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TOP HAMMER DRILLS HOLE RANGE
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Generally, drilling below 152 mm. (6 inc) is best accomplished with tophammer units. However, there is no need to doubt in that above this diameter, tophammer units are doing some of this work effectively with the introduction of larger platforms and more powerful rock drills. Simply looking at the drilling rig rage above gives an indication of which tophammer models are commonly used for the different diameters found in construction and mining. Some advantages of tophammer drills may be listed as below: Hole diameters of 1 5/8" - 6" (41 mm-152mm) Where hole lengths are between 20-25 meters tophammer drills have a faster initial penetration rate. Where small up holes are required (with a small enough hole diameter to hold in overhead explosives) To be able to drill a smaller hole for less damage to the formation With the installation of drill tubes into the drilling system, more favorable results are experienced with hole accuracy.When you buy a tophammer drill, you have to pay a lot. After you have had it, you still have to pay continuously for the spare parts of them. This point is somewhat inevitable. Maybe what people having tophammer drill should pay attention much more, the need in that almost all of the spare parts should be changed by regularly to be able to maintain working properly. The spares are not really cheap and you also need to wait for a long even if you have paid for them. Delkom Grup has been known for years with its punctually performanced stock performance with really better prices and with qualified products for all of the models in the above chart.
