1,for coal mining,ore exploration, 2,in construction drilling of ... max(KN)37Lifting speed( m/s)0.6 2.3 3.4Lifting capacity(single) max( ... , port, bridge, water conservancy and hydropower, tunnel, well, industrial and civil construction2. Coal mining exploration, Ore exploration3. Small hole ... complete hydraulic chuck and vertical spindle.4) Convenient to transport with the small volume and light weight.5 ...