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                                DRILLING (SOLID CARBIDE)                                                                                                                   Thinning

                                MSL

                                RECOMMENDED CUTTING CONDITIONS

                                MSL DRILL (l/d=20 30)

                                                         Drill Diameter     & 3.0& 6.0               & 6.0 & 10.0                       & 10.0 & 14.0
                                                                Conditions
                                   Work Material                            Cutting      Feed         Cutting       Feed                  Cutting       Feed
                                P Mild Steel            Hardness            Speed      (mm/rev)       Speed       (mm/rev)                Speed       (mm/rev)
                                                                            (m/min)                   (m/min)                             (m/min)
                                                              < 180HB
                                                                                 85 0.20                   85 0.25                             90 0.30
                                                                            (35  100) (0.15  0.25)  (45  120) (0.15  0.35)            (55  120) (0.20  0.35)

                                   Carbon Steel         180 280HB              80          0.20           90          0.25                    90          0.30
                                    Alloy Steel         280 350HB          (40  95)  (0.15  0.25)  (50  120)  (0.20  0.35)           (60  130)  (0.15  0.35)

                                                                                75          0.15           80          0.20                    85          0.25
                                                                            (35  80)  (0.15  0.20)  (45  115)  (0.15  0.25)           (55  115)  (0.15  0.30)

                                M Stainless Steel       < 200HB                 50          0.10          60           0.12                   70           0.15
                                                                            (20  80)  (0.05  0.15)  (20  90)   (0.05  0.15)           (20  90)   (0.10  0.20)
                                K  Cast Iron            Tensile Strength
                                                           < 350N/mm2           70          0.25          75           0.30                   80           0.35
                                                                            (40  85)  (0.15  0.30)  (50  90)   (0.20  0.35)           (50  95)   (0.20  0.40)
                                   Ductile Cast Iron    Tensile Strength
                                                           < 450N/mm2           65          0.20          70           0.25                   75           0.30
                                                                            (35  80)  (0.15  0.25)  (45  85)   (0.15 0.30)            (45  90)   (0.20  0.35)
                                S Heat Resistant Alloy  
                                                                                20          0.10          25           0.12                   25           0.15
                                                                            (10  25)  (0.05  0.15)  (15  30)   (0.05  0.15)           (15  30)   (0.10  0.20)

DRILLING MSL SUPER LONG DRILLS  Machining conditions can vary greatly, please use the above tables as a reference starting point only and adjust the values according to the conditions.
                                For drill lengths greater than l/d=10 it is recommended to drill a pilot hole.

CUTTING
    DATA

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