Cobra Carbide 55990 3xD Non-Coolant Drill 13.40mm

Cobra Carbide 55990 Drill

The Cobra Carbide 55990 is a 13.40 mm solid-carbide drill designed for 3xD drilling depth without internal coolant delivery. It suits machine-shop operators and maintenance technicians who need a rigid, high-performance tool for short-hole production in steel, cast iron and similar ferrous materials.

Sustained-load behaviour

The non-coolant design relies on external flood or mist coolant to evacuate chips and control temperature during continuous cutting. Its 3xD flute length provides sufficient chip space for moderate-depth holes, while the carbide substrate maintains edge integrity at elevated spindle speeds when feed rates are kept within recommended parameters.

Practical limits

The 0.5276 inch decimal equivalent confirms the metric diameter for imperial-programmed machines, and the tool shank fits standard hydraulic or shrink-fit holders for 13 mm shanks. California Proposition 65 warnings indicate the presence of substances linked to cancer and reproductive harm, so appropriate personal protective equipment and ventilation are required during grinding or re-sharpening operations.