Digging equipment for an operating machine comprising: - a coupling portion to couple the digging equipment to the operating machine; - an equipment body comprising a pair of abutment runners suitable to abut against a working surface; - a digging tool which is mounted on an inner frame and supported by said inner frame, the inner frame being movable with respect to an outer frame, said inner frame and said outer frame forming said equipment body, said digging tool being mounted in a movable manner around a rotation axis, projecting partially downwardly of the abutment runners, i.e. in operation below the outer frame or equipment body, and peripherally comprising a plurality of excavation elements; - adjustment means of the excavation depth (Q1, Q2) of said digging equipment, functionally connected to the equipment body and to the digging tool to adjust a relative distance between the abutment runners and the excavation elements; - articulation means, mechanically interposed between the coupling portion and the digging tool to allow the rotation axis to move about a tilting axis, intersecting or orthogonal with respect to the rotation axis; characterized in that said articulation means comprises a rotation fulcrum between the coupling portion and the equipment body; and wherein the articulation means comprises at least two pairs of sliding surfaces (22, 24), said at least two pairs of sliding surfaces (22, 24) being delimited by the coupling portion and by the equipment body, said at least two pairs of sliding surfaces (22, 24) being radially spaced with respect to the tilting axis to guide the tilting movement; - each pair of sliding surfaces of said at least two pairs of sliding surfaces (22, 24) being in mutual contact to accompany the tilting movement of the equipment body; - said at least two pairs of sliding surfaces (22, 24) comprise a pair of internal sliding surfaces and a pair of external sliding surfaces, the pair of external sliding surfaces being radially offset with respect to the internal sliding surfaces, said pair of internal sliding surfaces and said pair of external sliding surfaces developing in sliding planes (P1, P2) substantially orthogonal to the tilting axis, said planes (P1, P2) being axially spaced with respect to said axis, and wherein the pair of external sliding surfaces outstrip the pair of internal sliding surfaces in a working direction of the excavation equipment. - a coupling portion to couple the digging equipment to the operating machine; - an equipment body comprising a pair of abutment runners suitable to abut against a working surface; - a digging tool which is mounted on an inner frame and supported by said inner frame, the inner frame being movable with respect to an outer frame, said inner frame and said outer frame forming said equipment body, said digging tool being mounted in a movable manner around a rotation axis, projecting partially downwardly of the abutment runners, i.e. in operation below the outer frame or equipment body, and peripherally comprising a plurality of excavation elements; - adjustment means of the excavation depth (Q1, Q2) of said digging equipment, functionally connected to the equipment body and to the digging tool to adjust a relative distance between the abutment runners and the excavation elements; - articulation means, mechanically interposed between the coupling portion and the digging tool to allow the rotation axis to move about a tilting axis, intersecting or orthogonal with respect to the rotation axis; characterized in that said articulation means comprises a rotation fulcrum between the coupling portion and the equipment body; and wherein the articulation means comprises at least two pairs of sliding surfaces (22, 24), said at least two pairs of sliding surfaces (22, 24) being delimited by the coupling portion and by the equipment body, said at least two pairs of sliding surfaces (22, 24) being radially spaced with respect to the tilting axis to guide the tilting movement; - each pair of sliding surfaces of said at least two pairs of sliding surfaces (22, 24) being in mutual contact to accompany the tilting movement of the equipment body; - said at least two pairs of sliding surfaces (22, 24) comprise a pair of internal sliding surfaces and a pair of external sliding surfaces, the pair of external sliding surfaces being radially offset with respect to the internal sliding surfaces, said pair of internal sliding surfaces and said pair of external sliding surfaces developing in sliding planes (P1, P2) substantially orthogonal to the tilting axis, said planes (P1, P2) being axially spaced with respect to said axis, and wherein - each pair of sliding surfaces of said at least two pairs of sliding surfaces (22, 24) being in mutual contact to accompany the tilting movement of the equipment body; - said at least two pairs of sliding surfaces (22, 24) comprise a pair of internal sliding surfaces and a pair of external sliding surfaces, the pair of external sliding surfaces being radially offset with respect to the internal sliding surfaces, said pair of internal sliding surfaces and said pair of external sliding surfaces developing in sliding planes (P1, P2) substantially orthogonal to the tilting axis, said planes (P1, P2) being axially spaced with respect to said axis, and wherein the pair of external sliding surfaces outstrip the pair of internal sliding surfaces in a working direction of the excavation equipment.