Tamco Seize Free Carbide Drill Bit 7/8″ x 19″ Drill Depth 44-THB7408822

• Tamco
• Seize Free Carbide Drill Bit 7/8″ x 19″ Drill Depth 44-THB7408822
• Tamcos patented Seize-Free carbide drill bit combines a unique; spiral fl uted design with increased air fl ow
• to the carbide tip. This prevents drill binding; the most common problem encountered when drilling through
• pavement overlays such as asphalt; concrete and stone.
• Tamco carbide tipped drills used in rotary percussion hammers will drill hundreds of holes in granite; and a greater quantity in softer stone and concrete.
• It is important to retain the original curvature of the carbide long with the 110 degree cutting angle during the sharpering process.
• Dull carbide cuts slower and requires more energy to drill a hole. This extra energy is absorbed by the drill which can result in fractured carbides; failure of the steel; and/or a failure of the brazing which attaches the carbide to the steel. Dull carbides should be sharpened on a Green SIlicone Carbide grinding wheel with a grit size of approximately 80 grit. These wheels are readily available at most industrial suppliers.
• Drill Diam: 7/8″
• Drill Depth: 19″
• Shank Size: 7/8″ x 4-1/4″

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