This article lists the main components of a onshore . rigs have similar elements, but are configured with a number of different drilling systems to suit drilling in the marine environment. The equipment associated with a rig is to some extent dependent on the type of rig but typically includes at least some of the items listed below. [pdf]
Whether you are building a fence or putting up a flagpole or a bird house on a pole, you may find the need to dig a small diameter hole. Using a shovel for this job means making your hole larger than you need, so you may choose to use post hole diggers for the job instead. Here is how it is done. [pdf]
A down-the-hole drill, usually called DTH by most professionals, is basically a screwed on the bottom of a . The fast hammer action breaks hard rock into small cuttings and dust that are evacuated by a fluid (air, water or ). The DTH hammer is one of the fastest ways to drill hard rock. The system is thought to have been invented independently by Stenuic. [pdf]
[FAQS about Can down-the-hole drills produce vortex spray holes video ]
There are two basic types of screw compressor: oil-injected and oil-free. Oil-injected rotary screw compressors are the most common, since they are the cheaper ones of the two types. Oil-free screw co. [pdf]
Single-stage compressors are generally used for pressures in the range of 70 psig to 100 psig. Two-stage compressors are generally used for higher pressures in the range of 100 psig to 250 psig. .
Reciprocating air compressors are positive displacementmachines, meaning that they increase the pressure of the air by reducing its volume. This means. .
Rotary air compressors are positive displacementcompressors. The most common rotary air compressor is the single stage helical or spiral lobe oil flooded screw. .
The centrifugal air compressor is a dynamic compressor which depends on transfer of energy from a rotating impellerto the air. Centrifugal compressors. [pdf]
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