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Included in Numa's display will be two products introduced earlier this year- the Double Dome (DO) carbide bit and the Champion RC45 reverse circulation hammer.

The DD carbide bit is claimed to drill continuously for a longer period of time (up to 40% longer than standard carbide bits) and to produce more total footage in drilling applications. The DD bits have been designed with a variety of face configurations and shank styles to meet virtually any kind of drilling need. They are available with concave, flat or convex faces, with carbide sizes of 22mm, 16mm, 14mm or 12mm.

One of the new features of the RC45 reverse circulation hammer, which is capable of drilling holes 121-133 mm in diameter, is a collection tube that is detachable from the back-head. This promotes easier maintenance and accessibility to the collection tube and other internal components without completely dissassembling the hammer.

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Title Annotation:drilling and boring machine exhibits
Publication:Mining Magazine
Article Type:Brief Article
Geographic Code:1USA
Date:Oct 1, 2000
Previous Article:Nordberg Group.
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