IMMEDIATE FRICTIONAL SUPPORT.
Friction bolts have been used internationally in mining for decades and are considered the simplest form of ground support available in metal mining. Compression of the high tensile steel "C" shape into a hole diameter smaller than the tube generates a load transfer from the steel to the rock. A steel ring is fixed to the collar end of the tube that will retain a plate on the installed tube to establish compressive force against rock.
Available in either black or hot dip galvanised. Variety of diameters (34 mm, 40 mm and 47 mm) and various lengths from 600 mm to 3,000 mm
Used in the development and production headings for immediate support with quick and easy installation.
PLATES
We can supply a comprehensive range of plates for use with friction bolts. Plates most typically used with friction bolts are:
- Dome plates
- Combi plates
DRIVERS
We can supply a range of drivers for use with hand-held or mechanised bolting equipment.
ANCHORING CEMENT GROUTS
We offer a comprehensive range of cement grouts for general and specific bolting applications.
- INCREASED CONTACT SURFACE
- IMMEDIATE FRICTIONAL SUPPORT
- CAN BE POST GROUTED
- Increased contact surface providing higher pull out loads
- Immediate frictional support at the face
- Install with hand-held or mechanised equipment
- Quick an easy installation
- Post-grout with Minova cement grouts for extra load bearing capacity
- Various diameters and lengths
| MECHANICAL PROPERTIES | STRATA BOLT 34 | STRATA BOLT 40/41 | STRATA BOLT 47 |
|---|---|---|---|
| Typical Bolt Diameter (mm) | 34 | 40 | 47 |
| Yield Strength (MPa) | 410 | 410 | 350 |
| Yield Force (MT) | 7.2 | 8.4 | 11.6 |
| Tensile Strength (MPa) | 520 | 520 | 430 |
| Tensile Force (MT) | 9.1 | 10.7 | 14.2 |
| Elongation % | 18 | 18 | 20 |
| Outer Diameter (mm) | 34.9±0.5 | 41±1 | 47.5±1 |
| Taper Diameter (mm) | 21±1 | 26±2 | 34-37 |
| Taper Length (mm) | 75±2 | 75±1 | 75±1 |
| Slot Width (mm) | 14.9±2 | 20±2 | 24.5±1 |
| MECHANICAL PROPERTIES | STRATA BOLT 34 | STRATA BOLT 40/41 | STRATA BOLT 47 |
|---|---|---|---|
| End Slot Width (mm) | 0-5 | 0-5 | 0-5 |
| Ring Standoff Distance (mm) | 3.75±0.25 | 5.5±0.25 | 5.5±0.25 |
| Material Thickness (mm) | 2.3 | 2.3 | 3.2 |
| Bolt Length (mm) | L +/- 15mm | 1475-1525 | L +/- 15mm |
| PLATE NAME | DIMENSIONS (mm) |
|---|---|
| Dome Plate | 150 x 150 x 4 |
| Dome Plate | 150 x 150 x 7 |
| Dome Plate | 200 x 200 x 4 |
| Combi Plate | 280 x 300 |
| Combi Plate | 240 x 300 |
- Bolts are usually packed 150 bolts per pallet
- Friction bolts are available in black or hot dip galvanised
