Vibration isolator and systems including same

A vibration isolator dimensioned for securement between an associated rotational motion source and an associated rotational motion target with at least one of the associated rotational motion source and the associated rotational motion target being rotatable at an angular speed having a corresponding frequency of vibration, said vibration isolator comprising:

• a first end member having a longitudinal axis and including a shaft wall portion extending axially and a first plate wall portion extending radially outward from along said shaft wall portion toward a first outer peripheral edge;
• a second end member operatively connected to said first end member, said second end member supported in a substantially-fixed axial position relative to said first end member while remaining rotatable relative to said first end member, said second end member including a first central wall portion and a second plate wall portion extending radially outward from along said first central wall portion to a second outer peripheral edge, said first central wall portion axially coextensive with said shaft wall portion of said first end member with said second plate wall portion axially offset from said first plate wall portion;
• an intermediate member disposed between and operatively engaging said first and second end members, said intermediate member axially displaceable relative to said first and second end members while being operatively connected in a substantially fixed rotational orientation relative to said second end member such that said intermediate member and said second end member are co-rotatable about said longitudinal axis relative to said first end member, said intermediate member including a second central wall portion and a third plate wall portion extending radially outward to a third outer peripheral edge with said second central wall portion extending axially coextensively with said shaft wall portion and said first central wall portion and positioned radially between said shaft wall portion and said first central wall portion;
• a rotational-to-axial conversion system including a ball screw drive connection operatively disposed between said intermediate member and said first end member to convert rotation of said intermediate member and said second end member relative to said first end member into axial displacement of said intermediate member relative to said first and second end members;
• and,
• one or more biasing elements operatively disposed between said intermediate member and at least one of said first end member and said second end member to bias said intermediate member in an axial direction toward said first end member, said one or more biasing elements having a spring rate suitable for isolating at least one harmonic of said corresponding frequency of vibration.