How to choose roller cone bits for piling



Solidkey has many models of roller cone bits for piling applications, from year 2014, the models name are :
Gneration 1(C133),
Generation 2,
Generation 3(C142),
C169, C120,
New Generation 1(NG1),
New Generation 2(NG2), 
New Generation 3(NG3).
Among the NG2 family, it has NG2(49/7.7), NG2(56/9), NG2(52/10).
In China domestic, our technical team work face to face with drillers, from years and years collecting drilling records, the NG2(49/7.7) is the final version of best cost-performance that could beat many models produced by Solidkey or competitors in market.
Many drillers prefer more tungsten carbide inserts(teeth) on cones, but according to our experience, 49 teeth performs better than 56 teeth.
In the another hand, price of NG2(49/7.7) is higher than C133 or other models like NG1, but NG2(49/7.7) could drill much more meters, the cost perfomrnance of NG2(49/7.7) is higher.
So, our solutions for piling roller cone bits is NG2(49/7.7), this solutions comes from many year's experience in China domestic and many drillers/distributors from worldwide,  the same final choices of users is the best provement.

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