Heavy-Duty Drill Rod Guide Sleeve for Rock Drill Jumbos Engineered for extreme mining environments, this guide sleeve ensures precise alignment and protection of drill rods in rock drill jumbos. Constructed from Cr12 alloy steel with 55-60 HRC hardness, it offers superior resistance to abrasion, vibration, and chemical corrosion, making it ideal for heavy-duty underground and surface mining applications .
Technical Specifications & Design
Core Components:
Cr12 Alloy Steel: Compliant with GB/T 1299-1985 standards, providing exceptional hardness and wear resistance in high-stress drilling operations .
Chemical Nitriding: Surface treatment enhances corrosion resistance, passing 1,000-hour salt spray tests under ASTM B117 conditions .
Precision Machining: Tolerances of ±0.05 mm and 0.8μm Ra surface finish minimize friction and prevent drill rod wear during dynamic movements .
Performance Advantages
Vibration Damping: Interlocking groove design reduces drill rod wobble by 30%, extending both component and drill rod lifespan .
Wide Temperature Range: Operates reliably from -20°C to +150°C, suitable for extreme climate conditions in mining.
Low Maintenance: Self-lubricating properties of the nitrided surface eliminate the need for additional lubricants, reducing downtime and maintenance costs.
Applications
Rock Drill Jumbos: Restores alignment efficiency in Sandvik 353E, 352E, and compatible drill rig front support systems .
Mining Equipment: Used in hydraulic drills, blast hole drills, and tunneling machines requiring robust rod guidance.
Construction Machinery: Ideal for excavators and loaders operating in abrasive rock environments.
