Cobra Carbide 56345 8xD Non-Coolant Drill 4.65mm

Cobra Carbide 56345 Drill Specifications

The Cobra Carbide 56345 is an 8xD high-performance non-coolant drill with a 4.65 mm diameter and a decimal equivalent of 0.1830. It is designed for precision drilling tasks where external coolant supply is not available or practical. Machinists and fabricators working with metals or composites will find it suited for deep-hole applications requiring consistent chip evacuation.

Non-Coolant Operation Limits

Without through-tool coolant the drill relies on external flood or mist lubrication and the flute geometry to remove heat and chips from depths up to eight times the diameter. Cutting speeds and feed rates must be reduced compared with coolant-fed tools to avoid thermal buildup and premature wear. Users should monitor hole quality closely when drilling sticky or abrasive materials at the full 8xD depth.

Carbide Construction and Shank Fit

The solid carbide body provides high rigidity and heat resistance, helping maintain diameter accuracy over long production runs. A standard cylindrical shank fits common collets and drill chucks without special holders. The tool ships new and carries a California Proposition 65 warning for chemicals known to cause cancer and reproductive harm, so appropriate personal protective equipment and ventilation are advised during use.