Hertel 72296429 Chucking Reamer 0.3115 in Hss 6 Flute

Product Description

The HERTEL 72296429 is a high-speed steel (HSS) chucking reamer designed for precision hole finishing in metal fabrication and machining applications. With a reamer diameter of 0.3115 inches and a 6-flute spiral design with right-hand spiral direction, it delivers smooth, accurate finishes in drilled or bored holes. The straight-cylindrical shank allows it to mount directly in standard chucks, collets, or drill press spindles. At 4.5 inches overall length with a 1.5-inch flute length, this tool is sized for general-purpose reaming work on machine tools in production or maintenance shop environments. It is classified as an over/under size reamer, making it suitable for achieving specific tolerance fits rather than standard nominal sizes.

This chucking reamer is used in machine shop and general metalworking environments where precise hole sizing to close tolerances is required. It is appropriate for use in manual or CNC drill presses, lathes, and milling machines. The straight-cylindrical shank provides broad compatibility with common workholding setups. Typical installers include machinists, toolmakers, and maintenance technicians working with ferrous and non-ferrous metals. It falls within the 0.3000 to 0.3499 inch reamer diameter range, covering applications where final hole sizing in that range is needed.

Key Features

• 0.3115 inch reamer diameter for precise hole finishing within the 0.3000 to 0.3499 inch range
• HSS tool material provides hardness and wear resistance for general metalworking
• 6-flute spiral configuration with right-hand spiral direction for smooth, consistent material removal
• Straight-cylindrical shank for compatibility with standard chucks and collets
• Over/under size reamer designation suits tolerance-critical fitting applications
• Compact 1.5-inch flute length suits shallow-to-moderate depth hole finishing

Compatibility

Designed for use with standard machine tool chucks, collets, and drill press spindles that accept a straight-cylindrical shank in the appropriate diameter range.

Installation Notes

This reamer is installed and operated by machinists or toolmakers in machine tool environments. Always secure the shank fully in the chuck or collet before operation and verify spindle alignment to prevent chatter or tool deflection. Use appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality. Do not attempt to use a chucking reamer as a hand reamer — it is intended for machine-driven rotation only.