Friction Bolts

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Maxdrill has developed its friction bolts which are mainly used as the simple and cost-effective form of ground support. Friction bolts have become available in mining and tunneling for decades.

Highlights

Made of high-tensile steel;
Parts and accessories are provided;
Processed with Hot-dip galvanizing technology;
The bolt as a whole can provide ground support and improvement in rock stability.

Applications

Mine roof and rib support
Pillars
Water tunnels
Shaft walls
Mine tunnels
Underground storage caverns

Road tunnels
Pipe and ventilation ducts
Conveyor Belts
Wire roller
Excavation slope
Highway cuts

Specifications

Model		FB-33	FB-39	FB-47
Bolt Diameter	A	33mm	39mm	47mm
Bolt Length	B	600-3000mm	600-3000mm	600-3000mm
Taper End Diameter	C	28mm	30mm	38mm
Taper Slot Wide	D	2mm	2mm	2mm
Taper Length	E	60mm	65mm	65mm
Bolt Slot Wide	F	12mm	17mm	25mm
Ring Location	G	3mm	3mm	8mm
Material Guage	H	2.0-2.5mm	2.0-2.5mm	2.5-3.2mm
Ring Wire Guage	I	6mm	6mm	8mm
Ring Open Gap	J	5.0-6.0mm	5.0-6.0mm	6.0-7.0mm