Triaxial labelling machine comprising: - two longitudinal lateral guides (1, 1'); - a transversal carriage movable along said longitudinal lateral guides (1, 1'); - a label applicator movable along a transversal guide, carried by said transversal carriage, and provided with an actuator for moving a pad along a direction perpendicular to said longitudinal (1, 1') and transversal guides; - a first motor fixed on a frame of the labelling machine and provided with a first speed reducer; - a toothed belt driven by said first speed reducer and wound on a first toothed pulley longitudinally aligned with said first speed reducer; and - a control unit operatively connected to control the operation of said first motor and of said actuator for moving said pad; characterized in that the labelling machine further comprises: - a second motor fixed on the labelling machine frame and provided with a second speed reducer; - a second toothed pulley longitudinally aligned with said second speed reducer; and - a pair of deflection rollers (11, 11') longitudinally spaced and preferably aligned, arranged at each end portion of the transversal carriage; and in that said toothed belt extends in a loop being wound in sequence around the first speed reducer, a first front deflection roller adjacent thereto, a second front deflection roller, the second speed reducer, the second toothed pulley, a first rear deflection roller adjacent thereto, a second rear deflection roller, and the first toothed pulley, and in that said label applicator is fixed to the toothed belt in one of the two sections between the deflection rollers (11, 11'), and in that said control unit is operatively connected to said second motor so as to control the simultaneous operation of the two motors (7, 7'). - two longitudinal lateral guides (1, 1'); - a transversal carriage movable along said longitudinal lateral guides (1, 1'); - a label applicator movable along a transversal guide, carried by said transversal carriage, and provided with an actuator for moving a pad along a direction perpendicular to said longitudinal (1, 1') and transversal guides; - a first motor fixed on a frame of the labelling machine and provided with a first speed reducer; - a toothed belt driven by said first speed reducer and wound on a first toothed pulley longitudinally aligned with said first speed reducer; and - a control unit operatively connected to control the operation of said first motor and of said actuator for moving said pad; characterized in that the labelling machine further comprises: - a second motor fixed on the labelling machine frame and provided with a second speed reducer; - a second toothed pulley longitudinally aligned with said second speed reducer; and - a pair of deflection rollers (11, 11') longitudinally spaced and preferably aligned, arranged at each end portion of the transversal carriage; - a second motor fixed on the labelling machine frame and provided with a second speed reducer; - a second toothed pulley longitudinally aligned with said second speed reducer; and - a pair of deflection rollers (11, 11') longitudinally spaced and preferably aligned, arranged at each end portion of the transversal carriage; and in that said toothed belt extends in a loop being wound in sequence around the first speed reducer, a first front deflection roller adjacent thereto, a second front deflection roller, the second speed reducer, the second toothed pulley, a first rear deflection roller adjacent thereto, a second rear deflection roller, and the first toothed pulley, and in that said label applicator is fixed to the toothed belt in one of the two sections between the deflection rollers (11, 11'), and in that said control unit is operatively connected to said second motor so as to control the simultaneous operation of the two motors (7, 7').