R25 Self-Drilling Anchor Systems

Self drilling anchor system is a type of ground anchor used to provide stability in soil or rock formations. For application in soil nailing, rock bolting, micro-pipling, tunneling, mining and infrastructure.

Description

R25 Self-Drilling Anchor Bolt

Size		O.D (mm)	I.D (mm)	Sectional Area (mm²）	Ultimate Load （kN）	Yield Load （kN）	Agt	Weight (kg/meter)
R25	R25N-14	25.0	14.0	290	200	150	＞10%	2.30
Thread direction		Left hand
Thread standard		ISO 10208

R25 Self-Drilling Anchor Coupler

Thread size	Length(mm)	Out Diameter(mm)	Unit Weight(kg）
R25	150.0	36.0	0.6
Steel grade	As per request
Thread direction	Left hand
Thread standard	ISO 10208
Hardness (HRC)	HRC25 ~ HRC30
Features	All are designed with middle stop, O rings are availables as per request.

R25 Self-Drilling Anchor Nuts

Size	SW (mm)	L (mm)	Unit Weight (kg)
Hexagonal Nut
R25	41	41	0.30
Steel grade	As per request
Thread direction	Left hand
Thread standard	ISO 10208
Hardness (HRC)	HRC25 ~ HRC30
Features	All nuts are machined and with chamfered edges to suit both domed plates and solid plates.

Self-Drilling Anchor Bits

	EX	All steel cross bit for loose to medium dense ground formations.
	ES	Hardened button bit for weak cemented soil/sands and weak fractured rock formations.
	EC	Hardened arch bit for loose to dense soil or sand formations.
	EY	Hardened three-cutters bit for weak cemented soil/sand and weak fractured rock formations.
	EXX	TC cross bit for medium to strong fractured rock formations.
	ESS	TC button bit for strong fractured rock formations.
	ECC	TC arch bit for medium fractured rock formations.
	EYY	TC three cutters bit for medium fractured rock formations.

Bit Matrix
Dia.	42	51	76	90	100	115	130	150	175	220	250	280	300	350
R25	√	√

Thread standard	ISO10208 / ISO 1720 / International standard
Thread direction	Left Hand / Right Hand
Hardness	HRA87 ~ HRA90 for TC bits, HRC48 ~ HRC55 for all steel bits

Self-Drilling Anchor Plate

Size	Domed Plate
Size	A x A x B (mm)	D (mm)	Weight (kg)
R25	150 x 150 x 8	30	1.4
Note	Other dimensions are available upon request.

Self-Drilling Anchor Adapter

Anchor Bolt Size	Anchor Bit Size	Length (mm)	Unit Weight (kg)
R25	R32	50	0.10

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