Hertel 2291094 Chucking Reamer 0.1960 in Hss 6 Flute

Product Description

The HERTEL 2291094 is a straight-flute chucking reamer designed to finish-ream holes to a precise 0.1960 inch diameter, equivalent to a No. 9 wire gauge size. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers consistent dimensional accuracy in light to medium reaming operations on steel, cast iron, aluminum, and similar materials. The straight-cylindrical shank seats securely in standard drill chucks or collet holders. With 6 flutes and a right-hand cutting direction, it produces a clean, smooth bore finish with good chip clearance. Overall length is 5 inches with a 1.25 inch flute length.

This reamer is suited for machine shop, toolroom, and production environments where tight hole tolerances are required. Typical applications include finishing drilled holes in jigs, fixtures, and mechanical assemblies. The short flute length and compact overall size make it appropriate for shallow through-holes and blind holes where a longer reach is not needed. Machinists, tool-and-die makers, and maintenance technicians working with CNC mills, manual mills, or drill presses are the primary installers of this tool.

Key Features

• 0.1960 inch diameter (No. 9 wire gauge) for precise hole finishing
• High-speed steel (HSS) construction for durability across common workpiece materials
• 6 straight flutes with right-hand cutting direction for smooth bore finish
• Bright, uncoated finish suitable for general-purpose reaming applications
• Straight-cylindrical shank compatible with standard drill chucks and collet holders
• Compact 5 inch overall length with 1.25 inch flute length for short-reach applications

Compatibility

Designed as a general-purpose chucking reamer for use in standard drill chucks and collet-style toolholders on manual and CNC machine tools capable of accepting a straight-cylindrical shank.

Installation Notes

Installation is performed by machinists or toolroom technicians. Secure the straight-cylindrical shank firmly in the chuck or collet before use and verify runout before cutting. Use appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Pre-drill the hole to the recommended pilot diameter before reaming to avoid tool overload.