Friction bolt

Maxdrill offers a full range of anchor bolts to meet the demands of all types of operating conditions - choose the solution that works best for you.

Dimensions		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
Physical Properties
Yield strength		Min.345 Mpa (70KN) Typical 445 Mpa (95KN)	Min.345 Mpa (85KN) Typical 445 Mpa (110KN)	Min.345 Mpa (120KN) Typical 445 Mpa (150KN)
Tube ultimate tensile strength		Min.470 Mpa (100KN) Typical 530 Mpa (115KN)	Min.470 Mpa (115KN) Typical 530 Mpa (130KN)	Min.470 Mpa (160KN) Typical 530 Mpa (180KN)
Mass per meter		1.67Kgs	1.92Kgs	2.71Kgs
Cross section area		212mm²	245mm²	345mm²
Hole diameter range		30‑32mm	35‑38mm	43‑45.5mm
Technical Data
Recommended nominal bit size		31‑33mm	35‑38mm	41‑45mm
Typical breaking capacity		107KN	124KN	178KN
Minimum breaking capacity		71KN	89KN	133KN
Recommended initial anchorage		3‑6Tons (27‑53KN)	3‑6Tons (27‑53KN)	6‑10Tons (53‑89KN)
Ultimate axial strain		Typical 21% (Thickness<16mm)	Typical 21% (Thickness<16mm)	Typical 21% (Thickness<16mm)