From the Army Corps of Engineers – Lignum Vitae Bearings

“The original hydro turbine bearings made of Lignum Vitae, lasted from 1934 to 2001. The Lignum Vitae bearing design kept the hydro turbine in service for sixty-seven years! Modern composite metal bearing materials such as Txxxxxx, Rxxxxx, Mxxxxxx, and Pxxxxxxx are unacceptable materials due to their inability to match the characteristics of Lignum Vitae.”

Superior Bearing  History and Performance. Supply available for world demand!