US Patent 9353643 Variable stator vane assembly for a turbine engine

A stator assembly for a turbine engine includes a support structure, such as an outer case, providing a bore. A non-metallic bushing is arranged in the bore and extends radially between inner and outer diameters providing a one-piece structure. The outer diameter of the bushing engages the bore in a press-fit relationship, in one example. A stator includes a trunnion arranged within and engaging the bushing inner diameter. In one example, the non-metallic bushing is constructed from an electrographitic carbon. The bushing is installed into the bore such that an end of the bushing is generally flush with or recessed from a wall on the support structure.