The What, Why and How of 5Axis CNC Machining
#0183;#32;The A, B and C axes are ordered alphabetically to correspond with the X, Y and Z axes. Although there are 6axis CNC machines, such as Zimmermanns FZ 100 Portal milling machine, 5axis configurations are more common, since adding a sixth axis typically offers few additional benefits.. One last note about axislabeling conventions: in a vertical machining center, the X and Yaxes