Four columns frames are used in all applications where is necessary guarantee an extreme stiffness and a perfect alignment among press spindle and tools.
The advantage of the use of columns frames is the lack of the lateral bending about structure. This kind of frame is usually utilised in assembling operations or metal forming such us
stamping, pressing, coining and more. Two plates, upper and lower, are made in carbon steel C45 in normalized condition,
the surfaces is grind with a grade of roughness of 0,6. The lateral four columns are made in case hardening steel 18NiCrMo5 and the surface after case hardening and quenching reach
an hardness of 60/62 HRC, further this, four columns are finished by grind and subsequently lapped. The four columns frame own a perfect distribution of thrust load and resist without torsional deformations. The four columns frame is particularly suitable for application that need a wide Working area (bead area).