The dryspin® high helix lead screw made of stainless steel in combination with the dryspin® flange nut ensures smooth operation, which allows the collapsible frame to be folded inside the centre column. The centre column is not easy to access for lubrication and the installed igus® products do not require external grease. The following igus® products are currently being tested: DC motor, drylin E motor coupling, dryspin® high helix lead screw nut, dryspin® high helix lead screw made of stainless steel.