Tunnel Bolting Self Drilling Bit , 45mm R32 Concrete Anchor Drill Bit
R32 Thread Tunnel Bolting Self Drilling Anchor Bit
Description:
Anchor bits is used as a sacrificial consumable for drilling hole, Minetech provides two kinds of anchor bits, Tungsten carbide and steel hardened.
Thread type: R25, R32, R38, R51, T30, T40, T52, T73, T76, T103, T111, T127, T130 etc.
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
General guide for anchor bits diameters selection (for reference only):
| Thread | Bits diameter(mm) | Thread | Bits diameter(mm) |
| R25 | 42mm, 51mm, 76mm | T30 | 42mm, 46mm, 51mm, 76mm, 90mm |
| R32 | 45mm, 51mm, 76mm, 90mm, 100mm, 115mm | T40 | 76mm, 90mm, 100mm, 115mm |
| R38 | 64mm, 76mm, 90mm, 100mm, 110mm, 115mm, 130mm | T52 | 76mm, 90mm, 110mm, 115mm, 130mm, 150mm |
| R51 | 76mm, 90mm, 100mm, 110mm, 115mm, 130mm, 150mm | T73 | 115mm, 130mm, 175mm |
| T76 | 170mm, 220mm | T103 | 175mm, 220mm, 280mm |
| T111 | T127 | 200mm, 220mm |
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