Product description:
Eccentric Casing System Features:
1. Hardening treatment of the part’ s surface. With longer
operating life and excellent anti-wear properties.
2. Structural optimization Strengthen the structural strength, easy
to operate.
3. Superior performance stable and reliable performance, high
drilling penetration.
Technical parameters table of standard eccentric casing system
| Product Code | Outer Dia.(A)mm | Inner Dia.(B)mm | The Max Wall Thickness | Reamed Dia.(C)mm | Inner Dia. Of Casing Shoe(D)mm | Inner dia. Of Casing Shoe That Pilot Bit Can Pass Through | Type of Hammer Recommended | Hammer Type(E) | Drill pipe mm |
| HEC108-HD35-84 | 108 | 96 | 6 | 118 | 86 | 84 | HD35 | DHD3.5 QL30 | 76 |
| HEC114-HD35-90 | 114 | 102 | 6 | 123 | 92 | 90 | HD35 | DHD3.5 QL30 | 76 |
| HEC127-HD45-97 | 127 | 109 | 9 | 138 | 99 | 97 | HD45 | DHD340A QL40 | 76 |
| HEC140-HD45-115 | 140 | 128 | 6 | 152 | 117 | 115 | HD45 | DHD340A QL40 | 76 |
| HEC168-HD55-140 | 168 | 156 | 6 | 185 | 142 | 140 | HD55 | DHD350R QL50 | 76/89 |
| HEC178-HD55-146 | 178 | 158 | 10 | 195 | 148 | 146 | HD55 | DHD350R QL50 | 76/89 |
| HEC183-HD55-150 | 183 | 163 | 10 | 200 | 152 | 150 | HD55 | DHD350R QL50 | 76/89 |
| HEC194-HD65-165 | 194 | 180 | 7 | 209 | 167 | 165 | HD65 | DHD360 QL60 | 89/114 |
| HEC219-HD65-190 | 219 | 205 | 7 | 237 | 192 | 190 | HD65 | DHD360 QL60 | 89/114 |
| HEC245-HD85-208 | 245 | 225 | 10 | 264 | 210 | 208 | HD85 | DHD380 QL80 | 114 |
| HEC273-HD85-240 | 273 | 259 | 7 | 308 | 242 | 240 | HD85 | DHD380 QL80 | 114 |
| HEC323-HN100-280 | 323 | 303 | 10 | 358 | 282 | 275 | HN100 | NUMA100 SD10 | 114 |
Operating principle:
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 hoe by means of cement grout or some
other sealing agent.
4. Drilling continues to the desired depth in the bedrock using a
conventional drilling tools.
Application :
It is suitable for drilling water wells, geothermal wells, short
micro-piles, medium mini-type, grouting hole of building & demand
harbor project.
Structure picture:
Detailed picture
Company Information:
Sollroc , with more 10 years of experience ,is one of the
professional manufacturer and supplier of high performance rock
drilling tools like: DTH hammers and bits, RC hammers and bits, DTH
drill rods and top hammer drilling tools. Our tools are widely used
in different drilling applications including mining, quarrying,
water well drilling, geotechnical industries and etc.
Sollroc is specialized in designing, manufacturing and developing
equipments and accessories for standard models as well as the
special needs of clients and provides them with the best
suggestions and solutions. We practice strict and stringent quality
control during manufacturing and adhered to recognized and approved
quality control systems. Each of our products follows the quality
requirements and procedures to ensure finished products are durable
and superior up to standard.
