Hertel 72294010 Chucking Reamer 1 Hss 6 Flute

Product Description

The HERTEL 72294010 is a high-speed steel (HSS) chucking reamer designed for precision hole finishing in metalworking applications. Built with a 0.2280-inch diameter (Wire Size No. 1), this reamer delivers accurate, repeatable sizing in drilled or bored holes. The 6-flute spiral configuration with right-hand spiral direction provides smooth cutting action and improved chip evacuation compared to straight-flute designs. With an overall length of 3-7/8 inches and a 1-1/2-inch flute length, this tool is suited for use in CNC machining centers, manual mills, and drill presses. Machinists and tool-and-die professionals install this reamer using a standard straight-cylindrical shank chuck setup.

This chucking reamer is intended for finishing holes in the 0.2000-to-0.2499-inch decimal inch diameter range, targeting the precise 0.2280-inch finished bore. It is well suited for production and maintenance machining environments where close-tolerance hole sizing is required. The HSS construction handles a wide range of ferrous and non-ferrous workpiece materials at moderate cutting speeds. Its compact flute length makes it appropriate for through-holes and shallow blind holes in general metalworking setups.

Key Features

• 0.2280-inch (No. 1 wire size) diameter for precise hole finishing in the 0.2000-to-0.2499-inch range
• 6-flute spiral geometry with right-hand spiral direction for smooth cutting and efficient chip removal
• HSS construction provides durability across a broad range of workpiece materials
• Straight-cylindrical shank compatible with standard drill chucks and collet systems
• 3-7/8-inch overall length with 1-1/2-inch flute length for controlled reach in shallow to medium-depth holes
• Not configured as a dowel pin reamer or over/under size reamer — intended for standard on-size finishing

Compatibility

Designed as an OEM-style chucking reamer for use in standard drill press, manual mill, and CNC machining center setups accepting straight-cylindrical shank tooling.

Installation Notes

This reamer is installed by a machinist or toolroom professional using a standard drill chuck or collet that accepts a straight-cylindrical shank. Secure the shank fully in the chuck before operation and verify runout with a dial indicator when close tolerances are required. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Always pre-drill or bore the hole to near-final diameter before reaming — never use a reamer to remove excessive stock.