Self drilling anchor system is a type of ground anchor used to provide stability in soil or rock formations. For application in soil nailing, rock bolting, micro-pipling, tunneling, mining and infrastructure.
| Size | O.D
(mm) |
I.D
(mm) |
Sectional Area
(mm²） |
Ultimate Load
（kN） |
Yield Load
（kN） |
Agt | Weight
(kg/meter) |
|
| R51 | R51L-38 | 51.0 | 38.0 | 760 | 550 | 450 | ＞6% | 6.00 |
| R51L-36 | 51.0 | 36.0 | 970 | 550 | 450 | ＞10% | 7.60 | |
| R51N-36 | 51.0 | 36.0 | 970 | 800 | 630 | ＞6% | 7.60 | |
| R51N-33 | 51.0 | 33.0 | 1070 | 800 | 630 | ＞10% | 8.40 | |
| R51S-30 | 51.0 | 30.0 | 1160 | 930 | 730 | ＞10% | 9.10 | |
| Thread direction | Left hand | |||||||
| Thread standard | ISO 1720 | |||||||
| Thread size | Length(mm) | Out Diameter(mm) | Unit Weight(kg） |
| R51 | 140.0 | 63.0 | 1.4 |
| 200.0 | 63.0 | 2.0 | |
| Steel grade | As per request | ||
| Thread direction | Left hand | ||
| Thread standard | ISO 1720 | ||
| Hardness (HRC) | HRC25 ~ HRC30 | ||
| Features | All are designed with middle stop, O rings are availables as per request. | ||
| Size | SW (mm) | L (mm) | Unit Weight (kg) |
| Hexagonal Nut | |||
| R51 | 75 | 70 | 1.55 |
| Spherical Nut | |||
| R51 | 75 | 70 | 1.60 |
| Steel grade | As per request | ||
| Thread direction | Left hand | ||
| Thread standard | ISO 1720 | ||
| Hardness (HRC) | HRC25 ~ HRC30 | ||
| Features | All nuts are machined and with chamfered edges to suit both domed plates and solid plates. | ||
 |
EX | All steel cross bit for loose to medium dense ground formations. |
 |
ES | Hardened button bit for weak cemented soil/sands and weak fractured rock formations. |
 |
EC | Hardened arch bit for loose to dense soil or sand formations. |
 |
EY | Hardened three-cutters bit for weak cemented soil/sand and weak fractured rock formations. |
 |
EXX | TC cross bit for medium to strong fractured rock formations. |
 |
ESS | TC button bit for strong fractured rock formations. |
 |
ECC | TC arch bit for medium fractured rock formations. |
 |
EYY | TC three cutters bit for medium fractured rock formations. |
| Bit Matrix | ||||||||||||||
| Dia. | 42 | 51 | 76 | 90 | 100 | 115 | 130 | 150 | 175 | 220 | 250 | 280 | 300 | 350 |
| R51 | √ | √ | √ | √ | √ | √ | ||||||||
| Thread standard | ISO10208 / ISO 1720 / International standard |
| Thread direction | Left Hand / Right Hand |
| Hardness | HRA87 ~ HRA90 for TC bits, HRC48 ~ HRC55 for all steel bits |
| Size | Solid Plate | ||
| A x A x B (mm) | D (mm) | Weight (kg) | |
| R51 | 200 x 200 x 30 | 56 | 9.0 |
| 250 x 250 x 40 | 56 | 18.5 | |
| Note | Other dimensions are available upon request. | ||
| Size | Out Diameter (mm) | Unite Weight (kg) |
| R51 | 91 | 0.30 |
| Anchor Bolt Size | Anchor Bit Size | Length (mm) | Unit Weight (kg) |
| R51 | T76 | 65 | 1.00 |
