Workpiece Double tube connector

Guide bush

Drill head Bar rest

Outer tube

Inner tube

L5

L1L2'L3L2''L4
Lo (OAL Outer)L6
Li (OAL Inner)
Lo =Outer tube overall lengthOuter tube overall length Lo 㲈 L1 + L2 + L3 + L4 - L5
Li=Inner tube overall length
L1=Guide bush length (or pilot hole depth)
Inner tube overall length Li = Lo + L6
L2 =Drilling depth (L2' + L2")
L3 =Bar rest length
L4 =Length of outer tube in connector*L6** DTC L4*
L5 =Length from drill tube tip and peripheral
DTC 4R (OT00 - OT13)12030
edge tip
DTC 5R (OT14 - OT20)0190
L6 =Difference between outer tube length and
DTC 6R (OT212 - OT25)0220

inner tube length** (mm) For smooth drill entry, make sure that the drill head is inside the guide bushing (or pilot hole) all the way up to 5 mm over the outer tube.

DCN-DCXL5DCN-DCXL5DCN-DCXL5
18.4 - 2031.525 - 26.4 4038 - 4345
20.01 - 21.833.526.41 - 314243.01 - 4755
21.81 - 21.9933.531.01 - 33.34747.01 - 51.751
22 - 24.135.533.31 - 36.25051.71 - 56.256
24.11 - 2535.536.21 - 39.65556.21 - 6566
25.01 - 26.437.539.61 - 476065 - 79.9975
26.41 - 2837.547.01 - 51.76680 - 111.9983
51.71 - 6571112 - 147.9987

148 - 183.99 86