Audited Supplier
R51
Gsg/ISO/GB
ISO 10208
Spray-Paint
Casting
Alloy Steel
Es/Ess Cross Drill Bit
42/51//76/90/100/110/115/130/150/160/180/200
Drilling
R Thread
TERNAL
Carton Box/Plywood Box
R25/R32/R38/R51/T30/T40/T53/T76/T103
China
84314320
Product Description
We are the Chinese Rock Bolt Manufacturer
Technical Data Sheet
Introduction to SDA
The self-drilling hollow anchor system performs drilling, anchoring and grouting in one step. It allows air and water to freely pass through the bar during drilling to remove debris and then allows the grout to be injected immediately after completely covering the entire bolt.
Features and Advantages
Main Components:
Self-drilling Anchor System Consists of:
Steel Hollow Bar
Steel Coupler
Steel Plate
Steel Nut
Sacrificical Drill Bit
Steel Hollow Bar
Steel Coupler
Steel Plate
Steel Nut
Sacrificical Drill Bit
Technical Data Sheet
Introduction to SDA
The self-drilling hollow anchor system performs drilling, anchoring and grouting in one step. It allows air and water to freely pass through the bar during drilling to remove debris and then allows the grout to be injected immediately after completely covering the entire bolt.
Features and Advantages
No predrilling
Rock at any depth
Can be installed in all soil types
Casing for lateral loads
Grout and bar are installed simultaneously
Only need rock drill & grout plant
| Drill Bit Selection | ||
| EX | Description | A machined or cast hardened cross dirll bit. |
| Suitable Conditions | A majority of applications for loose to medium dense ground conditions. | |
| EXX | Description | The tungsten carbide corss bit. |
| Suitable Conditions | Suitable for soft to medium fractured rock formations. | |
| ESF | Description | Cast and hardened hemispherical button drill bit. |
| Suitable Conditions | Suitable for silt, sand and gravel and soft rock formations. | |
| ESD | Description | Drop center hardened button bit. |
| Suitable Conditions | For increased drilling efficiency of silt, sand and gravel with small boulders or soft rock. | |
| ESSF | Description | Tungsten carbide hemispherical button drill bit. |
| Suitable Conditions | With flat drill face for a large range of fractured ground, broken and medium rock formations. | |
| EW | Description | Clay drill bit. |
| Suitable Conditions | Cohesive mixed soils without obstructions. | |
| EC | Description | Hardened tri-cresent/arching drill bit. |
| Suitable Conditions | Suitable for unconsolidated soil with small boulders. | |
| ECC | Description | Tungsten carbide tri-cresent/arching bit. |
| Suitable Conditions | For a range of soft to medium rock formations. | |
| EY | Description | Hardened tri-blade drill bit with a drop center buttons. |
| Suitable Conditions | Offers an increased cutting performance in fills and chalk. | |
| EYY | Description | TC drop centre bit with hardened tri-blade bit. |
| Suitable Conditions | Suitable for soft to medium cemented ground conditions including fills and chalk. | |
| Bit Type | Drill Bit Diameters | |||||||||
| R25 | R32 | R38 | R51 | T30 | T40 | T52 | T73 | T76 | T103 | |
| EX | φ42 φ51 | φ51 φ76 φ90 | φ76 φ90 φ100 | φ90 φ115 | φ42 φ46 φ51 φ76 | φ76 φ90 φ100 φ115 | φ115 | φ130 φ170 | φ130 φ170 | - |
| EXX | φ42 φ51 | φ51 φ76 φ90 | φ76 φ90 φ100 | φ90 φ100 φ115 φ130 φ150 | φ42 φ46 φ51 | φ76 φ90 φ100 φ115 φ130 φ150 | φ115 φ130 φ150 | φ130 φ150 φ200 | φ130 φ150 φ200 | φ175 |
| ESF | φ42 φ51 | φ51 φ76 | φ76 φ90 φ100 | φ90 φ110 | φ42 φ46 φ51 | φ76 φ90 φ100 φ115 φ130 | - | - | - | - |
| ESD | - | - | φ115 | φ115 | - | - | φ115 | φ130 | φ130 φ170 | - |
| ESSF | φ42 φ51 | φ51 φ76 φ90 | φ76 φ90 φ100 φ115 | φ90 φ100 φ115 φ130 φ150 | φ46 φ51 | φ70 φ76 φ90 φ100 φ115 φ130 | φ100 φ115 | φ110 φ130 | φ120 φ130 φ150 | φ175 |
| EW | - | φ76 φ90 | φ76 φ90 φ100 φ110 φ115 φ130 φ150 | φ130 φ150 φ175 | φ76 φ90 | φ90 φ130 φ150 | φ130 φ150 | φ130 φ150 | φ130 φ150 | φ220 φ280 |
| EC | - | φ51 φ76 | φ76 φ90 φ115 | φ115 | φ51 | φ90 φ115 | - | - | - | - |
| ECC | - | φ51 φ76 | φ76 φ90 φ110 φ115 | φ115 | φ51 | φ90 φ100 φ115 | - | - | - | - |
| EY | - | φ76 φ90 | φ76 φ90 φ130 | φ115 | - | - | - | - | - | - |
| EYY | - | φ76 φ90 | φ76 φ90 φ130 | φ115 | - | - | - | - | - | - |
