Dynamic friction bolts
MD / MDX Bolt
- Bar diameter
- Ø20 mm
- Standard length
- 1.8 - 4.0 m
- Yield strength
- 155 - 180 kN
MD / MDX bolts are engineered for high-performance in demanding underground environments. The bolts are designed to provide superior load-bearing capacity and stability, making them ideal for use in both mining and tunneling operations. The MD / MDX bolts enable efficient installation and are adaptable to varying ground conditions. Robust construction ensures long-term durability and reliability.
Features
-
Unique yield design
The bolt can absorb high dynamic loads. Extra wedge expansion provides superior anchoring capability.
-
Fully galvanized
The sealed end prevents atmospheric corrosion. Galvanized steel provides long term durability.
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Easy installation
With standard jumbo tools. MD / MDX bolts also have single pass installation.
Product specification
- Bar diameter
- Ø20 mm
- Standard length
- 1.8 - 4.0 m
- Yield strength
- 155 - 180 kN
- Bar elongation (5d)
- 22 %
- Bar rolled thread
- M22x2.5 LH
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