Experience with bearings and vibration conditions of large hydroelectric units

IN 1905 there was installed at Snoqualmie Falls, a 9000-h. p. single-runner, single-discharge Francis turbine. The end thrust of this runner gave considerable trouble, since the balancing of the run in a turbine of this type had not been perfected at that time. This experience determined that any future horizontal hydraulic turbine should be of the single-runner, double-discharge type unless a satisfactory solution was found for balancing the runner in a single-discharge turbine.