The History of Tricone Drill Bit Design

A tricone bit is one of many rock drilling tools that would be commonly found in both the mining and the well drilling industries. Designed with three cone shaped heads that are each equipped with several rows of teeth, the tricone is a most versatile bit.

Drill-bitA group of engineers that belonged to the Sharp-Hughes Tool Company first created the tricone bit in 1933 during the Great Depression. Using the two-cone bit design that belonged to the company; the engineers were able to incorporate a third cone to create the tricone bit we are familiar with today. In fact, the only real difference between the tricone and the original drill bit is the fact that the original drill bit only had two heads instead of three – the general mechanics and functioning of the tricone was otherwise perfectly suited to its tasks back then. The heads on the tricone bit inclined at roughly 45 degrees and used a bearing in order to make sure they run smoother and last longer.

Since 1933, the tricone (three-cone) bit has been the top choice in the mining and well drilling industry. There have been some improvements made on original tricone design – better bearings (open roller bearings, air-cooled roller bearings, sealed roller bearings, or sealed journal bearings) and sharper teeth – but the same basic concept still remains. These advances have made the tricone bits dig deeper, last longer and dig through any formation. When compared to other drill bits, tricone drill bits are easier to maintain, switch out and control when working with difficult rock formations. Another reason why tricone bits are favored over other bits is the initial cost. When it comes to a tight budget, tricone drill bits are a great deal more affordable than any other bit on the market.

 

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