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Replaceable Head Drill Body Expansion for Large-Diameter Drilling


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Dormer Hydra Extension

A cost-effective option for large-diameter drilling, the Dormer Hydra program supports structural and general engineering applications, the company says. The range of solid carbide heads for steel, stainless steel and cast iron are married together with a high-speed steel body.

Existing body options—3xD, 5xD and 8xD—have been expanded with a 12xD for deep hole applications and a 1.5xD for improved rigidity in shallow hole and plate drilling.

The range of bodies incorporates coolant holes to improve cutting efficiency and chip evacuation. The exact fit between head and body maximizes tool rigidity for superior hole accuracy and precise tolerances, the company says.

Also, one body can fit multiple solid carbide head sizes, and heads can be easily changed without removing the body from the spindle.

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