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Application

Friction pipe bolts type ø33 ø39 ø48 are designed for roof and ribs support in mine working areas as an independent or secondary bolting roof support system. They are also used for the attachment of various components of mining equipment.

Installation procedure

Drill a hole of a length equal to the length of the bolt.

Preassemble the anchor by placing the washer on the rod. Prepare the bolt for installation by inserting the end into the borehole and the ring in the socket of the percussion machine with impact energy of 200 ÷ 250 J.
The bolt should be hammered in till the washer rests against the rock surface.

 

Technical data

 

 MinimumTypical

Yield Strength

415MPa

80kN

510MPa

100kN

Ultimate Tensile Strength of Tube

510MPa

100kN

610MPa

120kN

Friction Bolt Diameter

 

ø33mm x 2,3 mm

Hole Diameter Range

30mm min./32mm max.

Mass per Metre

 

1,53 kg

 

 MinimumTypical

Yield Strength

415MPa

90kN

510MPa

115kN

Ultimate Tensile Strength of Tube

510MPa

115kN

600MPa

135kN

Friction Bolt Diameter

   

ø39mm x 2,3 mm

Hole Diameter Range

 

35mm min./38mm max.

 

Mass per Metre

   

1,77 kg

 

 MinimumTypical

Yield Strength

345MPa

120kN

445MPa

160kN

Ultimate Tensile Strength of Tube

460MPa

165kN

510MPa

180kN

Friction Bolt Diameter

   

ø48mm x 3,2 mm

Hole Diameter Range

 

44mm min./46,5mm max.

 

Mass per Metre

   

2,86 kg