Page 283 - Demo

281DEEP HOLE DRILLINGExplanation of FINE-BEAM Drilling Heads DescriptionExample:DSD %u2013 EF %u2013 25.50 %u2013 FB1 2 31 Designation of Drilling HeadDSD %u2013 drilling head for deep drilling using single tube systemDDD %u2013 drilling head for deep drilling using double tube system2 Connection TypeEF %u2013 external 4 start thread connectionIF %u2013 internal single start thread connection3 Cutting Diameter (DC)DCBasic Dimensions of Drilling Heads DSD%u2026FTSingle Tube SystemDSD-EF%u2026FBDeep drilling heads with external 4 start thread connectionDSD-IF%u2026FBDeep drilling heads with internal single start thread connectionDCPLOALDCONMSOALDC DCONMSPLDRVS Wrench sizeDouble Tube SystemDDD-EF%u2026FBDeep drilling heads with external 4 start thread connectionDC DCONMSOALPLDC %u2013 cutting diameterOAL %u2013 overall lengthPL %u2013 point lengthDCONMS %u2013 connection diameter machine sideTH %u2013 thread designation