Page 6 - HOLE_MAKING_CATALOG_INCH_2022_P237-P372
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SELECTION GUIDE
      DEEP DRILLING - BTA SYSTEM

          Indexable Trepanning Heads
                  Applications                                   STS (Single Tube System)
                                                                        ISTR
                                                      EC                                    IC



                   Drill head







                Drill diameter (inch)            Ø3.937 - 12.913                       Ø3.937 - 12.047

           Thread type  Internal single-start thread  3                                     3
                External 4-start thread
                                                                                            -
                                                       -


                 Hole tolerance                       IT10                                 IT10
              Surface finish Ra (μinch)               80                                    80
              Deep hole drilling machines             3                                     3
           Machine   Lathes                            -                                    -


               Machining centers M/C                   -                                    -
             P        Stainless                       •••                                  •••
                       Steel
            M
                                                      •••
                                                                                           •••
           Workpiece material  K  Non-ferrous         •••                                  •••
                      Cast iron
                                                      •••
                                                                                           •••
             N
             S
                     Superalloys
                                                                                            ••
                                                      ••
             H  Hard materials (≥40HRC)               ••                                    ••
                   Insert type                       TPMX                                  TPMX
                     Page                             311                                  315
          •••(Excellent)      •(Standard)

























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