Tricone bit selection criteria
When to use standard air-bearing drill bits
Air-bearing drill bits can be used in any rock formation
Cutting structures often have problems before bearings fail
In particular, the cost situation needs to be considered
When to use Omega single seal drill bits
Developed for fee-by-meter (CPM) contractors
Developed for mining companies that mine coal, gold, copper and iron ore
Developed for environments that require a large amount of water spray to suppress dust
When do you need a sealed bearing drill?
There is not enough air for flushing chips and cooling bearings, water inlet and water spray
Used in air bearing applications where bearing failure is the primary failure mode and the remaining life of the cut structure is at least 50%.
When a customer requests an increase in meters, and a reduction in the number of drill bit replacements and the probability of injury. In addition, it can meet the logistics requirements of shipping goods to remote areas.
In general, double sealed Omega bearing bits run more smoothly in soft to medium hardness rock formations (type 40 to 60 type cutting structures), where cutting structure failure is the main failure mode. The additional cost of the sealed bearing system is not covered by the warranty.
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