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USER GUIDE




          Regrinding Instructions

                Regrinding Instructions for AP                   Regrinding Instructions for AG
                and ACP Geometries                               and ACG Geometries
                For each grinding operation, rotate the drill    For each grinding operation, rotate the drill
                180° and repeat the grinding procedure.          180° and repeat the grinding procedure.              SOLID CARBIDE DRILLS
                 1 Primary Clearance                              1 Primary Clearance








                               a°    D Range                                     a°    D Range
                                7     0.8-6.0                                    7      0.8-6.0
                               10      >6.1                                      10     >6.1
                 2  Secondary Clearance                           2   Secondary Clearance








                3 Chisel                                          3 Chisel










                                            a°    D Range                                     a°    D Range
                                            100    3.0-4.8                                   100     3.0-4.8
                                            105    4.9-10                                    105     4.9-10
                                            95     10.1-20                                    95    10.1-20
                 4 Edge Preparation                               4 Edge Preparation









                                               R    D Range                                      R   D Range
                                              0.02  0.8-6.0                                     0.02  0.8-6.0
                                              0.03  6.1-18.0                                    0.03  6.1-18.0
                                              0.04  18.1>UP                                     0.04  18.1>UP
                Grinding Wheel Recommended Specifications:       Grinding Wheel Recommended Specifications:
              1  Diameter grinding wheel: GA2                   1  Diameter grinding wheel: GA2
              2  Grinding wheel bond: synthetic resin           2  Grinding wheel bond: synthetic resin
              3  Grit size: 325/400 mesh (45/38µ)               3  Grit size: 325/400 mesh (45/38µ)
                                                                                                 3
                                                3
              4  Diamond concentration: C-75 (3.3 carat/cm )    4  Diamond concentration: C-75 (3.3 carat/cm )
              5  Cutting fluid emulsion 3%                      5  Cutting fluid emulsion 3%












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