Abstract: A clamping device for clamping grinding wheels on a driving spindle of a working tool, which includes a rear flange intended to be fitted on the driving spindle in a position proximal to the working tool, wherein the rear flange is provided with a front face with which a first damping element is associated; a front flange intended to be fitted on the driving spindle and provided with a rear face, facing the front face of the rear flange, with which a second damping element is associated; and wherein the front face of the rear flange has a width larger than the rear face of the front flange and the first damping element has a hardness lower than the second damping element.

Abstract: An abrasive grinding wheel (10) that comprises an annular body (20) made of abrasive material provided with a central hole (21) and a reducing ring (30) provided with a central attachment hole (32), wherein the reducing ring (30) is inserted into the central hole (21) so that the attachment hole (32) of the reducing ring (30) is coaxial with respect to the central hole (21) of the annular body (20), wherein the reducing ring (30) comprises two opposing enlarged axial end stretches (311 and 312) configured to axially lock the reducing ring (30) to the central hole (21) of the annular body (20).

Abstract: A flat or center depressed abrasive grinding wheel, comprising an abrasive discoidal element which is associable, substantially coaxially, with the free end of a rotating shaft of a grinder, having at least one substantially central through hole, a first face which can be arranged, in the assembly configuration, so as to be substantially directed toward the grinder and which forms the back of the discoidal element, and a second face, which is opposite to the first face. The discoidal element comprises at least one first layer of a discoidal abrasive mix defined at the first face and at least one second layer of discoidal abrasive mix defined at least one portion of the second face. The first and second layers of abrasive mix are mutually superimposed and jointly associated. The second layer of abrasive mix has an inside diameter that is substantially larger than the diameter of the through hole.

Abstract: A ventilating insert for the substantially coaxial fixing of abrasive tools, such as deburring wheels, cutting wheels, fiber discs, Scotch-Brite® having an abrasive disk-like element, to the free end of a rotating shaft of a grinder, comprising at least one threaded ring for coupling to the free end of the rotating shaft, an annular portion of which is jointly associated with the disk-shaped element, the threaded ring comprising a central threaded hole and being designed to be arranged substantially coaxially with the disk-shaped element and able to be associated with corresponding threaded elements provided on the free end of the rotating shaft. The ventilating insert comprises deflectors for at least one fluid for cooling the disk-like element which are associated with the threaded ring for propelling radially the cooling fluid from the central to the peripheral region of the disk-like element during the rotation thereof.

Abstract: A flat or center depressed abrasive grinding wheel, comprising an abrasive discoidal element which is associable, substantially coaxially, with the free end of a rotating shaft of a grinder, having at least one substantially central through hole, a first face which can be arranged, in the assembly configuration, so as to be substantially directed toward the grinder and which forms the back of the discoidal element, and a second face, which is opposite to the first face. The discoidal element comprises at least one first layer of a discoidal abrasive mix defined at the first face and at least one second layer of discoidal abrasive mix defined at least one portion of the second face. The first and second layers of abrasive mix are mutually superimposed and jointly associated. The second layer of abrasive mix has an inside diameter that is substantially larger than the diameter of the through hole.

Abstract: A package (1, 11) for abrasive grinding wheels that includes a cover (3) and a base (4) adapted to close, seal and insulate the grinding wheels from atmospheric agents, cover (3) and base (4) being made of insulating material from atmospheric agents, for example plastic material. Between base (4) and cover (3), it is possible to interpose a cylindrical body (7) made of cardboard or plastic or plasticized cardboard; the plasticizing being only internal, only external or on both surfaces. The base (4) can comprise a cylindrical mantle (4b) defining a space where grinding wheels can be inserted.

Abstract: The present invention relates to an improved cutting wheel, comprising a disk-shaped abrasive body having two opposite faces and a non-uniform thickness.

Abstract: The present invention refers to an improved grinding wheel, comprising an abrasive and/or cutting disk-shaped member that can be associated substantially coaxially with the free end of the rotating shaft of a grinding machine and equipped with at least one substantially central through-hole, with a first face that can be placed, in its assembling configuration, substantially oriented towards the machine and in contact with a machine bearing flange, and with a second face opposite to the first face, that comprises at least one threaded ring nut for attaching to the free end of the rotating shaft that is associated integral and unmovable with the substantially central portion of the second face.

Abstract: A package (1, 11) for abrasive grinding wheels that includes a cover (3) and a base (4) adapted to close, seal and insulate the grinding wheels from atmospheric agents, cover (3) and base (4) being made of insulating material from atmospheric agents, for example plastic material. Between base (4) and cover (3), it is possible to interpose a cylindrical body (7) made of cardboard or plastic or plasticized cardboard; the plasticizing being only internal, only external or on both surfaces. The base (4) can comprise a cylindrical mantle (4b) defining a space where grinding wheels can be inserted.

Abstract: The present invention relates to an improved cutting wheel, comprising a disk-shaped abrasive body having two opposite faces and a non-uniform thickness.