Strata Friction Bolts

Strata (friction) Bolt

Strata Bolts are high tensile steel tubular bolts roll-formed into a “C” shape that enables increased contact surface of the steel with the hole, providing higher pull out loads than traditional round friction bolts.

  • Increased contact surface providing higher pull out loads
  • Immediate frictional support at the face
  • Install with hand-held or mechanised equipment
  • Bolts can be post-grouted with Minova cement grouts or Minova’s Capcem cement capsules for extra load bearing capacity
  • Mesh pin improves productivity when installing mesh by reducing the number of holes to be drilled
  • Mesh pins can be post-grouted to stiffen support being used during installation
  • Mesh pins eliminate the incorrect driver
  • Manufactured in 34 mm, 40 mm and 47 mm diameters and various lengths from 600 mm to 3,000 mm

Advantages



Increased contact surface


Immediate frictional support


Can be post grouted

Mechanical Properties (Typical)

Mechanical Properties Strata Bolt 34 Strata Bolt 40 - Mesh Pin Strata Bolt 40 Strata Bolt 47
Bolt Diameter (mm) 34 40 39.8 47
Yield Strength (MPa) 520 520 460 460
Tensile Strength (MPa) 600 600 520 520
Tensile Force (MT) 12 13 15.8 18.3
Elongation 80 mm sample (%) 22-28 22-28 20 (minimum) 20 (minimum)
Mass per metre–(kg/m) 1.55 1.75 2.4 2.74

 

Plates

Minova manufactures a comprehensive range of specially designed plates for use with rock bolts and cable bolts.

Plates most typically used with friction bolts:

Plate Name Dimensions
Dome Plate

150 x 150 x 4mm-7mm
200 x 200 x 4 mm

Combi Plate

280 x 300 mm
240 x 300 mm

Crown Plate 150 x 150 x 5 mm

 

Drivers

Minova manufactures a full range of purpose designed Strata Bolt Drivers for use with hand held or mechanised bolting equipment.

Coatings

Strata Bolts are available in black or hot dip galvanised steel.

For more information download the strata bolt flyer or contact Minova.

Industry Sectors


Coal Mining


Hard Rock Mining

Common Uses


Rock Bolting


Roof Control

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