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Horn’s DG modular interchangeable head milling system is said to optimize the interface between the cutting head and shank for greater versatility, stability and higher changeover precision. According to Horn, this is made possible by the solid carbide monoblock design of the replaceable head. It means that the interface and the desired cutting-edge shape are precision ground from a carbide blank. The system achieves high precision through a guide pin, a precision trapezoidal thread and a taper/flat contact. The changeover accuracy is in the µ range. This reduces setup times and cuts production costs. The modular design enables quick changeover to a different cutting insert and the use of customized special solutions.

Horn stocks the milling system as standard in diameters of 10 mm (0.394"), 12 mm (0.472"), 16 mm (0.630"), 20 mm (0.787") and 25 mm (0.984"). In addition, numerous cutting edge shapes for the most common machining tasks are available from stock. The user can choose an interchangeable head with a cutting-edge length of either 0.5 × D or 1 × D. The cutter shanks are available in solid carbide and steel versions. All types have an internal coolant supply. For economical and productive machining of material groups P and K, Horn offers the new grade RC4P.