Self Drilling Anchor (SDA)
SIGRICARE is a premier manufacturer and exporter of Self Drilling Anchor (SDA) Bolt Systems, hollow bar anchors, rock bolts, couplers, plates, and sacrificial drill bits.
SDA Anchor Plate (Domed Bearing Plate)
Heavy-duty structural steel domed bearing plates engineered to distribute rock anchor pre-stressing and working loads uniformly into rock surfaces, shotcrete facings, or wire mesh. The central dome allows angular misalignment up to 5–7 degrees when paired with spherical hexagonal anchor nuts, eliminating eccentric bending moments.
SDA Anchor Nuts (Spherical Hexagonal Nuts)
Precision machined spherical hexagonal anchor nuts manufactured from Ck45 / micro-alloy steel with certified hardness of HRC 25–30. Specifically designed with a spherical seating face to mate with domed bearing plates, ensuring uniform pre-stressing and load distribution even on inclined rock faces.
OVERVIEW: Self Drilling Anchor (SDA)
The SIGRICARE Self Drilling Anchor (SDA) System combines rotary-percussive drilling, hollow anchor bar installation, and pressure grouting into a single continuous pass. Specially engineered for loose, collapsing, and fractured ground conditions where conventional borehole drilling is impossible without casing. Available across complete thread standards: R25, R32, R38, R51, and T76 compliant with ISO 10208 and EN 14199.