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Self drilling anchor bit

Product name:T108-138mm self drilling anchor bits
Diameter:138mm
Thread Type:T108
Length:155mm
Carbide Dimension:45mm×7.5mm×8.5mm
Weight:11.5kg
Flushing Holes: 1 on front,2 on side
Skirt Design: Standard/Normal
Carbide Brand and Grade :YK15.6, YK20,YG8C,YG9C,YG10C,YG11C
Steel grade :42CrMo,40Cr,Q26(35CrNiMoVA)

Key words：

Rock Bolt

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Product Details

Description

HENGLONG’s hollow steel self-drilling anchor solutions are designed to solve the problem of keeping boreholes open in unconsolidated or fractured ground. These SDA systems are suitable for simultaneous drilling and grouting in many tunnelling, mining, or ground engineering applications. Removing the need for borehole casting and combining drilling, bolt installation and grouting in one process greatly increases installation speed and efficiency.
The main feature of the HENGLONG Self-Drilling Anchor (SDA) system is the application of a single-use drill bit in combination with the rock bolt being used as a drill steel. Thus, the rock bolt is connected to the hydraulic rock drill by an adapter device and installed in the way a conventional borehole is drilled.
HENGLONG can produce various self-drilling anchor drill bits, mainly including EX,EXX,ES,ESS,EC,ECC,EY,EYY etc

Performance

We are the tapping rod manufacturer,it is our featured product,then we can product high quality,competitive price with best service.

Application

Slope stabilization
Self-Drilling Anchors are very suitable for weathered or un-consolidated rock stabilization. This technique is a more superior form of stabilization because the SDA technique is a relatively easy and fast method of installation compared to the outdated methods.
Foundations with micro piles
SDAs can be used like monopoles and micropile types because these are drilled piles composed of steel reinforcement with injected grout. These anchors are used like micropile type to stabilize the ground and related foundation problems. These anchors are suitable for tension and compression loads at varying ground conditions.
Tunneling
Self-drilling anchors are most suitable for the stabilization of tunnel strengthening works. Mostly for the soft rock and overburden soil conditions, the SDA’s are apt for rooftop protection.

Specification

NO.	Bit Type	thread		Out Dia. mm	Weight kg	Hardness HRC	Steel Type
NO.	Bit Type	Spec	L/R hand	Out Dia. mm	Weight kg	Hardness HRC	Steel Type
1	EXX	R32	L/R	45	0.38	87-90(Alloy)	EN10083-1=4140=42CrMo
2		T30		45	0.37
3		R32		51	0.42
4		T30		51	0.42
5		R32		76	1.22
6		R38			1.27
7		T40			1.27
8		T40		90	2.00
9		T40		100	2.20
10		R51		110	3.20
11		R51		115	3.50
12		T73		130	4.10
13		T76		130	3.65
14		T76		150	6.30
15		T103		175	6.96
16		T108		138	11.5

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QUALITY INSPECTION PROCESS

Product quality is one of the core links in the development and growth of Yanggu Henglong Engineering Co., Ltd. Our company has strict internal and external inspection processes to ensure the quality of our products. Our inspection process for our products is as follows.

Rock Bolt