R25 Self Drilling Anchor Bolt

Self drilling anchor system consists of hollow anchor bar, drill bit, plate, nut, coupler and centralizer. It can combine drilling, grouting and anchoring functions together. It has the advantages of simple installation, safe, better anchoring effect, efficient and convenient. It is especially suitable for geological conditions that are difficult to form holes such as weathered rock, gravel layer, backfill soil, sand gravel layer, etc. It can be used as soil nails, micropiles, rock bolts, and ground anchors, applying in tunnel and underground engineering, ground and foundation engineering and slope stabilization engineering.

Features:

  1. Self drilling anchor bolt integrates drilling, injection and anchoring, which can improve construction efficiency and reduce composite cost.
  2. Hollow anchor bar has a full-length thread, which can be cut arbitrarily and lengthened by coupler according to your requirement.
  3. Continuous wave-thread, better bonding effect with cement slurry and better anchoring effect.
  4. Varieties of drill bits can be applied to complex geology in different projects.
  5. High efficiency, low composite cost, safe.

Hollow Anchor Bar

Size Outer Dia. Ultimate Load Yield Load Weight
mm in kN kips kN kips kg/m lbs/ft
SER25N 25 0.98 200 45 150 34 2.35 1.58
Note:
1. Customized products are available based on your specific requirements;
2. 1mm=0.03937in         1kN=0.225kips       1MPa=0.1450377ksi          1kg/m=0.672 lbs/ft

Drill Bit

Size Outer Dia. Application (Advice)
mm in
EX Sand, fills, gravel
SSR25/42 42 1.65
SSR25/51 51 2.01
EXX Softer sedimentary rocks such as marls, mudstones, siltstone
SSR25/35 35 1.38
SSR25/42 42 1.65
SSR25/51 51 2.01
ES-F Gravel, soft rock
SSR25/42 42 1.65
SSR25/51 51 2.01
ESS-F Weathered rock, stone walls, rubble
SSR25/35 35 1.38
SSR25/42 42 1.65
SSR25/51 51 2.01
EY Chalk, gravel
SSR25/51 51 2.01