Ground friction bolt

1. Rollformed from high strength steel strip 2. Different diameter of friction bolt available 3. Different surface treatments.

Brief Introduction:

1. Friction Bolt is a kind of slotted steel tube with one end tappered,

     the other end has a welded ring flange to hold the bearing plates.

2. Friction Bolt is inserted into a hole slightly smaller in diameter

     than the tube, using a simple driver tool fitted to the drill.

3. As bolt enters, its diameter is compressed and the slot partially

    close. This exerts radial forces along the length of contact with

    the rock, providing the friction which holds the rock together.

4. The driving force of the drill actively loads the bearing plate

     against the rock.

Type and Features

Technical Data / Types	TRMSS33	TRMSS39	TRMSS46
Recommended Borehole	30 - 32mm	35 - 38mm	41 - 45mm
Outside tube Diameter	33mm	39mm	46mm
Breaking Capacity  Minimum                                Typical	80 KN	105 KN	130 KN
	100 KN	130 KN	180 KN
Typical Elongation	20-32%	20-32%	20-32%
Tube Thickness	2.3-2.5mm	2.3-2.5mm	3.0-3.2mm
Material	Q235/Q345	Q235/Q345	Q235/Q345
Surface Treatment	Black/Paint/HDG	Black/Paint/HDG	Black/Paint/HDG
Length	0.6 - 2.1m	0.9 - 3.0m	0.9 - 4.0m
Installation	Hand install/Mechanized	Hand install/Mechanized	Mechanized
Dome Plates	125x125x4mm	125x125x4mm / 150x150x4mm	150x150x4mm
Combi Plate	300x280	300x280	300x280
Mesh	100x100 Dia5.6 BLK/HDG	100x100 Dia5.6 BLK/HDG	100x100 Dia5.6 BLK/HDG

Our Friction Bolt:

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