With the presentation of the RK DuoLine 120 Z at Motek 2011, Rose+Krieger unveils a new timing-belt-driven version of its successful RK DuoLine linear guide product range in size 120. The DuoLine range now offers five different linear units: sizes 160 and 80, available as both a timing-belt and a spindle-driven version, and the new RK DuoLine 120 Z.