Rotary Deck Bushings
Typically the life and over-all performance of a rotary deck bushing is similar to that of a tricone bit. The factors which impact the running life of these two products are basically the same.
The deck bushing will outlast the tricone when it comes down to indiviual product life but the longevity of each bushing may vary from one area of a mining operation to another depending on the drilling conditions and other factors listed below just as those same conditions would have an effect on various sizes and types of bits.
In hard rock drilling application found at most iron ore and copper mines where the cuttings are typically more abrasive, the deck bushing will not be in service for as long a period as say that of the average coal mine application where the overburden is generally boulders and gravels etc. Typically rotary deck bushing life can vary between 25 and 65,000 meters depending upon the application.
Factors Affecting Deck Bushing Performance:
- R.P.M. of the drill steel
- Vertical or angle drilling application
- Drill steel diameter
- Condition of the drill
- Pulldown forces applied to the drill steel
- Drilling conditions (abrasiveness of the cuttings)
