High-Strength Input Flange for Rock Drill Jumbos This heavy-duty input flange is engineered to deliver exceptional durability and sealing performance in extreme mining environments. Constructed from GGG40 ductile iron with induction hardening treatment, it achieves HB 190-230 hardness and 400MPa tensile strength, ensuring reliable operation under high-stress conditions.
Technical Specifications & Design
Material & Heat Treatment:
GGG40 ductile iron (EN 1563) provides excellent impact resistance and wear resistance, ideal for hydraulic system connections in rock drilling applications.
Induction hardening process creates a 5mm hardened layer depth, significantly extending service life compared to standard steel flanges.
Precision Machining:
IT7 dimensional tolerance (ISO 286-1) ensures seamless fit with mating components, reducing vibration and noise during operation.
Ra 1.6μm surface finish minimizes friction and enhances lubricant retention, critical for maintaining smooth hydraulic flow.
Sealing & Corrosion Resistance:
Viton O-ring (ISO 3601-1) offers superior resistance to hydraulic oils and extreme temperatures (-20°C to +120°C), ensuring leak-free performance at up to 35MPa working pressure.
Zinc-plated surface treatment (8μm thickness) provides long-term protection against rust and corrosion in wet or abrasive environments.
Applications
Rock Drill Jumbos: Powers hydraulic connections in drill feed systems, boom articulation joints, and telescopic arm mechanisms.
Mining Machinery: Compatible with loaders, crushers, and tunneling equipment requiring high-wear input flanges.
Industrial Hydraulics: Ideal for heavy-duty drives in steel mills, quarries, and construction machinery.
