CHINA PROFESSIONAL MANUFACTURER AND EXPORTER OF INTERLOCKING & friction kelly bar APPLIED TO BAUER DRILL RIGS

Bauer Kelly bar is a key component in the execution of boreholes with Bauer hydraulic rotary drill rig. The telescopic Bauer Kelly bar transfers the torque of the rotary drive and the crowd pressure of the crowd system concurrently to the drilling tool. Normall a Kelly bar consists of 2 to 5 telescopic tubular sections with a system of drive keys and lock recesses, which are welded onto their outer surfaces. A standard Kelly bar is fabricated with a total of 6 drive keys on each section. The tubular Kelly sections are manufactured from very high-tensile steel to ensure minimum weight at adequate strength. In China, hydraulic rotary bore piling machines, let