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Friction Bolt (Split Set Bolt)

Friction Bolts are used together with spherical plate and net for reliable ground support in mines, tunnels, slopes, etc.

 Features:

----- Made from high strength steel tube;

----- Make the strata and the bolt as a whole body, all strain of bolt will support to the strata tightly;

----- Fast and easy installation with hand held or mechanized equipment;

----- Provide support in radial and axial direction.

 

Recommended hole diameter calculation:

  ----- In the Rock Stratum:                      

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

         Depth of Hole: Length of Bolt +100mm      

         Deflection Rate of Drilling: 1%           

 -----  In the Coal Stratum:                      

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

         Depth of Hole: Length of Bolt +200mm      

         Deflection Rate of Drilling: 1.5%   

  Parameters:

Type

Specification

Bearing Capacity

High-Strength Plate(Spherical)

Length (mm)

Size(mm)

Bearing Capacity

FB-33

33×2.5mm

100KN

120×120×5.0

≥100KN

914-3000

33×3.0mm

120KN

120×120×6.0

≥120KN

914-3000

FB-39

39×2.5mm

130KN

150×150×5.0

≥150KN

1200-3000

39×3.0mm

150KN

150×150×6.0

≥180KN

1200-3000

FB-42

42×2.5mm

140KN

150×150×5.0

≥150KN

1400-3000

42×3.0mm

160KN

150×150×6.0

≥180KN

1400-3000

FB-47

47×2.5mm

150KN

150×150×6.0

≥180KN

1600-3000

47×3.0mm

170KN

150×150×6.0

≥180KN

1600-3000

 

 


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