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2CHA                                                                                                                                             RPM : rev./min Feed : mm/min

              Material           Carbon Steels                                                  Alloy steels                           Prehardened Steels/ Hardened Steels
                                 S45C / S50C                                                 SK / SCM / SUS                                       NAK / SCM / SUS
            Hardness
                Velocity         ~ 225HB                                                     225 ~ 325HB                               30 ~ 45HRc

     Shank Diameter              Vc = 25 ~ 50m/min                                           Vc = 20 ~ 40m/min                         Vc = 15 ~ 40m/min
          3mm
          4mm                    RPM                    FEED                  RPM                              FEED                           RPM      FEED
          6mm
          8mm             2,700 ~ 5,300                59 ~ 86         2,100 ~ 4,200                          46 ~ 67                  1,600 ~ 3,200  35 ~ 51
          10mm            2,000 ~ 4,000                48 ~ 68         1,600 ~ 3,200                          38 ~ 54                  1,200 ~ 2,400  29 ~ 41
          12mm            1,300 ~ 2,700                36 ~ 49         1,100 ~ 2,100                          31 ~ 42                                 22 ~ 30
                          1,000 ~ 2,000                32 ~ 42                                                26 ~ 34                    800 ~ 1,600  22 ~ 30
                                                       30 ~ 37           800 ~ 1,600                          23 ~ 29                    600 ~ 1,200  17 ~ 22
                            800 ~ 1,600                28 ~ 35           640 ~ 1,300                          21 ~ 27                    600 ~ 1,200  17 ~ 22
                            700 ~ 1,300                                  530 ~ 1,100
                                                                                                                                           400 ~ 800

     Depth of Cut

                                 Water Soluble or Oil Cutting fluid is recommended.

     3CHA                                                                                                                                             RPM : rev./min Feed : mm/min

              Material           Carbon Steels                                                  Alloy steels                           Prehardened Steels/ Hardened Steels
                                 S45C / S50C                                                 SK / SCM / SUS                                       NAK / SCM / SUS
            Hardness
                Velocity         ~ 225HB                                                     225 ~ 325HB                               30 ~ 45HRc

     Shank Diameter              Vc = 25 ~ 50m/min                                           Vc = 20 ~ 40m/min                         Vc = 15 ~ 40m/min
          3mm
          4mm                    RPM                    FEED                  RPM                              FEED                           RPM      FEED
          6mm
          8mm             2,700 ~ 5,300                47 ~ 69         2,100 ~ 4,200                          37 ~ 54                  1,600 ~ 3,200  28 ~ 41
          10mm            2,000 ~ 4,000                38 ~ 54         1,600 ~ 3,200                          30 ~ 43                  1,200 ~ 2,400  23 ~ 33
          12mm            1,300 ~ 2,700                29 ~ 39         1,100 ~ 2,100                          25 ~ 34                                 18 ~ 24
                          1,000 ~ 2,000                26 ~ 34                                                21 ~ 27                    800 ~ 1,600  18 ~ 24
                                                       24 ~ 30           800 ~ 1,600                          18 ~ 23                    600 ~ 1,200  14 ~ 18
                            800 ~ 1,600                22 ~ 28           640 ~ 1,300                          17 ~ 22                    600 ~ 1,200  14 ~ 18
                            700 ~ 1,300                                  530 ~ 1,100
                                                                                                                                           400 ~ 800

     Depth of Cut

                                 Water Soluble or Oil Cutting fluid is recommended.

     2CEN                                                                                                                                             RPM : rev./min Feed : mm/min
                                                                                                                                                         Aluminum Alloys
                          Mild Steels / Carbon Steels           Alloy Steels / Tools Steels                        Prehardened Steels
     Material                    SS400 / S55C                       SKD / SUS / SCM                             HPM / NAK (30~45HRC)

     Outside Diameter     RPM            FEED                   RPM    FEED                                   RPM      FEED            RPM                FEED

     2mm                  1,400           100                     800    50                                     650      40            4,800              280
     3mm                  1,400           100                     800    50                                     650      40            4,800              280
     4mm                  1,280           100                     690    50                                     580      40            4,200              280
     5mm                  1,300           100                     640    50                                     520      40            3,300              280
     6mm                  1,150           100                     600    50                                     480      40            2,900              280
     8mm                  1,000           100                     530    50                                     420      40            2,600              280
     10mm                                                         490    40                                     390      30            2,400              260
     12mm                   850            90                     410    40                                     310      30            1,900              260
     14mm                   720            90                     340    40                                     270      30            1,700              240
     16mm                   610            90                     310    40                                     250      30            1,500              230
                            550            90

     Depth of Cut

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