R Thread Self Drilling Anchor Bolt

Description:
Self drilling anchor bolt adopts wave-thread hollow bar, which has great anchoring effect and can be cut according to demands. Sinorock also produces large-diameter self drilling anchor bar by adopting advanced equipment and technology.

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Introduction

Self drilling anchor bolt is composed by hollow anchor bolt, anchor nut, anchor plate, anchor coupler, drill bit, centralizer, and the hollow anchor bars can be cut and lengthened by coupling on request.

Functions:
Self drilling anchor system is an advanced system which can ensure the anchoring effect for complex ground conditions. It can be integrated with the functions of drilling, grouting and anchoring.

Conditions:
• Tunneling
• Mining
• Slope Stabilization
• Foundation Support

Features and advantages:
1. Safe, reliable, and time saving.
2. Simple installation & operation.
3. Choice of drill bits for different ground conditions.
4. Grouting works synchronize with drilling or after drilling. Grout can fill fractures effectively.
5. Anchor bars can be cut and lengthened on request, applying to narrow spaces.
6. It provides higher bonding stress than smooth steel pipe depending on continuous wave thread.
  • R25
  • R32
  • R38
  • R51
Technical Data:
Hollow Anchor Bar
Size Outer Dia.
(mm)
Inner Dia.
(mm)
Ultimate Load
(kN)
Yield Load
(kN)
Weight
(Kg/m)
SER25/12 25 12 200 150 2.35
Coupler
Size Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SSR25 36 150 0.66 With sealing structure
SER25 36 150 0.66 Without sealing structure
Hex Nut
Size Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Hardness
(HRC)
SSR25 41 30 0.20 25-30
Domed Plate
Size Dimensions
(mm)
Thickness
(mm)
Hole Dia.
(mm)
Weight
(Kg/pc)
SER25 150×150 8 30 1.40
150×150 5 28 0.85
200×200 8 32 3.20
Drill Bit
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
Drill Bit Adapter
Size Anchor Bar Thread Drill Bit Thread Length
(mm)
Weight
(Kg/pc)
SSR25/R32 R25 R32 50 0.10
Technical Data:
Hollow Anchor Bar
Size Outer Dia.
(mm)
Inner Dia.
(mm)
Ultimate Load
(kN)
Yield Load
(kN)
Weight
(Kg/m)
SSR32/20 32 20 210 160 2.83
SSR32/17 32 17 280 230 3.50
SSR32/15 32 15 360 280 4.00
SER32/21 32 21 210 160 2.60
SER32/19 32 19 280 230 2.95
SER32/17 32 17 360 280 3.50
SER32/15 32 15 405 320 4.00
SCR32/21 32 21 250 190 2.60
SCR32/20 32 20 280 230 2.83
SCR32/17.5 32 17.5 360 280 3.40
Coupler
Size Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SSR32 42 145 0.79 With sealing structure
42 160 0.86
42 190 1.00
SER32 42 145 0.77 Without sealing structure
42 160 0.84
42 190 1.00
Hex Nut
Size Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Hardness
(HRC)
SSR32 46 45 0.37 25-30
46 55 0.46
46 60 0.47
Hemispherical Nut
Size Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Hardness
(HRC)
SSR32 46 45 0.38 25-30
Domed Plate
Size Dimensions
(mm)
Thickness
(mm)
Hole Dia.
(mm)
Weight
(Kg/pc)
SER32 150×150 8 35 1.30
150×150 5 35 0.85
150×150 6 35 1.00
150×150 10 35 1.70
175×175 8 35 1.90
200×200 8 35 2.60
200×200 10 35 3.52
200×200 12 35 2.94
Flat Plate
Size Dimensions
(mm)
Thickness
(mm)
Hole Dia.
(mm)
Weight
(Kg/pc)
SER32 95×95 25 35 1.60
120×120 30 35 3.20
150×150 8 35 1.30
200×200 10 35 3.06
Centralizer
Size Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
SER32 72 30 0.27
Drill Bit
Size Outer Dia.
(mm)
Weight
(Kg/pc)
Application Range (Advice)
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
Drill Bit Adapter
Size Anchor Bar Thread Drill Bit Thread Length
(mm)
Weight
(Kg/pc)
SSR32/R38 R32 R38 50 0.13
SSR32/R51 R32 R51 68 0.62
SSR32/T40 R32 T40 50 0.18
Technical Data:
Hollow Anchor Bar
Size Outer Dia.
(mm)
Inner Dia.
(mm)
Ultimate Load
(kN)
Yield Load
(kN)
Weight
(Kg/m)
SSR38/20 38 20 500 400 5.50
SER38/22 38 22 500 400 4.95
SER38/18 38 18 550 430 6.00
SCR38/22.5 38 22.5 500 400 4.80
SCR38/21 38 21 500 400 5.25
Coupler
Size Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SSR38 51 180 1.33 With sealing structure
51 200 1.50
51 220 1.67
SER38 51 180 1.38 Without sealing structure
51 200 1.55
51 220 1.68
Hex Nut
Size Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Hardness
(HRC)
SSR38 50 60 1.47 25-30
Hemispherical Nut
Size Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Hardness
(HRC)
SSR38 52 60 0.61 25-30
Domed Plate
Size Dimensions
(mm)
Thickness
(mm)
Hole Dia.
(mm)
Weight
(Kg/pc)
SER38 150×150 8 41 3.60
200×200 12 41 1.38
Flat Plate
Size Dimensions
(mm)
Thickness
(mm)
Hole Dia.
(mm)
Weight
(Kg/pc)
SER38 140×140 35 41 5.00
150×150 25 41 4.10
200×200 12 41 3.67
Centralizer
Size Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
SER38 78 30 0.28
Drill Bit
Size Outer Dia.
(mm)
Weight
(Kg/pc)
Application Range (Advice)
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
Drill Bit Adapter
Size Anchor Bar Thread Drill Bit Thread Length
(mm)
Weight
(Kg/pc)
SSR38/R51 R38 R51 68 0.43
Technical Data:
Hollow Anchor Bar
Size Outer Dia.
(mm)
Inner Dia.
(mm)
Ultimate Load
(kN)
Yield Load
(kN)
Weight
(Kg/m)
SSR51/34 51 34 580 450 6.95
SSR51/29 51 29 800 630 9.00
SER51/36 51 36 550 430 6.15
SER51/35 51 35 580 450 6.40
SER51/31 51 31 800 630 8.20
SCR51/33 51 33 800 630 8.00
Coupler
Size Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SSR51 63 200 1.85 With sealing structure
63 220 2.00
SER51 63 200 1.84 With sealing structure
63 220 2.13
Hex Nut
Size Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Hardness
(HRC)
SSR51 75 70 1.53 25-30
75 80 1.84
Hemispherical Nut
Size Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Hardness
(HRC)
SSR51 75 70 1.60 25-30
75 80 1.92 30-35
Domed Plate
Size Dimensions
(mm)
Thickness
(mm)
Hole Dia.
(mm)
Weight
(Kg/pc)
SER51 200×200 15 55 4.70
Flat Plate
Size Dimensions
(mm)
Thickness
(mm)
Hole Dia.
(mm)
Weight
(Kg/pc)
SER51 150×150 40 56 6.20
180×180 45 56 10.50
200×200 30 60 8.72
250×250 40 60 18.90
Centralizer
Size Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
SER51 91 30 0.30
Drill Bit
Size Outer Dia.
(mm)
Weight
(Kg/pc)
Application Range (Advice)
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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