A conveyor belt movable along a predetermined feeding direction in a conveying line, the conveyor belt comprising: - a plurality of modular elements (12A, 12B, 12C) arranged in sequence and articulated between each other; - at least one connecting pin, which forms part of the articulation system of the conveyor belt; and - at least one locking ball, wherein each modular element (12A, 12B, 12C) comprises in turn: - a respective intermediate portion, which extends along a transversal axis substantially perpendicular to said feeding direction and which is provided with an upper support surface for the objects to be conveyed; - a front side, a rear side, a first lateral side, and a second lateral side of each intermediate portion; - a first plurality of projections, which extend along said feeding direction on the front side of each intermediate portion and which are provided with a first plurality of respective through holes aligned along a single axis substantially parallel to said transversal axis; and - a second plurality of projections, which extend along said feeding direction, but with an opposite direction with respect to the first plurality of projections, on the rear side of each intermediate portion and which are provided with a second plurality of respective through holes aligned along a single axis substantially parallel to said transversal axis, wherein the first plurality of projections and the second plurality of projections have mating profiles, so that the first projections of a first modular element can be interpenetrated with the second projections of an adjacent modular element, and the first through holes of the first modular element are arranged along the same axis of the second through holes of the adjacent modular element, so as to allow the introduction of the connecting pin to form a rotoidal joint between said two modular elements (12A, 12B), and wherein the through hole of at least one of the first plurality of projections or the second plurality of projections placed on a first lateral side of each intermediate portion is provided with an internal portion which comprises a seat with enlarged cross-section with respect to the remaining part of said through hole, the conveyor belt being characterized in that said at last one locking ball has a diameter that is greater than the cross-section of the connecting pin and is made as a separate component with respect to said connecting pin, said seat being shaped for pressure or snap insertion of said at least one locking ball. - a plurality of modular elements (12A, 12B, 12C) arranged in sequence and articulated between each other; - at least one connecting pin, which forms part of the articulation system of the conveyor belt; and - at least one locking ball, - a respective intermediate portion, which extends along a transversal axis substantially perpendicular to said feeding direction and which is provided with an upper support surface for the objects to be conveyed; - a front side, a rear side, a first lateral side, and a second lateral side of each intermediate portion; - a first plurality of projections, which extend along said feeding direction on the front side of each intermediate portion and which are provided with a first plurality of respective through holes aligned along a single axis substantially parallel to said transversal axis; and - a second plurality of projections, which extend along said feeding direction, but with an opposite direction with respect to the first plurality of projections, on the rear side of each intermediate portion and which are provided with a second plurality of respective through holes aligned along a single axis substantially parallel to said transversal axis,