Part No.: 55043533 Name: Feed Drive Line / Hydraulic Hose Assembly Brand: Sand-vik Application: DD series (DD421/DD422i) and DL series underground & surface rock drills, compatible with TF/TFX500 feed systems. Function: High-pressure pipeline for feed cylinders. It conveys hydraulic oil to control drill feed movement and delivers a maximum stable feed force of 25 kN. Structure: Rubber hose reinforced with double steel wire braids, fitted with original Sand-vik metal couplings. Weight: Approx. 2.5 kg

Working Pressure: 315 bar Burst Pressure: ≥ 945 bar Applicable Medium: Anti-wear hydraulic oil (ISO VG 46/68) Temperature Range: −30 ℃ ~ +120 ℃ Reinforcement Layer: Double steel wire braid Features: Oil resistance, abrasion resistance and anti-aging performance. Designed for harsh mining environments with heavy dust and strong vibration.

Pre-installation Inspection: Check for cracks, bulges, aging and oil leakage. Installation Requirements: Avoid sharp bends and friction against metal components. Fasten couplings with proper torque to prevent loosening and leakage. Maintenance Cycle: Mandatory replacement every 12 months. Replace immediately if bulging, oil leakage or outer layer peeling occurs. Common Faults: Oil leakage at couplings, hose bulging, outer layer wear, aging and cracking.