The Self Drilling Hollow Anchor is a unique anchoring system and is today’s answer to the increasing demands of the tunnelling industry and ground engineering for safer and faster production.
The system provides advantages for all areas of its applications, where boreholes would require time consuming drilling with casing systems in unconsolidated or cohesive soil.

Features and advantages

• Particularly suitable for difficult ground conditions
• A high rate of installation since drilling, placing and grouting can be performed in a single operation
• Self-drilling system eliminates the requirement for a cased borehole.

Applications
Tunnelling:

• Radial bolting
• Forepoling
• Face stabilization
• Portal preparation

Ground engineering:

• Slope stabilization
• Micro injection pile
• Temporary support anchor
• Soil nailing

Thread self-drilling anchor systems
Drilling bits:

Soft Soil
Casting clay bits 75mm to 280mm

Medium rock
Button drill bits 42mm to 200mm
Cross drill bits 42mm to 200mm

Hard rock
Carbide button bits 42mm to 200mm
Carbide cross bits 42mm to 200mm