Foundation Drilling Machine
View system integration details
Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Kelly Bar used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.
A canonical Kelly Bar is characterized by the integration of Kelly Bar Body and Upper Connection (Box). In industrial production environments, manufacturers listed on CNFX commonly emphasize High-strength alloy steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.
A hollow, square or hexagonal steel bar that transmits torque and vertical force from the drilling rig's rotary table to the drill string in foundation drilling operations.
Technical details and manufacturing context for Kelly Bar
Commonly used trade names and technical identifiers for Kelly Bar.
This component is essential for the following industrial systems and equipment:
| pressure: | Up to 500 bar (dependent on wall thickness and material grade) |
| temperature: | -20°C to 150°C (operational range for standard steel grades) |
| vertical load: | Up to 3000 kN (axial compression/tension capacity) |
| torque capacity: | 50 kNm to 1000 kNm (varies by cross-section and size) |
| slurry concentration: | Up to 40% solids by weight (for standard abrasion-resistant grades) |
Manufacturer profiles with relevant production capability in China
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Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.
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A Kelly Bar transmits both torque from the rotary table and vertical force to the drill string, enabling efficient drilling in foundation and piling applications.
Kelly Bars are manufactured from high-strength alloy steel to withstand extreme torque, compression, and abrasion during demanding drilling operations.
Key components include the Kelly Bar body (hollow square/hexagonal), upper connection (box), lower connection (pin), Kelly flats for torque transmission, and internal bore for fluid flow.
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