Product: Bearing for Kelly Bar
Bearing for Kelly Bar
| Identification No. | Torque(ton.m) | O.D.(mm) | sections | Drilling Depth(m) |
| IK 36/470/3/27~28 | 36 | 470 | 3 | 27~28 |
| IK 36/470/4/36~72 | 36 | 470 | 4 | 36~72 |
| IK 25/440/3/36 | 25 | 440 | 3 | 36 |
| IK 25/440/4/50 | 25 | 440 | 4 | 50 |
| IK 28/394/3/24~48 | 28 | 394 | 3 | 24~48 |
| IK 28/394/4/32~65 | 28 | 394 | 4 | 32~65 |
| IK 18/377/3/36 | 18 | 377 | 3 | 36 |
| IK 18/377/4/50 | 18 | 377 | 4 | 50 |
| IK 22/406//3/36 | 22 | 406 | 3 | 36 |
| IK 22/406/4/50 | 22 | 406 | 4 | 50 |
| IK 36/508/4/60 | 36 | 508 | 4 | 60 |
| * Other sizes can be manufactured as per customer demand | ||||
Kelly bars are key components of the construction drilling machines. The quality of the Kelly Bars directly affects the performance of the drilling machines. They transfer the torque of rotary drive and pressure of the crowd system to the drilling tools.
Frictional kelly bar doesn’t need to unlock the joint of its inner and outer lining so that it is convenient and fast to lift the bar. Non-stair key, friction transmission and the outside key are made by highly wear-resisting tempering steel. Friction Kelly Bar is applicable for layer of soft ground and mud, (mud) sand, gravel.
1. Material: Q345B or 35CrMo
2.Type: Interlocking kelly bar, friction kelly bar, combined interlocking and friction kelly bar, square kelly bar etc customized as per requirement
3. Application: Suit for international CFA rigs as Bauer, Soilmec, Mait, Casagrande etc other brand piling rigs;
4. Customer Feedback: Applied on various drilling rigs and highly praised by domestic and abroad customers
Changsha Unique Machinery Co.,Ltd. invest 60 mililon (RMB) at Economic Development Area in MILUO industrial park. The proposed land acquisition is 20 acres. The main annual production ability of the company is about 3000 pcs rotary drilling tools and 200 pcs kelly bar. After the project completed, the estimated annual output value is around 1.5 billion (RMB), and annual tax income is about 10 million (RMB).
