Compressor with radial compliance mechanism

A compressor assembly comprising:

• an orbiting member and a stationary member, said members being mutually engaged;
• a crankshaft defining a rotational axis and including an eccentric portion disposed asymmetrically relative to said rotational axis, said eccentric portion defining a first set of opposed, generally planar, parallel surfaces spaced apart by a first distance and a second set of opposed, generally planar, parallel surfaces spaced apart by a second distance, said first distance being greater than said second distance, said first set of eccentric surfaces being positioned substantially perpendicular to said second set of eccentric surfaces;
• a roller mounted on said eccentric and operably coupling said crankshaft to said orbiting member wherein rotation of said crankshaft orbits said orbiting member relative to said stationary member;
• said roller having an outer substantially cylindrical surface defining a roller axis, said roller defining a central opening extending axially from a first end of said roller to a second end of said roller, said opening having a first pair of opposed, inwardly facing, generally planar, parallel surfaces and a second pair of opposed, inwardly facing, generally planar, parallel surfaces, said first and second pair of roller surfaces each being spaced apart by a distance approximately equivalent to said first distance whereby said central opening defines a substantially square shape, said first and second ends of said roller having a substantially common configuration and wherein said roller is mountable on said eccentric portion in a plurality of roller orientations, said orientations including a first axial orientation wherein said first end is positioned distally of said second end and a second axial orientation wherein said second end is positioned distally of said first end.