Rockmore says its new MultiPoint carbide insert design provides multiple strike points for more efficient rock fracture and longer insert life, and states that extensive rock-drilling trials showed that button bits with MultiPoint inserts last up to 20% longer than the standard hemispherical design, and can increase penetration rates by 10%.
Carbide Drill Insert Extends Bit Life, Improves Penetration Anonymous Engineering and Mining Journal; Jul/Aug 2009; 210, 6; Docstoc pg. 82 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission.
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