Variable displacement compressor with stepped shaft

A variable displacement compressor comprising;

• a housing;
• a shaft supported within said housing for rotational movement about an axis, said shaft including a pair of steps defining a reduced diameter portion along said shaft;
• a pin extending generally outward from said shaft and including a distal end, one of said steps being formed within said shaft adjacent said pin on each side of said pin;
• a sleeve mounted about said shaft, said sleeve being slidable along said shaft and rotatable with said shaft, said sleeve extending over at least one of said steps and defining a radial gap between said sleeve and said reduced diameter portion of said shaft;
• a swash-ring supported on said sleeve and rotatable with said shaft, said swash-ring being pivotably coupled to said distal end of said pin, said swash-ring further defining an angle with said axis, said angle being adjustable with respect to said axis;
• a piston supported within said housing, said piston being coupled to said swash-ring whereby rotation of said swash-ring causes reciprocating axial movement of said piston;
• and
• a biasing member engaging said sleeve and biasing said sleeve along said shaft.