Excavator Rock Boom and Arm

Excavator Rock Boom and Arm. High-Strength Material: Forearm cut from whole piece high-strength manganese steel, reducing welding and cost. Hollow Reinforced Design: Big arm uses hollow reinforced structure to reduce weight and performance loss. Integrated Oil Circuit: Integrates oil circuits to increase flow rate, strength, and speed without system changes. Thickened Lower Arm: Lower arm plate thickness up to 30cm for severe conditions and extended service life. Easy Maintenance: Simplified structure cancels soil ripper and rotating shaft connecting rod for lower failure rate. OEM/ODM Support: OEM and ODM services available with customization from designs and samples.