Anchor Self Drilling Rock Hollow Core Diamond Drill Bits R38 TC Drop Center Bit EYY
OED self drilling anchor system is a bolting solution for difficult ground and rock conditions. The system enables drilling and grouting in one operation, making much saving in jobsite and project time.
Specifications of our SDA drilling bits R38/90mm
Thread:R38
Diameter:90mm
Tunnelling Ground engineering
1. Face stabilization
2. Radial systematic anchoring
3. Foundation for avalanche protect
4. Stabilization of tunnel portals
5. Spilling
6. Root piling
Bits type:
EX: Hardened cross bit for loose to medium dense ground conditions
ES: Hardened button bit for unconsolidated rock with boulders
EC: Hardened arch bit for unconsolidated soil with small boulders
EY: Hardened 3 cutters bit for loose to medium dense ground conditions
EXX: T.C cross bit for soft to medium rock formations
ESS: Button bit with T.C inserts for medium rock formations
ECC: T.C arch bit for soft to medium rock formations
EYY: T.C 3 cutters bit for soft to medium rock formations
Clay bits: Casted clay bit for Soft clay and soil
Anchor bit diameter to choose:
Dia. | 42 | 51 | 76 | 90 | 100 | 115 | 130 | 150 | 175 | 220 | 250 | 280 | 300 | 350 |
R25 | √ | √ | ||||||||||||
R32 | √ | √ | √ | √ | ||||||||||
R38 | √ | √ | √ | √ | √ | |||||||||
R51 | √ | √ | √ | √ | √ | √ | ||||||||
T76 | √ | √ | √ | √ | √ | |||||||||
T30 | √ | √ | ||||||||||||
T40 | √ | √ | √ | √ | ||||||||||
T52 | √ | √ | √ | √ | √ | √ | ||||||||
T73 | √ | √ | √ | √ | ||||||||||
T103 | √ | √ | √ | √ | √ | √ | ||||||||
Thread standard | ISO 10208 / ISO 1720/ Other international standards | |||||||||||||
Thread direction | Left hand / Right hand | |||||||||||||
Hardness | HRA 87 ~HRA90 for TC bits, HRC 48 ~HRC 55 for all steel bits. |
Related anchors bolts:
Types | Outer Diameter | Average Internal Diameter | Effective External Diameter |
mm | mm | mm |
R25N | 25 | 14 | 23 |
R32N | 32 | 18.5 | 29.1 |
R32S | 32 | 15 | 29.1 |
R38N | 38 | 19 | 35.7 |
R51L | 51 | 36 | 47.8 |
R51N | 51 | 33 | 47.8 |
T76N | 76 | 51 | 76 |
T76S | 76 | 45 | 76 |
Length: 1m, 1.5m, 2m, 2.5m, 3m, 3.5m, 4m, 4.5m, 5m, 5.5m, 6m |
Packaging & Shipping
1. Packing details : Carton box and Wooden box .
2. Handling time for an order
Based on order quantity, normally it takes 15-30 days for production.
Only 2 or 3 days if we have stock on your request size.
3. Shipping way
Sample order: We suggest Express like DHL/UPS/TNT/FEDEX/EMS or by air.
Bulk order: We suggest by airway or by sea shipment .