer diameter, designed for secure mounting in hydraulic cylinder assemblies and drill rig components. Its quenched & tempered finish (70 HB hardness) enhances resistance to fatigue failure under repetitive impact loads . The zinc-plated surface provides 240+ hours of salt spray protection, ensuring longevity in mineral oil and moisture-rich environments .
Performance Advantages
Vibration Resistance: Precision-machined inner surface reduces friction by 20% compared to plain steel, minimizing energy loss in high-speed rotating systems.
Temperature Stability: Operates reliably from -40°C to 150°C, suitable for both cold climates and high-heat drilling environments.
Longevity: SAE 660 bronze material and zinc plating extend service life by 30% compared to standard carbon steel bushings.
Applications
Underground Mining: Critical for supporting rotating shafts in hydraulic rock drills used in tunnel boring and ore extraction.
Heavy Machinery: Used in excavators and loaders to reduce wear in high-pressure hydraulic systems.
Industrial Hydraulics: Supports presses and material handling equipment, ensuring smooth operation in repetitive motion tasks.
