Moving Column Mechanism Linear Guide Model. VMC-4000S It is suitable for heavy-duty machining such as long strip-shaped, pallet, steel, iron, casting etc. ï?? Itâ??s applicable to complex processing needs- milling, cutting and drilling. ï?? Advantages: 1. High rigidity structure equipped with heavy load linear slide to share the load evenly. Lower wear rate, lower lost motion and deformation resistance. 2. The machine is running smoothly and provides better surface finish with high accuracy for long-term operation. 3. The moving column mechanism is a great substitute for double column type machining center is due to space-saving.