Advantage of Friction kelly bar
1. The crowding force is transferred by friction between Kelly elements;
2. More elements, easier to operate and maintenance;
3. Applicable for soft formations such as silt, clay, sand, strong weathered rock.
Technical Parameter of Kellyway Friction Kelly Bars
| Diameter(MM) | Elements | Length(M) | Torque(KN·M) | Max DrillingDepth(M) |
| 355 | 3&4&5 | 8-12 | 180 | 54 |
| 377/368 | 3&4&5 | 8-13 | 220 | 59 |
| 406/394 | 3&4&5 | 8-14 | 230 | 64 |
| 419/426 | 3&4&5 | 8-15 | 250 | 69 |
| 440/445 | 3&4&5 | 8-15 | 259 | 69 |
| 470 | 4&5&6 | 8-17 | 280 | 95 |
| 508 | 4&5&6 | 10-17 | 320 | 95 |
| 530 | 4&5&6 | 10-20 | 380 | 112 |
| 575 | 4&5&6 | 10-21 | 420 | 118 |
| 630 | 4&5&6 | 10-21 | 460 | 118 |
| All specifications can be tailored as per customers’ special requirements. | ||||
Cases for Friction Kelly Bar
Factory Product Pictures
Packing & Delivery
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