Three decades ago, igus® presented its fi rst iglidur® polymer plain bearing – a lubricant-free and maintenance- free plastic plain bearing for dry-running applications. Thanks to decades of research with the plastic material and its tribological – optimised for friction and wear behaviour – properties, igus® now has the world‘s largest range of tribo-optimised plain, spherical and linear bearings made of plastic and provides a reliable service life calculation via the Internet.