JCR Carbide Bit

Carbide (buttons) are resistant to wear and abrasion, they do indeed develop signs of wear.  The most common wear pattern is a "flat" at the impact area.  This is most associated with drilling in hard and abrasive rock conditions.  As this "flat" area becomes large the effective cutting action is reduced.  If not corrected this situation can develop into large problems including carbide "breakage" or "shearing".  Grinding at regular intervals assures of maximum bit performance.
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