Hertel 72296577 Chucking Reamer 0.3745 in Hss 6 Flute

Product Description

The HERTEL 72296577 is a high-speed steel (HSS) chucking reamer designed to produce precise, finished bores in metalworking applications. With a reamer diameter of 0.3745 inches, this tool is spec'd as a dowel pin reamer, meaning it is ground to exact tolerances for close-fit hole finishing. The spiral flute geometry, right-hand cutting direction, and bright uncoated finish make it a standard choice for machinists and tool-and-die technicians who need consistent hole quality in ferrous and non-ferrous materials. It seats into any standard drill chuck or collet via its straight-cylindrical shank and is ready to run without additional tooling adapters.

This reamer is suited for production and maintenance machining environments where precise bore sizing is required. It is commonly used in machine shops, toolrooms, and manufacturing cells for reaming pre-drilled holes to final diameter. The 0.3745-inch size corresponds directly to dowel pin fitment work, making it a practical selection for fixture building, jig plates, and precision assembly applications. The 1-3/4 inch flute length accommodates typical material stack depths encountered in bench and CNC operations.

Key Features

• 0.3745-inch diameter ground to dowel pin tolerance for close-fit bore finishing
• 6-flute spiral configuration for smooth cutting action and improved chip evacuation
• Right-hand cutting and right-hand spiral direction for standard spindle operation
• Straight-cylindrical shank fits standard drill chucks, collets, and floating holders
• Bright uncoated HSS construction suitable for a wide range of common workpiece materials
• 5-inch overall length with 1-3/4-inch flute length for versatile depth reach

Compatibility

Designed as a standard straight-shank chucking reamer compatible with drill presses, manual mills, CNC machining centers, and lathes equipped with appropriate chuck or collet tooling that accepts a straight-cylindrical shank.

Installation Notes

Chucking reamers should be installed by qualified machinists following proper machine lockout and spindle-stop procedures before tool changes. Ensure the shank is fully seated and secure in the chuck or collet before operation. Always ream from a pre-drilled undersized pilot hole and use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore quality. Do not use this reamer for rough material removal.