Hertel 2291581 Chucking Reamer Wire 58 Hss 4 Flute

Product Description

The HERTEL 2291581 is a straight-flute chucking reamer manufactured from high-speed steel (HSS) with a bright, uncoated finish. Sized to wire gauge 58, it produces a finished bore diameter of 0.0420 inches with consistent dimensional accuracy. The reamer features 4 straight flutes ground for right-hand cutting, a straight-cylindrical shank for secure chuck holding, and a compact 2.5-inch overall length with a 0.5-inch flute length. Machinists and toolroom operators use chucking reamers in drill presses, lathes, and machining centers when a pre-drilled hole requires a precise, clean finish to final diameter. The HSS construction provides adequate hardness and toughness for reaming steel, aluminum, brass, and similar workpiece materials at controlled speeds and feeds.

This reamer is suited for light-stock-removal finishing operations in both production and job-shop environments. Its small diameter makes it appropriate for precision instrument components, hydraulic fittings, fastener hole finishing, and similar applications where tight tolerances and smooth bore finish are required. The straight-cylindrical shank seats directly in a standard drill chuck or collet without additional adapters, making it practical for quick changeovers on manual and CNC equipment.

Key Features

• Wire gauge 58 diameter — 0.0420 inches finished bore
• High-speed steel (HSS) construction for hardness and toughness across common workpiece materials
• 4 straight flutes, right-hand cutting direction for standard machine reaming
• Bright uncoated finish — suitable for use with a wide range of cutting fluids
• Straight-cylindrical shank compatible with standard drill chucks and collets
• Compact 2.5-inch overall length for use in confined setups

Compatibility

Designed as a standard chucking reamer for use in drill presses, engine lathes, turret lathes, and CNC machining centers equipped with a drill chuck or collet capable of holding a straight-cylindrical shank at this diameter range.

Installation Notes

Chucking reamers are installed and operated by machinists. Secure the straight-cylindrical shank firmly in a calibrated chuck or collet before use and confirm runout is within acceptable limits to avoid bell-mouthing the bore. Always apply an appropriate cutting fluid for the workpiece material and operate at reduced spindle speeds compared to drilling — typical practice is one-half to two-thirds of the equivalent drill speed. Never use a reamer to remove more stock than the tool is designed for; leave only a small, consistent allowance from the prior drilling or boring operation.