Self Drilling Anchor Systems

Self Drilling Anchor Bolt Systems

Self drilling anchor bolt system is composed of hollow anchor bar, coupler, nut, drill bit, plate, and cen- tralizer. It can combine drilling, grouting and anchoring in one process. The Self-Drilling Hollow Bar Anchor System is comprised of a hollow threaded bar with an attached drill bit that can perform drilling, anchoring and grouting in a single operation. The hollow bar allows air and water to freely pass through the bar during drilling to remove debris and then allow grout to be injected immediately after drilling is completed. Grout fills the hollow bar and completely covers the entire bolt. Couplers can be used to join hollow bars and extend the bolt length while nuts and plates are used to provide the required tension.

JB Engineers offers Self Drilling Anchors in variants of R25, R32, R38, R51 and T76 and their accessories including the Anchor Nut, Anchor Plate, Anchor Coupler and Drilling bits depending on the geological condition of the project site (Type EX, EXX, ES, ESS, EY, EYY).

JB Engineers are the largest manufacturers, suppliers and exporters of all types of Self Drilling Anchor Bolt System in India.

Self Drilling Anchor Systems /Self Drilling Anchor Hollow Bolts Systems


JB Engineers has achieved the security application of 30,000,000 meters self-drilling anchor bar in the world. As the No.1 manufacturer and exporter of self-drilling anchors in Asia, JB Engineers self drilling anchor system is a bolting solution for difficult ground and rock conditions. The system enables drilling and grouting in one operation, making much saving in jobsite and project time.

A Self-Drilling Anchor Consists of:

  • Hollow Anchor Rod
  • Drill Bit
  • Bearing Plate
  • Hexagonal Nut
  • Extension Couplings

Componet Of Self Drilling Anchor System

Threaded rods

Threaded Hollow Bar

Hollow Bars have a continuous external thread with an R (rope thread) or T (trapezoidal thread) profile.



Flexibility in length by using couples. A specially designed stopping system ensures that the coupler is correctly positioned on the bars to be coupled.


Nuts and plates

The plates and nuts are used to create the anchor head. There are straight nuts and spherical nuts, each with their appropriate plates.


Drill bits

Choice of drill bits for different ground conditions.