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Bit Drill for Ground Anchor R25/51mm Self Drilling Rock Anchor for Tunnel Support
Bit Drill for Ground Anchor R25/51mm Self Drilling Rock Anchor for Tunnel Support
Bit Drill for Ground Anchor R25/51mm Self Drilling Rock Anchor for Tunnel Support
Bit Drill for Ground Anchor R25/51mm Self Drilling Rock Anchor for Tunnel Support
Bit Drill for Ground Anchor R25/51mm Self Drilling Rock Anchor for Tunnel Support
Bit Drill for Ground Anchor R25/51mm Self Drilling Rock Anchor for Tunnel Support
Specifications
Brand Name :
OED/OEM
Model Number :
R25/51
Certification :
ISO9001:2008
Place of Origin :
China
MOQ :
100pcs
Price :
Negotiable
Payment Terms :
L/C, , T/T
Supply Ability :
10000pcs per month
Delivery Time :
45 days
Packaging Details :
Wooden Box
Type :
Drill Bit
Processing Type: :
Casting
Application :
Self drilling anchor system
Thread :
R25
Diameter :
51mm
Hardness :
HRC48-HRC55
Thread direction :
Left hand
Description

Bit Drill for Ground Anchor R25/51mm Self Drilling Rock Anchor for Tunnel Support

Specifications of drilling bits R25/51mm

Thread:R25

Diameter:51mm

Left Hand

Hardness:HRC48-HRC55

Processing Type:Casting

Description:

The Self Drilling Anchor system is comprised of a hollow threaded anchor bar with a sacrificial drill bit that performs drilling, anchoring and grouting in a single operation. Self drilling anchor system is mainly used in slope stabilization, tunneling pre-support, foundations with micro piles etc projects.

Advantages and Characteristics as below:

1. No casings required, because anchor bars can be drilled into loose soils without needing casings to support the boreholes.

2. Fast drilling and installation, because drilling, installation and grouting are in a single operation.

3. Both rope threads and trapezoid threads are robust and ideal for rotary-percussive drilling and ensuring a high level of bond with the borehole gout.

4. The hollow core not only serves for flushing during drilling, but also for grouting after drilling.

5. Continuous threads ensure the bars can be cut and coupled at any point, or extended.

6. Different anchor bits are available for different ground conditions.

R thread anchor bar or called rock bolt, soil nail, which is a kind of threaded hollow bar, bar surface with an rope thread according to ISO 10208 & 1720. It was firstly invented by MAI on 1960S to solve the low construction speed on complicated underground works, nowadays; it is very popular all around the world.

Bits type:

Bit Drill for Ground Anchor R25/51mm Self Drilling Rock Anchor for Tunnel Support

Anchor bit diameter to choose:

Dia. 42 51 76 90 100 115 130 150 175 220 250 280 300 350
R25 √ √
R32 √ √ √ √
R38 √ √ √ √ √
R51 √ √ √ √ √ √
T76 √ √ √ √ √
T30 √ √
T40 √ √ √ √
T52 √ √ √ √ √ √
T73 √ √ √ √
T103 √ √ √ √ √ √
Thread standard ISO 10208 / ISO 1720/ Other international standards
Thread direction Left hand / Right hand
Hardness HRA 87 ~HRA90 for TC bits, HRC 48 ~HRC 55 for all steel bits.
Product tags

self drilling anchores rockbolts

,

anchor drill bit

,

self drilling anchor bolt
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Bit Drill for Ground Anchor R25/51mm Self Drilling Rock Anchor for Tunnel Support

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Product Detail
Brand Name :
OED/OEM
Model Number :
R25/51
Certification :
ISO9001:2008
Place of Origin :
China
MOQ :
100pcs
Price :
Negotiable
Contact Supplier
Bit Drill for Ground Anchor R25/51mm Self Drilling Rock Anchor for Tunnel Support
Bit Drill for Ground Anchor R25/51mm Self Drilling Rock Anchor for Tunnel Support
Bit Drill for Ground Anchor R25/51mm Self Drilling Rock Anchor for Tunnel Support

HUNAN GOLDEN GLOBE I AND E OED CO.,LTD.

Active Member
7 Years
hunan, zhuzhou
Since 1998
Business Type :
Manufacturer, Exporter
Main Products :
Rock Drilling Tools, Small Rock Drill Bits, Thread Button Bit
Total Annual :
8000000-12000000
Employee Number :
>100
Certification Level :
Active Member
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