TLR Series Telescopic Linear Guides are part of a high capacity telescopic guide family suitable for the toughest industrial applications. The TLR Series is constructed with cold drawn steel rails that are hardened to provide long life even in equipment with highly repetitive motion. The large cam roller wheel will tolerate contaminates better than ball based designs. An innovative rail-wheel (or roller) interface will purge contaminates from the raceways. The rails are treated with the innovative T RACE NOX process to make them resistant to corrosion resistant. For additional corrosion protection we offer the "-KB" version. It includes post E-coating treatment (black color).