Multiple balancing plugs (114) preferably have a common length and a
common offset center of gravity (130) in the length dimension for
providing dual plane balancing of a rotatable body (100). The rotatable
body (100) includes a plurality of balancing plug holes (112a f) for
receipt of a balancing plug (114) as desired/required to address an
imbalance associated with the rotatable body (100). One or more balancing
plugs (114) may be disposed within the rotatable body (100) in a first
orientation such that their respective centers of gravity (130) are
disposed within a first plane (134). One or more balancing plugs (114)
may be disposed within the rotatable body (100) in a second, opposite
orientation such that their respective centers of gravity (130) are
disposed within a second plane (138) that is spaced from the first plane
(134).