Page 4 - HOLE_MAKING_CATALOG_INCH_2022_P237-P372
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SELECTION GUIDE
      DEEP DRILLING - BTA SYSTEM

          Brazed Drill Heads
                                                                                                     DTS
                    Applications                         STS (Single Tube System)
                                                                                              (Double Tube System)
                                             ISD-E0            ISD-E1           ISD-E2/E3           IDD-E3




                 Brazed drill heads






                 Drill diameter (inch)     Ø.315 - .582       Ø.496 - .787     Ø.496 - 2.559      Ø.725 - 2.559

                External single-start thread
                                                                  -
                                                                                    -
                                                                                                      -
            Thread type  External 2-start thread  3           Ø.496 - .613     Ø.614 - 2.559          -
                                               -
                                                                                Ø.496 - .613
                  External 4-start thread
                                                              Ø.614 - .787
                                                                                                      3
                                               -
                   Hole tolerance              IT9               IT9               IT9               IT9
               Surface finish Ra (μinch)       80                80                80                80
                Deep hole drilling machines    3                 3                 3                  3
            Machine  NC machines               - -                - -               - -               3
                                                                                                      3
                        Lathes
                 Machining centers M/C         -                  -                 -                 3
                          Steel
               P         Stainless            •••               •••                •••               •••
                                                                •••
                                                                                                     •••
                                                                                   •••
                                              •••
               M
            Workpiece material  K  Non-ferrous  •••             •••                •••               •••
                        Cast iron
                                                                                   •••
                                              •••
                                                                                                     •••
                                                                •••
               N
                       Superalloys
               S
                                               ••
                                                                                                     ••
                                                                 ••
                                                                                   ••
               H  Hard materials (≥40HRC)      ••                ••                ••                ••
                      Page                    283                283               284               285
         ••• (Excellent)    • (Standard)




















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