TDO-I (D18.41-65.00) Double Tube Drill System with 4-Start Thread Connection Outer TubesDCd ONWSL LSCWS L min max min maxD5 DCONMS Outer Tube Inner Tube
Designationd RangeDCONMSDCONWSLSCWSInt TubedD5L minLmax
TDO-I0 L=(0-3700)MM18.41-20.0018.0016.0027.50TDI-N012.0010.000.0630.0
TDO-I1 L=(0-3700)MM20.01-21.8019.5018.0030.00TDI-N114.0012.000.0630.0
TDO-I2 L=(0-3700)MM21.81-24.1021.5019.5030.00TDI-N215.0013.000.0630.0
TDO-I3 L=(0-3700)MM24.11-26.4023.5021.0030.00TDI-N316.0014.000.0630.0
TDO-I4 L=(0-3700)MM26.41-28.7026.0023.5033.00TDI-N418.0016.000.0630.0
TDO-I5 L=(0-3700)MM28.71-31.0028.0025.5033.00TDI-N520.0018.000.0630.0
TDO-I6 L=(0-3700)MM31.01-33.3030.5028.0033.00TDI-N622.0020.000.0630.0
TDO-I7 L=(0-3700)MM33.31-36.2033.0030.0040.00TDI-N724.0022.000.0630.0
TDO-I8 L=(0-3700)MM36.21-39.6035.5033.0040.00TDI-N826.0024.000.0630.0
TDO-I9 L=(0-3700)MM39.61-43.0039.0036.0040.00TDI-N929.0027.000.0630.0
TDO-I10 L=(0-3700)MM43.01-47.0042.5039.0040.00TDI-N1032.0030.000.0630.0
TDO-I11 L=(0-3700)MM47.01-51.7046.5043.0044.00TDI-N1135.0032.000.0630.0
TDO-I12 L=(0-3700)MM51.71-56.2051.0047.0044.00TDI-N1239.0036.000.0630.0
TDO-I13 L=(0-3700)MM56.21-65.0055.5051.0044.00TDI-N1343.0040.000.0630.0
  • Please indicate overall length (L) when ordering
  • Ordering example: TDO-I13-L1100
  • For 18.41-65.00 diameter range, the inner tube should be 30 mm longer than the

outer tube

For tools, see pages: DDC-EA (246) DDC-EC (249)

Universal Marking for Deep Drilling Tools

Double Tube system 1ST : Single-start thread 2ST : Double-start thread 4ST : Four-start thread Tube L

D I 4STD.425d39L1600METRIC
D I 4STD1.673 d1.535 L62.992INCH
I : Inner ThreadTube ØDThread Pilot Ød
O : Outer Thread
Tube ØDTube L
DSLT

D32 d30 L1630 METRIC

I DSLT D1.260 d1.181 L64.173 INCH II

Inner Tube for Thread Pilot Ød Double tube system

DCONWS

DCONMS d D5 d

LSCWS L min max L min L min max max