Hertel 72294515 Chucking Reamer Size 51 Hss 4 Flute

Product Description

The HERTEL 72294515 is a high-speed steel (HSS) chucking reamer designed for precision hole finishing in metal workpieces. Built to wire gauge size 51, it cuts at a decimal diameter of 0.0670 inches with a right-hand spiral flute geometry that promotes smooth chip evacuation and consistent surface finish. At 2 inches overall length with a 0.75-inch flute length, this is a compact tool suited for tight-tolerance reaming operations on small-diameter bores. The straight-cylindrical shank seats securely in standard drill chucks or collet holders. Machinists and tool-and-die tradespeople use this reamer for finish-reaming drilled or bored holes to close tolerances in production and maintenance applications.

This chucking reamer is used in machining centers, drill presses, and manual lathes wherever a wire gauge size 51 finished bore diameter is required. It is well suited for small-part work, fixture holes, and precision fit applications in metal fabrication, tool rooms, and maintenance shops. The 4-flute right-hand spiral configuration makes it appropriate for a wide range of ferrous and non-ferrous materials commonly encountered in general machining operations.

Key Features

• Wire gauge size 51 reamer diameter — 0.0670 inches decimal equivalent
• High-speed steel (HSS) construction for durability across a broad range of materials
• 4-flute spiral right-hand geometry for smooth cutting action and chip evacuation
• Straight-cylindrical shank compatible with standard drill chucks and collet systems
• Compact 2-inch overall length suited for close-quarters and small-part applications
• 0.75-inch flute length provides adequate engagement for shallow bore finishing

Compatibility

Designed as an OEM-style replacement or standard tooling addition for any setup requiring a wire gauge size 51 chucking reamer with a straight-cylindrical shank in HSS.

Installation Notes

This reamer is installed and operated by machinists in machine tool setups including drill presses, CNC machining centers, and manual lathes. Ensure the workpiece is securely fixtured and the spindle speed is set appropriately for the material and reamer diameter before engaging the cut. The hole should be pre-drilled or bored to the correct undersize before reaming to achieve the intended finish diameter. Always use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore quality.