Hertel C.E09.1151 Extra Length Drill Bit 0.4531 in Hss

Product Description

The HERTEL C.E09.1151 is an extra length high-speed steel drill bit designed for through-hole and deep drilling applications where standard-length bits cannot reach. Ground to a 118-degree point angle for general-purpose use, this bit features a 10.0000-inch overall length and a 7.5-inch flute length, giving it the reach needed to bore through thick stock, stacked materials, or deep workpieces. The two-flute geometry promotes efficient chip evacuation, and the oxide finish helps reduce friction and extend tool life during extended cutting cycles. Machinists, tool-and-die tradespeople, and industrial maintenance technicians are the primary users of this bit.

This extra length drill bit is suited for general-purpose drilling in metal fabrication shops, maintenance facilities, and production environments. The 0.4531-inch diameter is appropriate for clearance holes, through-bolting, and pre-drill operations on ferrous and non-ferrous metals. Its extended reach makes it particularly useful when working in deep cavities, through structural members, or on fixtures that restrict access to standard drill presses and hand-held power tools.

Key Features

• 0.4531-inch diameter for precise, repeatable hole sizing
• 118-degree drill point angle for general-purpose metal drilling
• 10.0000-inch overall length provides extended reach beyond standard bits
• 7.5-inch flute length supports deep-hole chip clearance
• Two-flute design balances cutting speed and chip evacuation
• Oxide coating reduces surface friction and resists heat buildup

Compatibility

Designed as a general-purpose extra length drill bit compatible with standard drill chucks accepting round-shank bits in the 0.4531-inch size range, suitable for use in drill presses, milling machines, and heavy-duty hand drills.

Installation Notes

This bit is installed and operated by machinists or qualified maintenance technicians familiar with metal-cutting tools. Secure the shank firmly in the chuck and verify concentricity before beginning a cut to reduce runout and premature wear. Always power down and lock out the machine before changing or inspecting tooling. Use appropriate cutting fluid for ferrous metals to dissipate heat and extend bit life.