A sensorized bearing-supporting device which comprises: - a bearing housing, configured for being secured to a mounting structure and defining at least one seat for a bearing; and - a sensorized supporting base, having a supporting body prearranged for being at least partially positioned between the mounting structure and the bearing housing, directly or via interposition of at least one further element (7; 7'), wherein the supporting body has a detection surface which extends in a longitudinal direction and a transverse direction and is configured for resting, directly or via interposition of at least one further element (7; 7'), on a corresponding surface (6a; Sa) of one of the bearing housing and the mounting structure, the sensorized supporting base being provided with mechanical-stress sensor means, characterized in that the mechanical-stress sensor means comprise at least one piezoelectric transducer (10; 20; 10 1, 10 2) defining at least part of the detection surface, the at least one piezoelectric transducer (10; 20; 10 1, 10 2) being configured for generating an electrical potential difference that is substantially proportional to the magnitude of a mechanical stress applied to the bearing housing, and in that the at least one piezoelectric transducer (10; 20; 10 1, 10 2) comprises at least one of: - a first piezoelectric transducer configured for generating a first electrical potential difference representing a first shear stress in a first direction, and a second piezoelectric transducer (10 2) configured for generating a second potential difference representing a second shear stress in a second direction, the first direction and the second direction being generally transverse with respect to one another, - at least one shear-stress piezoelectric transducer (10; 10i, 10 2) configured for generating an electrical potential difference substantially proportional to a shear stress applied to the bearing housing, and a normal-stress piezoelectric transducer configured for generating an electrical potential difference substantially proportional to a normal stress applied to the bearing housing. - a bearing housing, configured for being secured to a mounting structure and defining at least one seat for a bearing; and - a sensorized supporting base, having a supporting body prearranged for being at least partially positioned between the mounting structure and the bearing housing, directly or via interposition of at least one further element (7; 7'), wherein the supporting body has a detection surface which extends in a longitudinal direction and a transverse direction and is configured for resting, directly or via interposition of at least one further element (7; 7'), on a corresponding surface (6a; Sa) of one of the bearing housing and the mounting structure, the sensorized supporting base being provided with mechanical-stress sensor means, characterized in that the mechanical-stress sensor means comprise at least one piezoelectric transducer (10; 20; 10 1, 10 2) defining at least part of the detection surface, the at least one piezoelectric transducer (10; 20; 10 1, 10 2) being configured for generating an electrical potential difference that is substantially proportional to the magnitude of a mechanical stress applied to the bearing housing, and in that the at least one piezoelectric transducer (10; 20; 10 1, 10 2) comprises at least one of: - a first piezoelectric transducer configured for generating a first electrical potential difference representing a first shear stress in a first direction, and a second piezoelectric transducer (10 2) configured for generating a second potential difference representing a second shear stress in a second direction, the first direction and the second direction being generally transverse with respect to one another, - at least one shear-stress piezoelectric transducer (10; 10i, 10 2) configured for generating an electrical potential difference substantially proportional to a shear stress applied to the bearing housing, and a normal-stress piezoelectric transducer configured for generating an electrical potential difference substantially proportional to a normal stress applied to the bearing housing. - a first piezoelectric transducer configured for generating a first electrical potential difference representing a first shear stress in a first direction, and a second piezoelectric transducer (10 2) configured for generating a second potential difference representing a second shear stress in a second direction, the first direction and the second direction being generally transverse with respect to one another, - at least one shear-stress piezoelectric transducer (10; 10i, 10 2) configured for generating an electrical potential difference substantially proportional to a shear stress applied to the bearing housing, and a normal-stress piezoelectric transducer configured for generating an electrical potential difference substantially proportional to a normal stress applied to the bearing housing.