Page 256 - ISCAR(HOLE_MAKING_CATALOG_65)
P. 256

USER GUIDE
      DEEP DRILLING - BTA SYSTEM

          Technical Information -
          Adjustable Counter Boring Head Diameter Settings

              Drill diameter is adjusted with an adjust ball for diameter ø25 - ø39.99 mm with the following method.







                                                   1. Slide the dimensional guide pad forward and then
                                                     re-tighten the lock screw at the measuring position.




                    Dimensional guide pad
               Head body                 Adjust ball


                                         Insert
                                                   2. Tighten the adjust screw.


                                       Adjust screw
                                Wrench
                           Drill Dia. øDc



                                                   3. As the adjust screw moves forward, insert
                                                     moves in a peripheral direction.











                                                   4. Measure the diameter with a micrometer. If the diameter is larger
                                                     than expected, loosen the adjust screw and insert screw, then
                                                     re-tighten the insert screw. Repeat the procedure from step 2.



                      Drill Dia. øDc





























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