Hertel 72294309 Chucking Reamer Wire Size 30 Hss

Product Description

The HERTEL 72294309 is a high-speed steel (HSS) chucking reamer sized to wire gauge number 30, corresponding to a decimal diameter of 0.1285 inches. Designed for precision hole finishing, this reamer removes minimal stock to bring a drilled or bored hole to a tight, accurate tolerance. The four-flute spiral configuration with a right-hand spiral direction promotes smooth chip evacuation and consistent surface finish. At 2.75 inches overall length with a 0.875-inch flute length, it is well suited for short, precise reaming operations in production and maintenance machining environments. Machinists and tool-and-die technicians are the primary users of this tool.

This chucking reamer is intended for use in machine tools such as drill presses, lathes, and machining centers where a straight-cylindrical shank can be gripped securely in a drill chuck or collet. Wire size 30 reamers are commonly applied in light metalworking tasks involving small-diameter holes in steel, aluminum, brass, and similar machinable materials. The straight-cylindrical shank allows straightforward tool mounting without the need for specialized holders.

Key Features

• Wire gauge number 30 diameter — 0.1285 inches decimal equivalent
• HSS tool material provides hardness and wear resistance for general-purpose reaming
• Four-flute spiral geometry with right-hand spiral direction for smooth cutting action
• Straight-cylindrical shank fits standard drill chucks and collet holders
• Compact 2.75-inch overall length suits confined or short-reach applications

Compatibility

Designed as a standard chucking reamer for use in any machine tool equipped to accept a straight-cylindrical shank tool in the appropriate diameter range.

Installation Notes

Installation and use should be performed by qualified machinists familiar with proper reaming practices. Ensure the machine spindle is fully stopped and the tool is securely clamped in the chuck or collet before beginning any operation. Use appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Do not use this reamer as a drill — it is designed for finishing pre-drilled holes only.