Hertel 72006455 Chucking Reamer 0.0645 in Hss 4-flute

Product Description

The HERTEL 72006455 is a high-speed steel (HSS) chucking reamer designed to finish-ream precise cylindrical bores to a 0.0645-inch diameter. With a straight-cylindrical shank and 4 straight flutes ground to a right-hand cutting direction, it delivers accurate, repeatable hole sizing in a wide range of ferrous and non-ferrous materials. The tool measures 2-1/2 inches overall length with a 1/2-inch flute length, making it well suited for shallow finishing passes in tight workspaces. It ships in a bright, uncoated finish. Machinists and toolroom technicians are the primary users of this tool.

This reamer is intended for use on drill presses, lathes, CNC machining centers, and manual milling machines where a chuck-style holder is used. Its small diameter places it in the 0.0500 to 0.0999 inch range, making it appropriate for precision instrument components, small fastener holes, and fine-tolerance bore finishing operations. The compact flute length and overall length suit bench-top and small-format machine work where clearance is limited.

Key Features

• 0.0645-inch diameter for precise small-bore finishing
• HSS construction provides good wear resistance across common workpiece materials
• 4 straight flutes with right-hand cutting direction for clean chip evacuation
• Straight-cylindrical shank for compatibility with standard drill chucks and collets
• Bright, uncoated finish — no additional coating to affect dimensional tolerances
• 1/2-inch flute length suited for shallow finishing passes

Compatibility

Designed as an OEM-style chucking reamer for use in standard drill chucks, ER collet systems, and similar straight-shank toolholders on drill presses, lathes, and machining centers.

Installation Notes

Installation and use of this reamer should be performed by qualified machinists or toolroom technicians. Always power down and lock out the machine spindle before mounting or removing the tool from the chuck or collet. Ensure the shank is fully seated and the chuck is tightened securely before operation. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore finish quality.