★ Two-column machines have a bending angle of 180° with good inertial force balance, and three-column machines have a bending angle of 120°, both allowing for higher rotational speeds;
★ Unbalanced inertial forces act vertically on the foundation, requiring lower foundation requirements;
★ The cylinders are vertically arranged, preventing additional bending stress on the machine body;
★ The vertical distribution of cylinders benefits the design of an oil-free lubrication structure, allowing for oil-free (or low oil) lubrication operation, resulting in even wear of cylinders, piston rings, and packing, extending service life;
★ The structure is compact, occupying a small area, and is easy to transport.


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