Hertel 89322986 Taper Shank Drill Bit 2-11/16 in 5MT Hss

Product Description

The HERTEL 89322986 is a taper shank drill bit designed for large-diameter drilling in metal, ferrous materials, and other tough substrates. Built from high-speed steel with an oxide finish, it seats into a No. 5 Morse taper spindle and delivers a 118-degree point angle suited for general-purpose drilling applications. The 2.6875-inch diameter and 20.375-inch overall length make this bit appropriate for heavy-duty machining operations where a standard straight-shank drill cannot provide the rigidity or torque transfer required. Machinists, tool-and-die shops, and maintenance trades use bits in this size range for boring large through-holes and stepped features in structural components.

This drill bit is intended for use in drill presses, radial arm drills, and manual or CNC boring mills equipped with a No. 5 Morse taper spindle socket or a compatible taper sleeve adapter. Its general-purpose designation makes it suitable for a wide range of production and maintenance drilling tasks in shop environments. The 12.75-inch flute length provides adequate chip clearance when drilling deep holes in thick plate or block stock.

Key Features

• High-speed steel construction provides heat resistance and edge retention during extended drilling cycles
• Oxide finish reduces friction and offers modest corrosion resistance at the cutting zone
• 118-degree point angle is optimized for general-purpose drilling in a broad range of metals
• No. 5 Morse taper shank ensures positive drive and accurate seating in compatible spindles
• 12.75-inch flute length supports chip evacuation in deep-hole drilling applications
• 2.6875-inch diameter cuts large bores in a single pass when used with adequate machine horsepower

Compatibility

Designed for use in drill presses, radial arm drills, and boring mills fitted with a No. 5 Morse taper spindle. A taper sleeve or reducing adapter is required when mounting in spindles with a smaller Morse taper designation.

Installation Notes

Installation and operation should be performed by a qualified machinist. Ensure the machine spindle is fully de-energized and locked out before seating or removing the taper shank. Clean both the shank and the spindle socket of chips, oil, and debris before insertion to ensure full taper contact and prevent shank fretting. Always confirm that the host machine has sufficient spindle horsepower and quill travel to support drilling at this diameter before beginning the cut.