How to choose down the hole bit tool

When it comes to down the hole (DTH) bits, there are three key varieties to consider: button bits, hammer bits, and drag bits. The most commonly used type of DTH bit is the button bit, suitable for a broad range of drilling tasks. For the softer rock formations, hammer bits can be obtained in a range of shapes and sizes. When the surface is hard, optimally shaped drag bits come in all sizes to get the job done.

Making a wise selection of a DTH bit requires factoring in various elements in order to drill efficiently – the type of rock to be bore, the drilling setup, and the rate of productivity.

Button bits provide a highly versatile drilling solution, with their size, style, and shank components being tailored to any application. The range typically consists of 5”, 6”, and 7” bits in flat, concave, or convex variations; along with shank sizes of 2”, 3”, and 4”. Regardless of the requested specifications, button bits are sure to cover the job.

Hammer bits exist in an array of dimensions and styles, providing drillers with the specific tools necessary to penetrate softer rock surfaces. Five-inch, six-inch, and seven-inch sizes are the most common options, as well as chisel, cross and button patterns. Plus, a selection of shanks – 2”, 3”, and 4” in length – exist to ensure the perfect fit for each project.

Innovative drag bits can be utilized for penetrating challenging rock formations and come in various sizes and shapes. Popular drag bit diameters are 5”, 6”, and 7” while the usual styles are chisel, cross, and button. Additionally, available shank sizes are 2”, 3”, and 4”.

It is wise to reflect upon the kind of rock to be penetrated, the purpose of the drilling, how swift the drilling needs to be, and how proficient it must be when selecting a DTH bit.

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