Hertel 72294341 Chucking Reamer Wire Size 34 Hss

Product Description

The HERTEL 72294341 is a high-speed steel (HSS) chucking reamer sized to wire gauge 34, equivalent to 0.1110 inches diameter. Designed for precision hole finishing in metal components, this reamer removes a small, controlled amount of material to bring a drilled hole to a tight, accurate final size. The bright, uncoated HSS construction handles a broad range of ferrous and non-ferrous workpiece materials at moderate cutting speeds. It features a straight-cylindrical shank for secure seating in standard drill chucks, collets, and floating reamer holders. The 4-flute spiral geometry with right-hand spiral direction and right-hand cutting action provides a smooth, consistent finish with good chip evacuation in through-hole and blind-hole applications.

This chucking reamer is intended for machine use in CNC machining centers, manual mills, drill presses, and lathes wherever a wire-size 34 finished bore is required. It is suited for production and maintenance environments in metalworking shops, toolrooms, and manufacturing facilities. The 2.625-inch overall length and 0.875-inch flute length make it appropriate for shallow to moderate-depth holes typical of small-diameter wire-gauge work. Machinists and toolroom technicians handling precision fitting, bushing installation, and close-tolerance assembly work are the primary users.

Key Features

• Wire size 34 diameter — 0.1110 inches — for close-tolerance hole finishing
• HSS tool material provides toughness and wear resistance across common workpiece metals
• Bright, uncoated finish suitable for use with standard cutting fluids
• 4-flute spiral geometry with right-hand spiral and right-hand cutting direction for smooth surface finish
• Straight-cylindrical shank seats in standard drill chucks, collets, and floating holders
• Compact 2.625-inch OAL with 0.875-inch flute length suited for shallow hole applications

Compatibility

Designed as an OEM-style replacement or direct-use chucking reamer for standard machine tool setups requiring a wire gauge 34 straight-cylindrical shank reamer in HSS.

Installation Notes

Chucking reamers are installed by machinists and toolroom technicians in powered machine tools — ensure the machine is fully powered down and locked out before changing tooling. Seat the straight-cylindrical shank fully and concentrically in the chuck or collet to minimize runout, as runout directly degrades hole quality and tool life. Use an appropriate cutting fluid for the workpiece material to extend tool life and achieve the intended surface finish. Reamers remove only a small amount of material — confirm the pre-reamed hole is within the recommended stock allowance for the 0.1110-inch target diameter before proceeding.