A wheel balancing apparatus comprising a wheel hub (2) movable by rotation about its own rotation axis (R), the wheel hub (2) being configured to removably engage a wheel and rotate the wheel about the rotation axis (R), and a safety cover (3) comprising at least one active portion (4) movable towards and away from the wheel hub (2) between a distal position and a proximal position. The balancing apparatus comprises a locking system (10) of the safety cover (3).