Hertel C.E11.1191 Extra Length Drill Bit 0.4688 in Hss

Product Description

The HERTEL C.E11.1191 is an extra length twist drill bit designed for deep-hole drilling applications where standard-length bits cannot reach. Ground from high-speed steel with an oxide finish, it delivers adequate hardness and wear resistance for general-purpose drilling in metal, wood, and plastic. The bit measures 0.4688 inches in diameter with a 118-degree split point angle for self-centering starts and reduced walking on entry. With an 18-inch overall length and 12-inch flute length, it gives tradespeople and machinists the reach needed for through-hole work in thick stock, deep cavities, or extended-reach setups on drill presses and magnetic base drills.

This bit fits into general-purpose production and maintenance drilling tasks where added reach is the primary requirement. Typical applications include drilling through structural steel members, deep timber sections, HVAC ductwork frames, plumbing rough-in blocking, and similar trade work requiring a bit that extends well beyond a standard jobber-length tool. The two-flute design promotes efficient chip evacuation over extended flute lengths, reducing heat buildup and bit deflection during use.

Key Features

• 0.4688-inch diameter with 118-degree point angle for self-centering entry
• 18-inch overall length provides extended reach for deep-hole applications
• 12-inch flute length supports chip evacuation over the full cutting depth
• High-speed steel construction handles general-purpose drilling in metal, wood, and plastic
• Oxide finish adds a layer of surface protection and reduces friction during cutting
• Two-flute geometry promotes clean chip clearance in extended drilling operations

Compatibility

Designed as a general-purpose extra-length drill bit compatible with standard drill chucks accepting a 0.4688-inch shank, including drill presses, magnetic base drills, and heavy-duty hand drills used in trade applications.

Installation Notes

Installation of this bit is performed by machinists, maintenance technicians, and trade professionals using drill presses or portable drilling equipment. Secure the bit firmly in the chuck and verify there is no runout before starting the cut. Use appropriate cutting fluid when drilling ferrous metals to extend bit life and reduce heat. Ensure the workpiece is properly clamped before drilling, and reduce feed pressure as the bit breaks through to prevent grabbing or bit breakage.