Grinding Pins


Rockdrill button bits require periodic maintenance throughout their life to overcome the effects of button wear. As the buttons develop wear flats, penetration rates decrease, or additional feed force is required to maintain a given penetration rate. This increases the risk of deviation and adds further stress to equipment.


To maintain close-to-new productivity and performance from the bit, the face buttons need to be re-profiled when they have developed a wear flat width of 30% of the button diameter. Gauge buttons can also benefit from regrinding as part of the refurbishment process. Buttons should also be reground when “snakeskin effect” is noticed, as this surface feature can rapidly progress to cracks and breakdown of the buttons.


Pilot grinding pins benefit from years of development, refinement and field experience, providing the tool grinding craftsman with the most productive combination of grinding speed and life, to allow the button bit to be returned to profitable use as quickly as possible.


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1 Item(s)

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