Hertel F.901.3175 Reduced Shank Drill Bit 1.25in 118deg Hss

Product Description

The HERTEL F.901.3175 is a reduced shank twist drill bit designed for general-purpose metal drilling in machine shop, maintenance, and fabrication applications. It features a 1.25-inch cutting diameter with a 3/4-inch straight-cylindrical reduced shank, allowing it to be chucked in standard drill presses and milling machines that cannot accommodate a full 1.25-inch shank. Ground from high-speed steel (HSS) with an oxide finish for basic lubricity and corrosion resistance, the bit is suited for drilling mild steel, aluminum, cast iron, and similar materials. The 118-degree point angle is a general-purpose geometry that performs across a broad range of common workpiece materials.

This bit is used in production and maintenance drilling operations where a large-diameter hole is required but tooling is limited to a 3/4-inch chuck capacity. Typical applications include structural fabrication, equipment repair, and general metalworking on drill presses or knee mills. The 6-inch overall length and 3-inch flute length provide adequate clearance for most through-hole operations in plate and structural stock without requiring extension tooling.

Key Features

• 1.25-inch cutting diameter with a 3/4-inch reduced straight-cylindrical shank for standard chuck compatibility
• 118-degree split-point geometry for general-purpose drilling across common metals
• High-speed steel construction provides good wear resistance at moderate cutting speeds
• Oxide finish adds baseline lubricity and surface protection
• 3-inch flute length supports maximum drilling depth of 3 inches per pass
• 6-inch overall length fits standard drill press and mill setups without special toolholders

Compatibility

Designed as a general-purpose reduced shank drill bit compatible with 3/4-inch capacity drill press chucks and milling machine toolholders. No specific machine model compatibility was provided by the manufacturer for this part.

Installation Notes

Installation is performed by a machinist or maintenance technician using a standard keyed or keyless drill chuck rated for 3/4-inch shank diameter. Ensure the shank is fully seated and the chuck is tightened securely before operation. Use appropriate cutting fluid for the workpiece material to extend tool life and improve cut quality. Inspect the cutting edges for wear or chipping before each use and replace the bit if edge integrity is compromised.