Okuma | Vertical vs. Horizontal Machining Centers
Surveys done by American Machinist and the University of Michigan have demonstrated that the average spindle utilization of a horizontal machining center (HMC) is 85%, while the average for a vertical machining center (VMC) is 25%. Translated to an 8hour shift, this means the HMC cuts for hours while the VMC cuts for merely 2 hours.