Lignum-Vitae North America is based in Powhatan, Virginia. Lignum-Vitae North America produces main guide bearings composed of the wood from the Lignum-Vitae tree that has been used in the hydro industry, as well as others, for over 150 years. Recognized for their durability and longevity, these bearings have been known to last over 60 to 70 years, outlasting competitive bearings six to one. Lignum-Vitae bearings serve turbine diameters of any size, are self-lubricated, water-lubricated, and are the most environmentally responsible bearings in the industry. Lignum-Vitae North America bearings can be used as replacements in all turbine types from all original manufacturers.