Name: R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer
Brand: KSQ Technologies (Beijing) Co. Ltd
Price: 508.50 USD
Availability: InStock

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R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer

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full thread steel anchor bolt

self drilling anchor bolt system

forging drilling tool manufacturer

R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System

The Self-Drilling Anchor (SDA) System is an advanced anchoring solution engineered for tunneling and ground engineering applications. This innovative system combines drilling, anchoring, and grouting into a single continuous operation, delivering enhanced safety, speed, and reliability in challenging ground conditions.

How the Self-Drilling Anchor System Works

During the drilling process, the hollow anchor bar facilitates the free passage of air and water, effectively removing debris from the borehole. Once the target depth is reached, grout can be immediately injected through the same hollow bar, ensuring complete encapsulation of the entire bolt in one efficient step.

Key System Features

Optimized for difficult ground conditions including loose, fractured, or water-bearing soils
High-speed installation: drilling, placement, and grouting completed in one operation
No casing required - hollow bar serves as both drill rod and permanent anchor
Capable of simultaneous drilling and grouting operations
Flexible installation in any direction, including upward applications
Ideal for confined spaces, low overhead areas, and hard-to-reach locations
Simple post-grouting capability for enhanced performance

Technical Specifications

Model	R25N	R32N	R32S	R38N	R51L	R51N	T76N
Outside Diameter (mm)	25	32	32	38	51	51	76
Internal Diameter (mm)	14	19	16	19	36	33	52
Ultimate Load Capacity (kN)	200	280	360	500	550	800	1600
Yield Load Capacity (kN)	150	230	280	400	450	630	1200
Tensile Strength, Rm (N/mm²)	800	800	800	800	800	800	800
Yield Strength, Rp0.2 (N/mm²)	650	650	650	650	650	650	650
Weight (Kg/m)	2.3	3.2	3.6	5.5	6.5	8	16

Steel Grade: EN10083-1 (Alloy Structure Steel)
Compared to carbon steel, alloy structure steel offers superior anti-corrosion capacity and enhanced mechanical properties.

Self Drilling Anchor System Components

Hollow Anchor Rod Couplings Anchor Plate Anchor Nut Sacrificial Drill Bit

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