Friction Bolts

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