FOUR-AXIS MACHINING FOR MAXIMUM PRODUCTIVITY While the basic versions of the VM/VMC series vertical turning centers are already highly-productive machining centers, the systems productivity is significantly increased by the four-axis versions – the VMC 450-4 and the VMC 450-4R with tailstock. With four-axis, the machine is extended by two additional linear axes, X2 and Z2, in the form of a second tool turret. The two tool turrets, enabling four-axis simultaneous machining from both sides, are supported by the powerful main spindle. The main spindle is available in a range of versions and allows for even heavy duty machining processes, ensuring optimal material removal rates which can be almost doubled thanks to four-axis machining. The additional tailstock, installed centrally between the turrets, provides optimal workpiece support, especially for shaft-type parts.