T40 Rock Bolting
t40 self drilling rock bolt

T40 rock bolting system is a fully threaded steel bar which can be drilled and grouted into loose or collapsing soils without a casing. The bar features a hollow center for simultaneous drilling and grouting and a rope thread for connection to standard drill tooling. Manufactured by cold rolling heavy wall steel tubing, this rock bolting system forms a standard rope thread profile, which increases the yield strength and producing a durable drill rod.


T40 rock bolting

Rock bolt Size Outer Dia. (mm) Inner Dia. (mm) Ultimate Load (KN) Yield Load (KN) Weight (Kg/m) Thread

T40/20 40 22 539 430 5.6 L/R

T40/16-2 40 21 660 525 6.3 L/R

T40/16-1 40 18 660 525 7.17 L/R

T40/16 40 16 660 525 7.40 L/R


Anchor Coupling

Coupling Outer Dia. (mm) Length (mm) Weight (Kg) Thread

54 140 1.18 L/R

57 140 1.44 L/R

Anchor Nut

Nut Size Type Key Size (mm) Length (mm) Weight (Kg)

T40 Spherical Collar Nut 65 50 0.86

Anchor Plate

Plate Size Type Dimensions (mm) Thickness (mm) Hole Dia. (mm) Weight (Kg)

T40 Plat Plate 115*115 20 56 1.60

T40 Plat Plate 125*125 12 56 3.50

T40 Plat Plate 200*200 12 56 3.50

T40 Plat Plate 200*200 15 54 4.58

T40 Plat Plate 200*200 30` 56 8.50

Drill Bit Adapter

Drill Bit Adapter Size Drill Bit Length (mm) Weight (Kg)

T40 R51 68 0.35


Centralizer Size Outer Dia. (mm) Length (mm) Weight (Kg)

T40 88 40 0.37

Drill Bits

Drill Bits Type Size Diameter (mm)

EX T40 ø76, ø90, ø115

EXX T40 ø76, ø89, ø90

ES-F T40 ø70, ø76, ø90

ESS-F T40 Ø70, ø90

Clay Bit T40 ø100, ø150