Friction bolts (Split sets)

Product Description

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Product Description

The friction bolts 'splitsets'are made from high tensile (SUPRAFORM MC 420 or equivarelent) high graded steel
that is roll-formed into a tubular section containing a continuous longitudinal opening along the length of the tube. 

An 8mm steel ring that is matched with 47mm Dia. split set,  is fixed to the collar end (5mm from the edge) of the tube and when the Splitset is installed into the recommended drilled hole size together with the desire bearing plate it establishes a compressive force against the rock. The tapered end of the friction stabiliser enables easy insertion into the drilled hole. The compression of the tubular shape of the Splitset into the recommended smaller diameter hole generates a load transfer from the steel to the rock. 

The tubular shape of the bolt enables increased contact of the steel against the rock generating radial pressure and creating frictional resistance to the pull-out load of the tube from the hole. 

Norminal size: 33mm, 39mm, 46mm and 47mm diameter

Dimensions:

Type

SS33

SS39

SS46

Outer Dia (mm)

33

39

46

Wall Thick (mm)

2'2.5

2'2.5

2.5'3.0

Weight (kg/m)

1.68

1.96

2.8

Bearing Plate (mm)

150 x 150 x 4

150 x 150 x 4

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150 x 150 x 4

Borehole Dia (mm)

30'32

36'38

43'45

Bolt Length (m)

0.9'2.4

0.9'3.0

0.9'3.7

Min Yield Strength (kN)

80

90

120

Min Tensile Strength (kN)

100

115

165

Elongation

'16%

'16%

'16%

Typical Anchorage (kN min.)

20

20

20

 * Black or hot dip galvanized split set are available to meet different mining environmental conditions.

Package and delivery:

 

Contact us to discuss your requirements of Bolt Pull Test. Our experienced sales team can help you identify the options that best suit your needs.