Hertel 72293814 Chucking Reamer 0.4995in Hss 6 Flute

Product Description

The HERTEL 72293814 is a high-speed steel (HSS) chucking reamer designed to finish-size drilled or bored holes to a precise 0.4995 inch diameter. With a 6-inch overall length and a 2-inch straight flute length, this reamer delivers controlled material removal in a right-hand spiral direction. The straight-cylindrical shank seats securely in standard drill chucks and collet holders. Six flutes distribute cutting load evenly, reducing chatter and improving surface finish in the bore. This tool is suited for machine-tool applications where hole tolerance and surface finish are critical. Machinists and tool-and-die professionals are the primary users.

This chucking reamer is applied in CNC machining centers, manual lathes, drill presses, and bridgeport-style mills wherever a near-half-inch bore requires finishing to a tight tolerance. The 0.4995 inch diameter is undersized relative to a nominal 0.5000 inch bore, making it appropriate as a dowel pin reamer where a controlled press or transition fit is needed. It performs in steel, cast iron, aluminum, and similar machinable materials when used with appropriate cutting fluid.

Key Features

• Precision ground to 0.4995 inch diameter for controlled fit in dowel pin and close-tolerance bore applications
• High-speed steel (HSS) construction provides hardness and toughness for general-purpose machining
• 6-flute straight geometry reduces chatter and produces a smooth bore finish
• Right-hand spiral direction compatible with standard machine-tool spindle rotation
• Straight-cylindrical shank fits standard drill chucks and ER-style collet holders without adapters
• Rated as a dowel pin reamer for interference and transition fit hole preparation

Compatibility

Designed as an OEM-style chucking reamer for use in machine tools requiring a straight-cylindrical shank; fits standard drill chucks and collet systems accepting a 0.4995 inch shank diameter.

Installation Notes

Installation and use of chucking reamers is performed by machinists in a machine-tool environment. Power down and lock out the spindle before mounting or removing the tool from the chuck or collet holder. Use appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Do not use this reamer to remove excessive stock; pre-drill or bore the hole to within 0.005 to 0.015 inch of final size before reaming.