Multiple piece bushing assembly

A bushing assembly comprising:

• an inner bushing orientated about a longitudinal axis;
• said inner bushing having an outwardly-facing frusto-conical surface, an outwardly-facing threaded surface, and an inwardly-facing cylindrical surface adapted to engage a shaft;
• an outer bushing orientated about said longitudinal axis;
• said outer bushing having a first bushing bearing surface orientated in a plane transverse to said longitudinal axis, a second bushing bearing surface orientated in a plane transverse to said longitudinal axis, and an inwardly-facing frusto-conical surface in sliding engagement with said outwardly-facing frusto-conical surface of said inner bushing;
• a nut orientated about said longitudinal axis;
• said nut having an inwardly-facing threaded surface in mating engagement with said outwardly-facing threaded surface of said inner bushing;
• said nut having a first nut bearing surface orientated in a plane transverse to said longitudinal axis and radially overlapping said first bushing bearing surface of said outer bushing;
• and
• said nut having a second nut bearing surface orientated in a plane transverse to said longitudinal axis and radially overlapping said second bushing bearing surface of said outer bushing;
• whereby rotation of said nut about said longitudinal axis in a first rotational direction relative to said inner bushing moves said outer bushing in a first axially direction relative to said inner bushing to operatively tighten said inner bushing around said shaft, and rotation of said nut about said longitudinal axis in a second rotational direction relative to said inner bushing moves said outer bushing in a second axially direction relative to said inner bushing to operatively untighten said inner bushing around said shaft.