Hebei Tuff Heavy Industry Co., Ltd.
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BAUER Rotary Interlocking and Friction Kelly Bar High Standard
KellyBar
Kelly bar are designed for the purpose of transferring torques and pressures onto a drilling tool.The kelly used must therefore be treated with as much care as the drilling rig and the tool and bits themselves in order that consistent drilling performance be ensured.
Feature:
◊ Strict selection of raw meterials and forging parts such as drive stub to assure the reliable quality;
◊ Heat treatment is widely used in the key parts such as drive key to improve wear resistance;
◊ With High torsional coefficient,the compression and vibration resistance of kelly bar is higher than average level,high efficient in rock drilling construction;
Kelly Bar Model List:
| Name | Type | Weight(T) | Transport Length(mm) | Drilling Depth(m) |
| φ377 Friction Kelly Bar | φ377×5×12 | 6 | 13300 | 55 |
| φ377 Interlocking Kelly Bar | φ377×4×12 | 7 | 13550 | 42 |
| φ445 Friction Kelly Bar | φ445×5×13 | 10 | 14510 | 55 |
| φ445 Friction Kelly Bar | φ445×5×15 | 11.5 | 16510 | 65 |
| φ445 Interlocking Kelly Bar | φ445×4×12 | 9.5 | 13645 | 40 |
| φ445 Interlocking Kelly Bar | φ445×4×15 | 11.5 | 16645 | 52 |
| φ508 Friction Kelly Bar | φ508×6×15 | 15 | 16585 | 81 |
| φ508 Interlocking Kelly Bar | φ508×4×12 | 10.5 | 13550 | 40 |
