SELF-DRILLING BARS

Self drilling bars

Self-drilling bars

The self-drilling bar is a very versatile tool, which guarantees maximum flexibility and speed of installation.

The self-drilling hollow anchor bar carries out three functions:

Drill rod
Injection channel
Sealed shaft

ISO 10208 thread

The self drilling bars are produced using plastic deformation, creating the full ISO 10208 thread on the outer surface of a pipe.

Multiple functions

The profile produced has multiple functions:

  • Acts as a connector, enabling a series of bars to be joined together, using joint sleeves;
  • Enables the installation of the drilling bit most suited to the ground conditions;
  • Is used for direct attachment to the drilling machine;
  • Enables the self drilling bar to be cut to the desired length, whilst maintaining the threaded end;
  • The corrugated form increases adherence between the steel and the grout or injected resin.

Self-drilling bar

Self-drilling bars

Type of bar Yield
strength
Tensile
strength
Section Weight Thickness Nominal
diam.
32-210 160
kN
210
kN
330
mm2
2,7
kg/m
4,00
mm
32
mm
32-250 190
kN
250
kN
370
mm2
2,9
kg/m
4,30
mm
32
mm
32-280 220
kN
280
kN
410
mm2
3,2
kg/m
4,85
mm
32
mm
32-320 250
kN
320
kN
470
mm2
3,7
kg/m
5,80
mm
32
mm
32-360 280
kN
360
kN
520
mm2
4,1
kg/m
6,50
mm
32
mm
32-400 330
kN
400
kN
595
mm2
4,6
kg/m
8,30
mm
32
mm
Type of bar Yield
strength
Tensile
strength
Section Weight Thickness Nominal
diam.
38-500 400
kN
500
kN
745
mm2
5,85
kg/m
8,00
mm
38
mm
38-540 450
kN
540
kN
802
mm2
6,30
kg/m
9,10
mm
38
mm
38-600 480
kN
600
kN
900
mm2
7,00
kg/m
10,50
mm
38
mm
51-550 450
kN
550
kN
810
mm2
6,35
kg/m
5,90
mm
51
mm
51-660 540
kN
660
kN
975
mm2
7,65
kg/m
7,30
mm
51
mm
51-800 640
kN
800
kN
1210
mm2
9,45
kg/m
9,50
mm
51
mm

The hollow bar meets the requirements of EN 14490 on metallic reinforcement. Thread according to ISO 1720 or 10208.

Tolerances:

  • Tensile strength / Yield strength: -5%
  • Effective diameter: -0,2mm+ 0,2mm
  • Internal diameter: ± 1,8mm
Tip
TRIPLE
BLADE
TETRA
BLADE
BUTTON
DROP
BUTTON

DRILLING DIAMETER (mm)

R32 R38 R51 R76
76 76 95
110
51
55
76
76
90
115
100
115
115
130
150
51
55
76
76
90
100
100 | 115
130 | 150
180 | 200
100 | 115
130 | 150
180 | 200
51
55
76
76
90
115
100 | 115
130 | 150
180 | 200
130 | 150
180 | 200
R32 R38 R51 R76
76 76
51
51
76
76
90
115
130
90
115
130
130

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