Grease free Thorplas for Kaplan runner blade bushings

In April 2005, operators at Alabama Electric Cooperative’s 3-MW Gantt hydroelectric plant on the Conecuh River in Alabama, U.S.A., decided to replace the four runner blade trunnion bushings in the vertical Kaplan turbine of Unit 4. The bushings reduce friction when the runner blade pitch varies according to head and flow.

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