Hertel 2291714 Chucking Reamer Wire Size 71 Hss

Product Description

The HERTEL 2291714 is a straight-flute chucking reamer designed to finish-ream precision bores to a wire gauge No. 71 diameter of 0.0260 inches. Manufactured from high-speed steel (HSS) with a bright, uncoated finish, this reamer is built for consistent dimensional accuracy in small-diameter through-hole and blind-hole reaming operations. The straight-cylindrical shank seats securely in a drill chuck or collet. With 3 flutes and right-hand cutting action, it removes minimal material while producing a clean, finished bore surface. Overall length is 1.25 inches with a flute length of 0.50 inches. Machinists, tool-and-die makers, and precision metalworking shops are the primary users of this tool.

This chucking reamer is suited to light-material-removal finishing passes in small precision bores across ferrous and non-ferrous metals. Typical applications include instrument components, watch parts, small fastener holes, and any operation requiring a finished hole in the wire-gauge range below 0.050 inches. The bright HSS construction performs reliably at moderate cutting speeds with proper cutting fluid applied. It is intended for use in drill presses, CNC machining centers, lathes with a tailstock, and manual milling setups where a true, concentric bore finish is required.

Key Features

• Wire size No. 71 diameter — 0.0260 inches decimal equivalent for sub-0.050-inch bore finishing
• 3-flute straight design provides stable, chatter-resistant cutting in small bores
• Right-hand cutting direction compatible with standard machine spindle rotation
• High-speed steel (HSS) construction offers toughness across a wide range of workpiece materials
• Bright uncoated finish suitable for use with cutting oils and water-soluble coolants
• Straight-cylindrical shank fits standard drill chucks and collet holders without adapters

Compatibility

Designed as an OEM-style replacement or direct-use chucking reamer for any machine tool setup requiring a wire gauge No. 71 straight-flute reamer with a straight-cylindrical shank.

Installation Notes

This reamer is installed by a machinist or toolroom technician. Secure the straight-cylindrical shank fully in a drill chuck or precision collet before initiating the spindle. Always power down the machine and bring the spindle to a complete stop before changing or inspecting the tool. Use an appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish — never run this reamer dry on steel.