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Industrial Grade High Efficiency Rock Breaking Jumbo for Rock Excavation. Dual Voltage Operation: Supports 380V/660V for versatile industrial power environments. Adjustable Impact Energy: Graded energy from 2000J to 3650J covers various rock hardness. OEM & ODM Customization: Supports custom logo, design, and specific model configurations. Fast Stock Delivery: Standard machines ship in 5 days; 2 units in 7 days. Stable Hydraulic Drive: Full hydraulic system ensures reliable power and overload protection. Compact Tunnel Design: Fits narrow tunnels with dimensions as low as 2.1m width.