Casing Drilling System Ring bit

Short Description:

Product Description Odex Casing Drilling System SOD Symmetric casing rings bit For small-hole sizes, Prodemo produces the ODEX Eccentric Overburden Drilling System, starting with the ODEX90 to suit 114mm O.D. casings. This two-piece system comprises the shanked bit holder and the eccentric pilot bit that is secured in the bit holder by a double interlocking pin. This is easily removed to allow for bit are sharpening or replacement. Prodemo ODEX overburden drilling systems are widely used in a...


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Product Description
Odex Casing Drilling System SOD Symmetric casing rings bit

For small-hole sizes, Prodemo produces the ODEX Eccentric Overburden Drilling System, starting with the ODEX90 to suit 114mm O.D. casings. This two-piece system comprises the shanked bit holder and the eccentric pilot bit that is secured in the bit holder by a double interlocking pin. This is easily removed to allow for bit are sharpening or replacement. Prodemo ODEX overburden drilling systems are widely used in a variety of applications from well drilling and minipilling to rock anchoring and site investigation.

Application Range:

It is suitable for drilling water wells , geothermal wells , short mircopiles ,medium mini-type grouting hole of building , dam and harbour project .
1. When drilling starts , the reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill bit assembly
2. When the required depth is reached , rotation is reversed carefully, whereupon the reamer swings in , allowing the drill bit assembly to be pulled up through the casing.
3. Casing tubes that are to be left in the drill hole should be sealed at the bottom of the hole by means of cement grout or some other sealing agent.
4. Drilling continues to the desired depth in the bedrock using a conventional drilling.

How to order?
Casing Tube Out Diameter & Inner Diameter + Reamer Bit Diameter + Minimal Casing Shoe Inner Diameter + Hammer Shank Style

Casing Tube Casing Tube Reamed Dia(mm) Casing Shoe Polit bit Hammer Drill Pipe
OD(mm) ID(mm) ID(mm) Dia(mm) Type (mm)
108 95 118 80 70 DHD3.5/QL30 76
114 101 128 90 80 DHD3.5/QL30 76
127 114 141 100 90 DHD3.5/QL30 76
140 124 154 110 98 DHD340/QL40 76
146 126 160 114 102 DHD340/QL40 76
168 148 182 132 120 DHD350/QL50 76/89
178 158 192 142 130 DHD350/QL50 76/89
183 163 198 152 138 DHD350/QL50 89/114
194 174 210 164 148 DHD360/QL60 89/114
219 199 235 184 170 DHD360/QL60 89/114
245 225 261 210 192 DHD380/QL80 114
273 253 293 238 219 DHD380/QL80 114/127
325 305 348 294 270 SD10/NUMA100 127
406 382 426 374 350 SD12/NUMA125 140

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