Friction AnchorBolt:

1.Material:steel
2.Fuction: split sets bolt for support
3.Diameter: 33mm 39mm 42mm 47mm

Frictionanchor for mining support is especially designed by GSIused together with dome plate for reliable ground support inhardrock mines, tunnels and slopes etc. 

1.Features: 

(1)Rollformed from high strength steel band with one end tapered tipfor easy insertion into a drill hole, the other end has a weldedring for holding the bearing plate.

(2)Provideimmediate ground support in radial and axial direction, notsuitable for very soft strata and permanentsupport. 

(3)Fastand easy installation with hand held or mechanized boltingequipment.

(4)Nocement grout and resin cartridge needed.

(5)Availablewith both black and galvanized.

2.Recommendedhole diameter calculation:

(1)InThe Rock Stratum :

 Diameterof Hole: (0.9-0.95) × Diameter of Bolt

 Depthof Hole: Length of Bolt 100mm

 DeflectionRate of Drilling : <1%

(2)InThe Coal Stratum:

 Diameterof Hole: (0.9-1.00) × Diameter of Bolt

 Depthof Hole: Length of Bolt 200mm

 DeflectionRate of Drilling : <1.5%

3.PROPERTY