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DCN R-8D : SUMOCHAM 8xD drills with indexable heads, cylindrical shanks and internal coolant holes. Feature 4 standard drilling head types for drilling on 4 different material groups.
COOLANT THROUGH TOOL 
  DesignationD min D maxLdD3L1L4Po. SizePLLUOALGICATGIREMgiic
  DCN 060-048-12R-8D 6.006.4048.012.0016.0062.045.06.01.0949.1107.003203268 0
  DCN 065-052-12R-8D 6.506.9052.012.0016.0066.345.06.51.1853.2111.303203277 0
  DCN 070-056-12R-8D 7.007.4056.012.0016.0070.645.07.01.2757.3115.603202949 0
  DCN 075-060-12R-8D 7.507.9060.012.0016.0074.645.07.01.3661.4120.003203283 0
  DCN 080-064-12R-8D 8.008.4064.012.0016.0079.445.08.01.4665.5124.403202727 0
  DCN 085-068-12R-8D 8.508.9068.012.0016.0083.445.08.01.5569.6128.403203200 0
  DCN 090-072-12R-8D 9.009.4072.012.0016.0087.845.09.01.6473.6132.803202730 0
  DCN 095-076-12R-8D 9.509.9076.012.0016.0091.845.09.01.7377.7136.803203201 0
  DCN 100-080-16R-8D 10.0010.4080.016.0020.0096.248.010.01.8281.8144.203202733 0
  DCN 105-084-16R-8D 10.5010.9084.016.0020.00100.248.010.01.9185.9148.203203202 0
  DCN 110-088-16R-8D 11.0011.4088.016.0020.00104.648.011.02.0090.0152.603202734 0
  DCN 115-092-16R-8D 11.5011.9092.016.0020.00108.648.011.02.0994.1156.603203203 0
  DCN 120-096-16R-8D 12.0012.4096.016.0020.00113.048.012.02.1898.2161.003202735 0
  DCN 125-100-16R-8D 12.5012.90100.016.0020.00117.048.012.02.27102.3165.003203204 0
  DCN 130-104-16R-8D 13.0013.40104.016.0020.00121.648.013.02.37106.4169.603202736 0
  DCN 135-108-16R-8D 13.5013.90108.016.0020.00125.648.013.02.46110.5173.603203205 0
  DCN 140-112-16R-8D 14.0014.40112.016.0020.00132.148.014.02.55114.6180.103202737 0
  DCN 145-116-16R-8D 14.5014.90116.016.0020.00136.248.014.02.64118.6184.203203206 0
  DCN 150-120-20R-8D 15.0015.90120.020.0025.00143.750.015.02.73122.7193.703202738 0
  DCN 160-128-20R-8D 16.0016.90128.020.0025.00153.350.016.02.91130.9203.303202739 0
  DCN 170-136-20R-8D 17.0017.90136.020.0025.00162.950.017.03.09139.1212.903202740 0
  DCN 180-144-25R-8D 18.0018.90144.025.0032.00172.556.018.03.28147.3228.503202741 0
  DCN 190-152-25R-8D 19.0019.90152.025.0032.00182.056.019.03.46155.5238.003202742 0
  DCN 200-160-25R-8D 20.0020.90160.025.0032.00191.656.020.03.64163.6247.603202743 0
  DCN 210-168-25R-8D 21.0021.90168.025.0032.00201.256.021.03.82171.8257.203202744 0
  DCN 220-176-25R-8D 22.0022.90176.025.0032.00210.856.022.04.00180.0266.803202745 0
  DCN 230-184-32R-8D 23.0023.90184.032.0042.00220.460.023.04.19188.2280.403202746 0
  DCN 240-192-32R-8D 24.0024.90192.032.0042.00230.060.024.04.37196.4290.003202747 0
  DCN 250-200-32R-8D 25.0025.90200.032.0042.00239.560.025.04.55204.6299.503202748 0
  DCN 260-208-32R-8D 26.0026.90208.032.0042.00249.360.026.04.73212.7309.303203113 0
  DCN 270-216-32R-8D 27.0027.90216.032.0042.00258.660.027.04.91220.9318.603203124 0
  DCN 280-224-32R-8D 28.0028.90224.032.0042.00268.260.028.05.10229.1328.203203137 0
  DCN 290-232-32R-8D 29.0029.90232.032.0042.00277.860.029.05.28237.3337.803203226 0
  DCN 300-240-32R-8D 30.0030.90240.032.0042.00287.460.030.05.46245.5347.403203150 0
  DCN 310-248-32R-8D 31.0031.90248.032.0042.00297.060.031.05.64253.6357.003203162 0
  DCN 320-256-32R-8D 32.0032.90256.032.0042.00306.560.032.05.82261.8366.503203174 0

Prior to using the 8xD drill, it is recommended to drill a pre-hole by using a DCN 1.5xD drill or a centering drill. It is not required if HCP drilling head is used.