The 5 kn electro-hydraulic servo dynamic and static universal testing machine is mainly composed of main engine (250kN servo linear actuator on top or bottom), open forced hydraulic chuck and its hydraulic driving module, constant pressure servo pump (flow rate 110L / min, system pressure 21MPa), full digital single channel servo controller, computer printer, relevant test software and other necessary accessories.The host machine is four column frame structure,The crossbeam action adopts hydraulic lifting, hydraulic clamping and elastic loosening structure to ensure that the beams are stable and reliable during the test process, while ensuring that the beams remain locked in the non test state.