Cutting machine for transversely cutting logs of paper material

A machine for transversely cutting logs of paper material, comprising:

• a cutting station in which is arranged a cutting unit comprising an arm rotating about a horizontal axis and on which arm a blade is mounted to perform the transverse cutting of one or more logs of paper material introduced in the machine, the blade having a blade axis, said arm being placed in said cutting station, wherein the logs of paper material follow respective advancement paths, and the blade and the rotating arm are oriented transversely to the paths followed by the logs of paper material, wherein the horizontal axis around which the arm rotates is parallel to and non-coincident with the blade axis, wherein there is arranged a loading station in which a support is provided for supporting a replacement blade for the blade mounted on said arm, and in which said support is connected to a mobile unit, allowing the support to be moved between said cutting and loading stations while the arm is in the cutting station, wherein the support is provided with a blade-holder hub with a respective pin adapted to engage with the cutting unit, and the blade-holder hub is removably connected to the support, wherein the support is positioned in front of the blade mounted on said arm and is rotatable about a vertical rotation axis located forward of the cutting station, such that the support can be rotated about said vertical rotation axis in front of the blade mounted on said arm.