Self-Drilling Anchor Self-Drilling Anchor (SDA) rod manufacture in Delhi Self-Drilling Anchor (SDA) rod 32mm, 38mm, 25mm Available. Self-Drilling Anchor (SDA) rod with a 32 mm outer diameter, commonly referred to as an R32 system, is widely utilized in geotechnical engineering for applications such as slope stabilization, tunneling, and foundation support.​ Key Specifications of R32 SDA Rods: Outer Diameter: 32 mm​ Inner Diameter: Varies based on the specific model; for instance:​ R32N-21: 21.0 mm​ R32N-18.5: 18.5 mm​ maxdrillrocktools.en.made-in-china.com R32S-17.5: 17.5 mm​ Ultimate Load Capacity: Ranges from 280 kN to 360 kN, depending on the model.​ Yield Load Capacity: Between 230 kN to 280 kN.​ Weight: Approximately 2.9 kg/m to 4.1 kg/m.​ mlgsindia.com Components of the R32 SDA System: Hollow Anchor Rod: Serves as both the drill rod and grouting conduit.​ Drill Bit: Attached to the rod's end, allowing for simultaneous drilling and installation.​ Couplers: Used to extend the rod length by connecting multiple sections.​ Nuts and Plates: Secure the anchor and transfer loads to the surrounding structure.​ Advantages: Efficiency: Combines drilling, grouting, and anchoring in a single operation, reducing installation time.​ Versatility: Suitable for various ground conditions, including loose soils and fractured rock.​ High Load Capacity: Designed to bear significant loads, ensuring structural stability.