Black Anchor Bolt
- -Black Anchor Bolts are a type of anchor rods that are fully anchored, actively reinforce the surrounding rock, and immediately bear the load.
- -High-strength tray beraing capacity, the rod body than retaining ring pull off the bearing force than pole.
- -Usually combined with domed plates or combi plate, provides anchoring force for rock strata.
Product Details
Black Anchor Bolt
Black Anchor Bolt is a frictional ground support system.When friction bolt is inserted into drilling hole with smaller diameter, the slot partially closes and bolt diameter is compressed, which creates radial forces on rock roof surface along the whole length and firmly holds the rock.
Black Anchor Bolt Mechanical Properties
| Technical Data | TRFB33 | TRFB39 | TRFB42 | TRFB47 | |
| Drill hole diameter (mm) | 30-32 | 35-38 | 38-40 | 43-45.5 | |
| Min.Yield strength (kN) | 80 | 90 | 100 | 120 | 135 |
| Min.Tensile strength (kN) | 100 | 120 | 132 | 165 | 180 |
| Typ.Tensile strength (kN) | 120 | 130 | 150 | 180 | 200 |
| Elongation (A%) | ≥20 | ≥20 | ≥20 | ≥20 | |
| Typ.Anchorage (ton/m) | 4-6 | 4-7 | 5-8 | 6-10 | |
| Bearing plate (mm) | 150x150x4 | 150x150x4 | 150x150x4.5 | 150x150x4 200x200x5 Combi Plate | |
Black Anchor Bolt Length & Package
Length:450-3000mm as specified
Package:100pcs — 300pcs each bundle as specified
Black Anchor Bolt Applications
Mines
Tunnels
Slopes
Places where need ground support
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