MD/MDX Bolt friction bolt

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.

Unique yield design

The bolt can absorb high dynamic loads. Extra wedge expansion provides superior anchoring capability.

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.

Fully galvanized

The sealed end prevents atmospheric corrosion. Galvanized steel provides long term durability.

The sealed end prevents atmospheric corrosion. Galvanized steel provides long term durability.
Easy installation

With standard jumbo tools. MD / MDX bolts also have single pass installation.

Easy installation

With standard jumbo tools. MD / MDX bolts also have single pass installation.

With standard jumbo tools. MD / MDX bolts also have single pass installation.

Product specification

MD / MDX Bolt brochure (PDF)

D47 MD Bolt flyer (PDF)

D47 MDX Bolt flyer (PDF)

D39 MDX Bolt flyer (PDF)

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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