Wuhan Kingdrilling Diamond Co.,Ltd
Wuhan Kingdrilling Diamond Co.,Ltd
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.OD 127mm MRE Dual Rotors Eccentric Overburden Casing Drilling Bit CIR Shank
Description
MRE Dual Rotors Eccentric Overburden casing drilling system, At clockwise rotation, reamer bits expand to bring the casing pipe into hole. After finished, reamer bits closed anticlockwise and then can be lift up from the bottom of the hole by drilling rig. This type is especially applied for diameter 89-323mm.
Characteristics
1. Suitable 89-323mm OD casing pipe
2. Widely used in collapse rock strata
3.Widely used in Underground Mining Industry
Technical Parameter
| Model 型号 | Bit diameter 钻头直径 | Casing pipe OD 跟管外径 | Wings 扩片 (PCS) | Spline 花键 | Weight 重量 (KG) | ||||||
| Expanded 扩孔直径 | Retracted 收拢直径 | Shank step 挂靴直径 | |||||||||
| inch | mm | inch | mm | inch | mm | inch | mm | ||||
| MRE89 | 3.70 | 94 | 2.64 | 67 | 2.95 | 75 | 3.50 | 89 | 2 | CIR76 | 5.5 |
| MRE108 | 4.72 | 120 | 3.31 | 84 | 3.66 | 93 | 4.25 | 108 | 2 | CIR90/HD35/DHD3.5 | 10/11 |
| MRE114 | 4.92 | 125 | 3.62 | 92 | 3.98 | 101 | 4.49 | 114 | 2 | CIR90/HD35/DHD3.5 | 11/12 |
| MRE127 | 5.59 | 142 | 3.98 | 101 | 4.33 | 110 | 5.00 | 127 | 2 | CIR110/HD45/DHD340 | 14.5/16 |
| MRE133 | 5.98 | 152 | 4.33 | 110 | 4.76 | 121 | 5.24 | 133 | 2 | CIR110/HD45/DHD340 | 16/17.5 |
| MRE146 | 6.38 | 162 | 4.72 | 120 | 5.08 | 129 | 5.75 | 146 | 2 | CIR110/HD45/DHD340 | 18.5/20 |
| MRE159 | 7.09 | 180 | 5.12 | 130 | 5.55 | 141 | 6.26 | 159 | 2 | CIR110/HD55/DHD350 | 24/30 |
| MRE168 | 7.48 | 190 | 5.39 | 137 | 5.79 | 147 | 6.61 | 168 | 2 | CIR110/HD55/DHD350 | 26/33 |
| MRE178 | 7.95 | 202 | 5.75 | 146 | 6.14 | 156 | 7.01 | 178 | 2 | CIR150/HD55/DHD350 | 34/36 |
| MRE194 | 8.35 | 212 | 6.34 | 161 | 6.73 | 171 | 7.64 | 194 | 2 | CIR150/HD65/DHD360 | 44.5/51 |
| MRE219 | 10.04 | 255 | 7.44 | 189 | 7.87 | 200 | 8.62 | 219 | 2 | CIR150/HD65/DHD360 | 56.5/63 |
| MRE245 | 10.63 | 270 | 8.19 | 208 | 8.62 | 219 | 9.65 | 245 | 2 | CIR170/HD65/DHD360 | 86/92 |
| MRE273 | 11.89 | 302 | 9.45 | 240 | 9.88 | 251 | 10.75 | 273 | 2 | HD85/DHD380 | 135 |
| MRE323 | 13.78 | 350 | 11.02 | 280 | 11.65 | 296 | 12.72 | 323 | 2 | HD85/DHD380 | 190 |
Button bit and raw materials type
1. Spherical Button
.Universal button
.Strong resistance to wear
.Suited for abrasive to very abrasive drilling conditions
2. High quality steel:
.Good wear resistance
.Strong toughness
.Stong hardness
Applications of rock drilling tools
• Underground mining
• Tunneling,quarrying
Competitive Advantage
• High grade tungsten carbide inserts
• High quality steel Bit bodies and all processed using state-of-the-art CNC machinery and heat treatment are finished in the factory.
Wuhan Kingdrilling Diamond CO., LTD, one of the most professional manufacturer specialized in researching and producing Overburden casing drilling system, DTH hammer, DTH drill bits, Thread bits, Taper bits, Shank adapter, Drilling rods, Coal mining picks, Roller cutters, Tricone bits and related rock drilling tools.
Whatever in construction, engineering, piling, water well drilling, tunneling, mining, quarrying or horizontal drilling industry, KINGDRILLING will do the best to satisfy your demands. "Kingdrilling, Keep On Striving", we’ll always be in this line to support our customers the most reliable products and services.
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