Page 44 - HOLE MAKING CATALOG p185-310
P. 44

DEEP DRILLING - BTA SYSTEM                                                                                                                                           USER GUIDE

                            Grade of Brazed Heads

                            DSD-E0                                                                     DSD-E2

                                    DSD-E0 (MBU style) STS                                                     DSD-E2 (BTU 2tip style) STS

                            Ø8 -14.79 mm (Ø.315– .582”)                                                Ø12.60 ~ 20.00 mm (Ø.496” ~ .787”)
                              ISO Wear resistance
                                                                                     Shock resistance  ISO Wear resistance                                  Shock resistance
                                                                          10 20
                                                                                 30 40                                    10 20 30 40

                            P PZ                                                                       P

                                                                                                                                                       PZT

                               M                      KZ                                               M

                               K                      KZ                                                                                                        PZN
                               N
                               S    DSD-E1 (UTE style) STS                                             K
                            DSD-E1
                                                                                                       N
                                                                                                       S PZT

                                                                                                       DSD-E3                         DDD-E3 (ETU style) STS
                                                                                                           DSD-E3 (BTU style) STS

                            Ø12.60 ~ 20.00 mm (Ø.496” ~ .787”)                                         Ø15.60 ~ 65.00mm            Ø18.40 ~ 65.00mm
                                                                                                       (Ø.615” ~ 2.559”)           (Ø.725” ~ 2.559”)
                            ISO Wear resistance                                  Shock resistance
                                                                                                       ISO Wear resistance                                  Shock resistance
                                    10 20 30 40

                                                                                                                          10 20 30 40

                            P                                                                          P                                     *
                                                                                                                                      *
                                                                        PZ                                                                 PZT PZX2T

                            M                                                                             M PZX2T                  *

                                                                        KZ                                K PZN
                                                                                                          N
                            K                                                                             S KZK
                            N KZ
                                                                                                       * indicates the first recommendation
                            S KZK

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