Tube length for special drills Please use the guide below to calculate the drill tube length. Workpiece Oil pressure head Bar rest Bar clamp Drill head Drill tube L5 L1 L2' L3 L2'' L4 OAL OAL = Drill tube overall length Drill tube length OAL 㲈 L1 + L2 + L3 + L4 - L5 L1 = Oil pressure head length L2 = Drilling depth (L2' + L2") L3 = Bar rest length L4 = Drill tube clamp length L5 = Length from drill tube tip and peripheral edge tip DCN-DCX L5 DCN-DCX L5 DCN-DCX L5 16 - 16.5 31.5 25 - 29.99 45 38 - 43.99 40 16.51 - 17.25 31.5 30 - 33.99 50 44 - 51.99 50 17.26 - 18 31.5 34 - 36.99 50 52 - 56.99 60 18.01 - 19 31.5 37 - 39.99 55 57 - 67.99 70 19.01 - 19.99 31.5 40 - 43.99 60 68 - 161.99 80 20 - 21.99 33 44 - 51.99 65 162 - 257.99 105 22 - 24.99 35 52 - 56.99 70 258 - 293.99 90 25 35 57 - 65 75 25.01 - 26.99 40 27 - 28 40 Tungaloy 065