· High stability: equipped with new chassis designed for rotary drilling rig and adopt gravity optimization technology to double the machine stability.
· Strong drilling ability: The max. drilling depth is 24m (CFA)/56m (Kelly) and the max. pull force is 640kN which break the record and take the leading position in the international market.
· High efficiency: the originated self-crowding device (CFA) can provide 50kN self-crowding force, which improves the working efficiency when drilling in hard soil and loose pebble layers.
· New multi ratio rotary drive (CFA): adopt multi ratio rotary drive which can increase the lifting force greatly and ensures it is large enough when drilling large hole.
|Main performances||Unit||CFA equipment||Kelly equipment|
|Operating weight(including normal Kelly bar)||t||55||56|
|Max. pile diameter||mm||1,000||1,600|
|Max. pile depth||m||20(Φ1000)/24(Φ800)||55|
|Max. output torque||kN.m||185||185|
|Speed of rotation||rpm||7~30||7~30|
|Line pull(1st layer)||kN||4×160||160|
|Max. line speed||m/min||70||70|
|Line pull(1st layer)||kN||50||50|
|Max. line speed||m/min||60||60|