High-Flexibility Diaphragm for Hydraulic Rock Drills This diaphragm is engineered to regulate fluid flow in hydraulic rock drill control valves, providing precise pressure response in high-vibration mining environments. Constructed from FKM rubber with nylon fabric reinforcement, it combines exceptional flexibility with resistance to hydraulic fluids and extreme temperatures.
Key Performance Attributes
Material & Durability:
FKM rubber (fluorocarbon elastomer) offers superior resistance to mineral oils, oxidation, and high temperatures compared to standard nitrile rubber. Its 75 Shore A hardness balances flexibility and structural integrity, maintaining sealing contact under dynamic pressure fluctuations .
Nylon fabric reinforcement enhances tear resistance by 40% compared to non-reinforced diaphragms, preventing failure during repetitive flexing (500% elongation capacity per ASTM D412) .
Function & Precision:
The single-layer design provides responsive pressure actuation, critical for controlling flow in rock drill hydraulic circuits. IT10 dimensional tolerance ensures consistent fit in valve assemblies, reducing performance variability across installations .
Operational Reliability:
Rated for 100,000 cycles under standard conditions, it withstands the repetitive motion of valve actuation. The -20°C to +120°C temperature range ensures stability in cold underground mines and high-heat zones near drill motors .
Compatible with common hydraulic fluids (mineral oil, water-glycol), it maintains elasticity and sealing performance even after prolonged exposure to system contaminants .
Applications
Hydraulic Rock Drills: Essential for pressure regulation in control valves, pilot-operated cylinders, and fluid reservoirs.
Mining Equipment: Compatible with tunneling machines, quarry drills, and exploration rigs requiring flexible hydraulic diaphragms.
