Motor-Hydraulic Timber Grab has hydraulic power and control system itself, and the hydraulic power system is imported from Europe and USA. The grab uses constant output pump and servo system. The flow of pump can change by itself according to working pressure. When the pressure reaches the max pressure, the flow is almost zero, so it can reduce the overflow, and reduce the temperature rise of oil. The hydraulic system has self-lock function, which can ensure the grab never open by itself even the hydraulic system has problem. The grab has 4 peels, and each peel is driven by an oil cylinder. The peels are specially designed, which can prevent the wood surface from damage. The grab has tie-in on the grab and it is easy to connect to the crane.