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86-379-64386676
 
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Drill Bit
R thread drill bit includes X, EX, XX, EXX, EY, EYY, EC, ECC, etc.
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Description
Introduction:  

Drill bit is used for drilling, which is installed with anchor bars. As there is no need to pull out of the anchor bar, drill bit can be used for only one time. After the anchor bars are installed, drill bits will be left in the borehole. Sinorock provides a full range of drill bits to meet customers' requirements. Drill bit is widely used in tunnel pre-support, soil nailing, slope stabilization, building foundation, etc.

Characteristic:

1. It's suitable for various conditions, such as tunnel pre-support, soil nailing, slope stabilization, building foundation.
2. Easy installation.  
3. Different bits for kinds of rock formations, including cross-cut drill bit, button drill bit, tungsten carbide cross-cut drill bit, tungsten carbide button drill bit, clay bit, etc.

Main selection criteria for MAI SDA drill bits are:

1. Service life of the drill bits should be at least equal to the anchor bar.
2. Its performance design depends on different ground formations encountered.
3. Diameter depends on geotechnical conditions and design requirements. 


EYYECECC
                          EYY                                             EC                                          ECC                        
ESFESSFESSD
                         ESF                                           ESSF                                           ESSD                
EXXEYX
                        EXX                                             EY                                             X                                
Clay BitESDEX
   
                 Clay Bit                                        ESD                                            EX

 
Size Outer Dia.
(mm)
Weight
(Kg/pc)
Application Range (Advice)
EX Sand, fills, gravel
SSR25/42 42 0.25
SSR25/51 51 0.31
EXX Softer sedimentary rocks such as marls, mudstones, siltstone
SSR25/42 42 0.29
ES-F Gravel, soft rock
SSR25/42 42 0.29
SSR25/51 57.5 0.33
ESS-F Weathered rock, stone walls, rubble
SSR25/42 42 0.30
SSR25/51 51 0.53
EYY Competent ground, strong rock
SSR25/51 51 0.36
EX Sand, fills, gravel
SSR32/51 51 0.31
51 0.35
SSR32/76 76 0.79
EX(Venturi)
SSR32/64 64 0.57
SSR32/76 76 0.80
EXX Softer sedimentary rocks such as marls, mudstones, siltstone
SSR32/42 42 0.25
SSR32/51 51 0.40
SSR32/64 64 0.71
SSR32/76 76 1.14
EXX(Venturi)
SSR32/76 76 1.10
Clay Bit Clay, soft soil, marls, loose sand or gravel
SSR32/76 76 0.54
SSR32/90 90 0.68
SSR32/100 100 1.06
SSR32/110 110 1.30
ES-F Gravel, soft rock
SSR32/42 42 0.24
SSR32/51 51 0.45
SSR32/64 64 0.70
SSR32/76 76 1.00
ESS-F Weathered rock, stone walls, rubble
SSR32/51 51 0.45
SSR32/64 64 0.72
SSR32/76 76 1.22
EYY Competent ground, strong rock
SSR32/51 51 0.40
SSR32/76 76 0.74
EY Chalk, gravel
SSR32/51 51 0.34
SSR32/76 76 0.71
EC Chalks, marls, fills, competent ground
SSR32/51 51 0.33
ECC Chalks, marls, fills, competent ground
SSR32/51 51 0.37
EX Sand, fills, gravel
SSR38/76 76 1.04
SSR38/90 90 1.27
SSR38/100 100 1.42
EX(Venturi)
SSR38/76 76 0.81
SSR38/90 90 1.20
EXX   Softer sedimentary rocks such as marls, mudstones, siltstone
SSR38/76 76 0.95
SSR38/90 90 2.05
SSR38/100 100 2.31
SSR38/115 115 2.66
SSR38/130 130 5.00
EXX(Venturi) 
SSR38/56 56 0.68
SSR38/76 76 1.28
SSR38/90 90 2.16
Clay Bit   Clay, soft soil, marls, loose sand or gravel
SSR38/90 90 1.00
SSR38/100 100 1.16
SSR38/110 110 1.15
SSR38/130 130 1.40
SSR38/150 150 2.40
ES-F   Gravel, soft rock
SSR38/76 76 1.07
SSR38/90 90 1.31
SSR38/115 115 2.50
ESS-F   Weathered rock, stone walls, rubble
SSR38/76 76 1.31
SSR38/90 90 2.33
SSR38/115 115 3.75
EYY   Competent ground, strong rock
SSR38/76 76 1.10
SSR38/90 90 1.36
EY   Competent ground, strong rock
SSR38/76 76 0.87
SSR38/90 90 1.20
EC   Chalks, marls, fills, competent ground
SSR38/76 76 1.10
ECC   Chalks, marls, fills, competent ground
SSR38/76 76 1.10
XX   Sand, clay, fills, gravel
SSR38/110 110 1.40
SSR38/130 130 1.52
SSR38/150 150 1.85
ESS-D Weathered rock, stone walls, rubble
SSR38/100 100 2.16
SSR38/115 115 2.70
EX Sand, fills, gravel
SSR51/100 100 1.67
SSR51/110 110 2.05
SSR51/115 115 2.06
SSR51/130 130 3.94
SSR51/150 150 4.00
SSR51/90 90 1.62
EXX Softer sedimentary rocks such as marls, mudstones, siltstone
SSR51/76 76 1.40
SSR51/90 90 1.98
SSR51/100 100 2.23
SSR51/110 110 3.20
SSR51/115 115 3.08
SSR51/130 130 4.40
SSR51/150 150 6.12
EXX(Venturi)
SSR51/115 115 2.87
SSR51/140 140 6.00
Clay Bit Clay, soft soil, marls, loose sand or gravel
SSR51/76 76 0.95
SSR51/90 90 1.00
SSR51/115 115 1.38
SSR51/130 130 2.20
SSR51/150 150 2.56
SSR51/175 175 2.60
ES-F Gravel, soft rock
SSR51/76 76 0.81
SSR51/100 100 1.50
SSR51/115 115 2.00
SSR51/130 130 2.92
ESS-F Weathered rock, stone walls, rubble
SSR51/76 76 1.52
SSR51/100 100 2.60
SSR51/110 110 2.90
SSR51/115 115 3.85
SSR51/130 130 4.30
SSR51/150 150 6.44
EY Chalk, gravel
SSR51/76 76 1.03
EC Chalks, marls, fills, competent ground
SSR51/115 115 1.97
XX Sand, clay, fills, gravel
SSR51/130 130 2.10
SSR51/150 150 2.30
SSR51/170 170 2.70
SSR51/200 200 2.90
ES-D Gravel, soft rock
SSR51/115 115 2.13
ESS-D Weathered rock, stone walls, rubble
SSR51/115 115 2.10


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