Friction Stabilizer
- -Friction Stabilizer, made from a strip of high-tensile steel, is roll-formed into a C-shape featuring a longitudinal slot for engagement. Designed with one end tapered to simplify insertion into a drill hole, the opposite end is securely welded to a ring that anchors the bearing plate.
- -Usually combined with domed plates, provides anchoring force for rock strata.
- -Friction Stabilizer undergoes very stringent tensile testing to ensure product quality.
- -Thermal diffusion galvanizing is available for the Friction Stabilizer.
Friction Stabilizer Functions
Friction Stabilizer is a frictional ground support system. When friction bolt is inserted into a drilling hole with a smaller diameter, the slot partially closes and bolt diameter is compressed, which creates radial forces on the rock roof surface along the whole length and firmly holds the rock.
Friction Stabilizer Features & Advantages
Made from high-strength steel band
Immediate frictional Support in axial and radial
Independent support without plates
Easy for installation
Simple design, cost-saving
Available in black, cold galvanizing, or hot dip galvanized
Friction Stabilizer 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 | 150x150x5 | |
Friction Stabilizer Accessories
Bearing plate, Driver, Pull collar.
Friction Stabilizer Length & Package
Length:450-3000mm as specified
Package:100pcs — 300pcs each bundle as specified
Friction Stabilizer Applications
Mines
Tunnels
Slopes
Places that need ground support
How to work
Begin by thoroughly evaluating the ground's properties.
Select a suitable drill bit and create a hole that conforms to the bolt's diameter, length, and the recommended drilling technique,
ensuring the hole extends a minimum of 150mm beyond the friction bolt's actual length.
Mount a plate onto the friction bolt with the dome facing the ring and the tapered end pointing forward.
Ensure that the friction bolts are positioned perpendicular to the rock surface when installed.
Insert the driver dolly into the bolt and proceed to drive the friction bolt into the hole until the plate makes solid contact with the rock surface.
Refrain from hammering the friction bolt once the plate is securely fixed to the rock surface to prevent any damage to the end of the bolt.
Conduct pull tests post-installation to assess the initial anchorage strength of the friction bolts.
