D & L Thomas Equipment Corporation

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Extending Drill Bit Life

from Drill Bits Newsletter Winter 2002

The distance that a rock bit will drill depends on many factors . Of these, rock bit reconditioning can be the major factor in the cost and performance of a button bit or carbide insert ( four-point) rock drill bit.
Regular sharpening is essential for maximum bit life. Button bits are designed for fast penetration, and keeping them sharp has a direct result on penetration rate as well as longevity. As button bits wear, they develop flats on the tungsten carbide buttons. Flats inhibit rock shattering power and force the bits and (your equipment) to work harder to get the job done. Flats also greatly increase stress on the buttons, and this stress is the most frequent cause of button breakage and failure.

Click Here For a complete guide to Re-sharpening and maintenance of Button and Four point Bits

Whether at a mine, a construction site, or a quarry, adequate conditions should exist to meet reconditioning requirements. This can range from a portable grinder to a complete shop. Proper tools must be available to do the job. A rock bit grinding machine must be selected to handle the range and quantity of bits that are expected to be maintained. Correct grinding wheel sizes, composition , hardness and inventories must be maintained. Safety materials such as glasses, gloves, ear protection and other necessary materials should always be on hand. A well ventilated place with adequate dust removal should be provided.

Simple, but regular bit sharpening can minimize these problems. D&L Thomas Equipment has the tools available for proper sharpening and maintenance of your bits. For more information, click here or call us at 1-800-843-0833.

 
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