Page 82 - HOLE MAKING CATALOG p185-310

DEEP DRILLING - BTA SYSTEM TDO-I (D18.41-65.00) DCONWS LSCWS DCONMS Outer Tube
Double Tube Drill System d D5 Inner Tube
with 4-Start Thread L min
Connection Outer Tubes max

L min
max

Designation d Range DCONMS DCONWS LSCWS Int Tube d D5 L min L max

TDO-I0 L=(0-3700)MM 18.41-20.00 18.00 16.00 27.50 TDI-N0 12.00 10.00 0.0 630.0

TDO-I1 L=(0-3700)MM 20.01-21.80 19.50 18.00 30.00 TDI-N1 14.00 12.00 0.0 630.0

TDO-I2 L=(0-3700)MM 21.81-24.10 21.50 19.50 30.00 TDI-N2 15.00 13.00 0.0 630.0

TDO-I3 L=(0-3700)MM 24.11-26.40 23.50 21.00 30.00 TDI-N3 16.00 14.00 0.0 630.0

TDO-I4 L=(0-3700)MM 26.41-28.70 26.00 23.50 33.00 TDI-N4 18.00 16.00 0.0 630.0

TDO-I5 L=(0-3700)MM 28.71-31.00 28.00 25.50 33.00 TDI-N5 20.00 18.00 0.0 630.0

TDO-I6 L=(0-3700)MM 31.01-33.30 30.50 28.00 33.00 TDI-N6 22.00 20.00 0.0 630.0

TDO-I7 L=(0-3700)MM 33.31-36.20 33.00 30.00 40.00 TDI-N7 24.00 22.00 0.0 630.0

TDO-I8 L=(0-3700)MM 36.21-39.60 35.50 33.00 40.00 TDI-N8 26.00 24.00 0.0 630.0

TDO-I9 L=(0-3700)MM 39.61-43.00 39.00 36.00 40.00 TDI-N9 29.00 27.00 0.0 630.0

TDO-I10 L=(0-3700)MM 43.01-47.00 42.50 39.00 40.00 TDI-N10 32.00 30.00 0.0 630.0

TDO-I11 L=(0-3700)MM 47.01-51.70 46.50 43.00 44.00 TDI-N11 35.00 32.00 0.0 630.0

TDO-I12 L=(0-3700)MM 51.71-56.20 51.00 47.00 44.00 TDI-N12 39.00 36.00 0.0 630.0

TDO-I13 L=(0-3700)MM 56.21-65.00 55.50 51.00 44.00 TDI-N13 43.00 40.00 0.0 630.0

• 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)

Double Tube Universal Marking for Deep Drilling Tools
system

1ST : Single-start thread Tube L
2ST : Double-start thread

4ST : Four-start thread

D I 4ST D.425 d39 L1600 METRIC
D I 4ST D1.673 d1.535 L62.992 INCH

I : Inner Thread Tube ØD Thread Pilot Ød
O : Outer Thread

Tube ØD Tube L

DSLT D32 d30 L1630 METRIC
I INCH
DSLT
II D1.260 d1.181 L64.173

Inner Tube for Thread Pilot Ød
Double tube system

DCONWS d

DCONMS d D5

LSCWS L min L min
max max

L min
max

266 ISCAR