Miscellaneous

Air Drilling part 2 So why use air while drilling? With air drilling bits, 20 to 30 percent of the air supplied for flushing the drilled rock out of the borehole is actually diverted around the nozzles in the drill bit to cool the bearings of the drill bit.   Each roller cone has its …

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Air Drilling part 1 Air drilling methods have been around since the 1870’s when Simon Ingersoll, the founder of Ingersoll-Rand partnered up with the Rand Brothers. Simon brought the two methods together to create a new concept of drilling with air.  Jack-Legs were widely already in use on many drilling and infrastructure projects. It was …

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