Friction Bolt Ø39mm
Friction bolts
Friction Bolt Ø39 mm
- Bar diameter
- Ø39 mm
- Standard length
- 0.45 - 3.00 m
- Yield strength
- Minimum: 345 MPa – 75kN / Typical: 445MPa – 100 kN
Friction Bolts are manufactured from high strength steel tube which has a slot along its entire length. A ring, or collar, is welded on the outer end to hold a domed plate to the rock surface.
Features
-
Immediate ground support
Manufactured from high-strength steel tubing with a full-length slot, friction bolts provide instant radial compression and secure load transfer to the rock surface.
Immediate ground support
Manufactured from high-strength steel tubing with a full-length slot, friction bolts provide instant radial compression and secure load transfer to the rock surface.
Manufactured from high-strength steel tubing with a full-length slot, friction bolts provide instant radial compression and secure load transfer to the rock surface.
-
Versatile installation and testing
The Ø39 mm bolt is compatible with handheld rock drills and can be load tested using a special ring and hydraulic jack for reliable performance verification.
Versatile installation and testing
The Ø39 mm bolt is compatible with handheld rock drills and can be load tested using a special ring and hydraulic jack for reliable performance verification.
The Ø39 mm bolt is compatible with handheld rock drills and can be load tested using a special ring and hydraulic jack for reliable performance verification.
-
Enhanced durability
Optional hot-dip galvanizing offers added corrosion protection, and bolts can be paired with Ø47 mm types for mesh pinning applications.
Enhanced durability
Optional hot-dip galvanizing offers added corrosion protection, and bolts can be paired with Ø47 mm types for mesh pinning applications.
Optional hot-dip galvanizing offers added corrosion protection, and bolts can be paired with Ø47 mm types for mesh pinning applications.
Product specifications
Technical specifications
| Bar diameter |
Ø39
mm
|
|---|---|
| Standard length |
0.45 - 3.00
m
*
|
| Yield strength |
Minimum: 345 MPa – 75kN / Typical: 445MPa – 100 kN
|
| Tensile strength |
Minimum: 460 MPa – 100 kN / Typical: 510 MPa – 115 kN
|
| Mass per metre |
1.77
kg
|
-
* Non-standard lengths are available on request.
| Bar diameter |
Ø39
mm
|
|---|---|
| Standard length |
0.45 - 3.00
m
|
| Yield strength |
Minimum: 345 MPa – 75kN / Typical: 445MPa – 100 kN
|
| Tensile strength |
Minimum: 460 MPa – 100 kN / Typical: 510 MPa – 115 kN
|
| Mass per metre |
1.77
kg
|
| Hole diameter range |
Ø35 mm min. / Ø38 mm max.
|
| Cross sectional area |
220
mm²
|
Our range of friction bolts
Friction Bolt Ø47 mm
- Bar diameter
- Ø47 mm
- Standard length
- 2.10 - 3.00 m
- Yield strength
- Minimum: 400 MPa – 137 kN / Typical: 445 MPa – 153 kN
Friction Bolt Ø33 mm
- Bar diameter
- Ø33 mm
- Standard length
- 0.45 - 3.00 m
- Yield strength
- Minimum: 415 MPa – 75 kN / Typical: 510 MPa – 90 kN
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