Diamond belt sawing machine for vertical and horizontal cuts. The cutting tool consists of a special plastic belt with sintered diamond segments. Only water is used during the cutting phase, both for lubrication and cooling. The system is “ecological”, because no grease or oil are used during the working phase, so that to prevent dust production and grease pollution. The super Jet Belt 950 is electric driven, with electronic control of speed and advance; it can cut up to 3,40 meters depth.