According to the direction of the force, there are two types of hydraulic press machines: vertical and horizontal. Most hydraulic presses are vertical and use liquid for extrusion, while structural presses are mostly horizontal. According to the structure type, the hydraulic press has two-column, four-column, eight-column, welded frame and multi-layer steel belt winding frame, etc ., а також середні та невеликі вертикальні гідравлічні преси також використовують тип C-Frame . C-Frame Hydraulic Press відкритий з трьох боків, що легко керувати, але має погану жорсткість .. four-column free forging hydraulic press with upper transmission, the oil cylinder is fixed in the upper beam, the plunger is rigidly connected with the movable beam, and the movable beam is guided by the column and moves up and down under the pressure of the working fluid. There is a workbench that can move back and forth on the beam. The upper anvil and the lower anvil are respectively installed under the movable beam and on the work surface. The working force is borne by the frame composed of upper and lower beams and columns. Large and medium-sized free forging hydraulic presses driven by pump-accumulators often use three working cylinders to obtain three-level working force. A balance cylinder and a return cylinder that exert upward force are also arranged outside the Робочий циліндр .