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Home > Product > Self Drilling Anchor Bolt System > R Thread Anchor System > Self-Drilling Anchor Bolt (R thread)
Self-Drilling Anchor Bolt (R thread)
R thread self drilling anchor bolt has sizes include R25, R32, R38, R51. It is suitable for broken rock and loose soil.
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Description
Introduction:

Self drilling anchor bolt combines drilling, grouting and anchoring together. It ensures the anchoring effect in complex ground conditions. 
It’s safe, reliable and efficient.
 
Application:

 
1. R thread self drilling anchor bolt is suitable for broken rock, loose soil and conditions which are difficult to drill holes, such as fracture zones, decayed rock, gravel, sandy gravel, backfill ground.
2. Used for permanent support for tunneling.
3. In slope stabilization, rock bolts and soil nails can be used to maintain and strengthen soil and rock.
4. Used for micro pile reinforcement. Micro pile can transmit structural load to foundation, and then limit the deformation of buildings.
5. Drill bits can be used for differently according to the rock conditions.
 
Features:

1. Casing free in the operation. 
Anchor bar is also a drill pipe which is convenient and time-saving.
2. Drilling and grouting can be done simultaneously. With good grouting spread radius and reliable anchoring quality, fractures can be filled effectively.
3. The anchor bar with standard full thread can be cut according to your requirement. The cut anchor bars can be connected by couplers. It’s suitable in narrow work space.
4. Due to the continuous R-thread and 
T-thread, self drilling anchor bolt has higher bonding stress.
Hex Nut        Spherical Nut     Centralizer
                 Hex Nut                                       Spherical Nut                                Centralizer  
 
Plate           Coupling   Drill Bit
                   Plate                                               Coupling                                      Drill Bit
 
                                                                             
Size Outer Dia.
(mm)
Ultimate Load
(kN)
Yield Load
(kN)
Weight
(Kg/m)
SER25N 25 200 150 2.35
SSR32L 32 210 160 2.83
SSR32N 32 280 230 3.50
SSR32S 32 360 280 4.00
SER32L 32 210 160 2.60
SER32N 32 280 230 2.95
SER32S 32 360 280 3.50
SER32S1 32 405 320 4.00
SCR32L1 32 250 190 2.60
SCR32N1 32 280 230 2.83
SSR38N 38 500 400 5.50
SER38N 38 500 400 4.95
SER38S 38 550 450 5.90
SSR51L 51 580 450 6.75
SSR51N 51 800 630 9.00
SER51L 51 550 450 6.20
SER51L1 51 660 540 6.75
SER51N 51 800 630 8.20
SER51S 51 925 740 9.25



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