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Engineered for
        MAXIMUM
          MULTI-MASTER

              Performance

















































                Interchangeable Ball Nose Milling Heads



                The MULTI-MASTER family offers a wide range     MM H… ball nose heads are called “economy”,
                of ball nose milling heads with various dimensions,   but not due to lesser accuracy. On the contrary,
                shapes and accuracy. The heads combined with    high-precision MM HBR… and MM HRF… heads
                shanks, extensions and reducers allow for assembly   have very closed diameter tolerances (h7).
                of numerous ball nose endmill cutters that meet   The MULTI-MASTER milling heads feature the
                the requirements of the die and mold maker.     combination of negative rake angles near the head tip
                                                                with positive rake angles along the most part of the
                There are two main types of ball nose heads:    spheric cutting edge in MM HCR… heads, increased
                Multi-flute MM EB… heads and 2 flute            area of the spheric edge in bulb-type MM HBR…
                “economy” MM H…heads (table below).             heads and others. A tooth of the head is extremely
                                                                strong and successfully stands up against considerable
                The cutting geometry of MM EB… heads is not different   loading; which is important for rough profiling and
                from the solid carbide ball nose cutters; however   milling hardened steel. However, the helix angle of the
                the heads usually have smaller cutting lengths. The   heads is much less when compared with the solid
                approach to finding cutting data for MM EB… heads   carbide ball nose cutters and MM EB… heads.
                is the same as the method for the solid cutters.

                Ball Nose Heads of MULTI-MASTER Family
                             Cutting Edge      Rake    Number of   Ø        Head Ø, mm           Main Milling
                 Head                          Face      Flutes  tol.                            Application
                          Spherical  Cylindr.                         6   8   10  12  16   20
                 MM HCR                        sintered          h9                             rough to finish
                            180°      yes
                 MM HRF                                    2     h7                             finish + milling
                 MM HBR    ~240°      no       ground            h7                               hard steel
                 MM EB      180°      yes                 2; 4   e8                             rough to finish


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