Supanchor Self Drilling Anchors

Supanchor Self Drilling Anchors are a 3-in-1 hollow bar anchoring system that combines drilling, grouting, and anchoring into a single continuous operation. A sacrificial drill bit is permanently attached to the hollow steel bar. As the bar is rotated into the ground, grout is simultaneously flushed through the hollow core, eliminating the need for a pre-drilled or cased borehole. Argentium is the authorised supplier of Supanchor products in India.

Unlike conventional rock bolts that require a separate pre-drilled borehole and casing system, Supanchor Self Drilling Anchors perform drilling, placement, and grouting in one step. This dramatically reduces installation time, labour costs, and equipment requirements — especially in unstable, cohesive, or unconsolidated ground where conventional methods are impractical.

Supanchor Self Drilling Anchors are widely used across geotechnical and underground engineering applications, including:

• Tunnel radial bolting and forepoling
• Slope stabilisation and soil nailing
• Face stabilisation in tunneling
• Micro-injection piles and foundation support
• Retaining wall anchoring
• Portal preparation and ground consolidation

Supanchor Self Drilling Anchors are specifically designed for difficult and unstable ground conditions — including loose soil, unconsolidated fill, cohesive clay, soft to fractured rock, gravel, and silt. They perform particularly well where maintaining an open borehole is impossible without casing.

Supanchor anchors are available in multiple rod sizes such as R25, R32, R38, R51, and T76, with ultimate load capacities ranging from approximately 200 kN to over 1,900 kN depending on the model. Each size has specific yield strength, tensile strength, and weight-per-metre ratings to suit different project load demands.

Yes. One of the key advantages of the Supanchor system is its flexibility of installation direction — including vertically upward, horizontal, and at any angle. The system is also designed for use in areas with limited height clearance and restricted access, making it ideal for underground mining and tunneling environments.

Supanchor Self Drilling Anchors are compatible with standard underground drilling rigs including the Boomer, ROC, and Mustang platforms. This compatibility with widely used equipment ensures ease of integration into existing tunneling and geotechnical operations without requiring specialised machinery.

Supanchor Self Drilling Anchors come with hot-dip galvanizing for corrosion protection, making them suitable for aggressive ground environments including high-moisture, acidic, and chemically active soils. This extends the service life of the anchors in both temporary and permanent applications.

The hollow core of the Supanchor bar allows grout or flushing media to be pumped through the rod to the drill bit tip during the drilling process. The grout stabilises the borehole walls as drilling progresses and then fills the annular space around the bar on completion, creating a solid, bonded anchor without needing a separate grouting step.

Yes. Supanchor Self Drilling Anchors are extensively used in slope stabilisation across India, particularly in hilly terrain, highway road cuts, and railway embankments. Argentium, based in New Delhi, supplies these anchors for Indian infrastructure projects requiring reliable, fast-installation ground support in challenging geological conditions.

R-thread anchor bars feature a rope-thread profile optimised for strong grout bonding across a wide range of applications such as slope stabilisation and tunnel reinforcement. T-thread bars have a larger thread pitch, which can provide enhanced pull-out resistance in applications that demand higher load-bearing capacity in variable or demanding geological environments.

Because Supanchor eliminates the separate steps of casing installation, borehole drilling, and post-grouting, installation time is significantly shorter — often reduced by 40–60% compared to conventional anchoring methods. This makes the system particularly cost-effective on large-scale tunnel and slope projects with tight construction schedules.

The Supanchor system includes a complete range of accessories: sacrificial drill bits (cross bits, button bits, and casting clay bits for varying ground types), hex nuts, bearing/anchor plates, extension couplings, and centralizers. These components ensure a fully integrated, standardised system that is easy to source and install.

Supanchor Self Drilling Anchors are available in India through Argentium International Pvt. Ltd., headquartered at 79 Shyam Lal Road, Daryaganj, New Delhi – 110002. Argentium is India’s leading authorised supplier of Supanchor products and provides technical support for tunneling, mining, and geotechnical projects across the country. You can contact them at admin@argentium.in or +91 9810238422.

Supanchor Self Drilling Anchors improve tunnel safety by providing immediate ground reinforcement during excavation, reducing the risk of borehole collapse in unstable zones. The simultaneous grouting fills voids and consolidates weak ground in real time. Used in forepoling, radial bolting, and face stabilisation, they are a critical safety tool in NATM (New Austrian Tunnelling Method) and similar tunneling approaches.