Hertel 72290521 Chucking Reamer Size 52 Hss 4 Flute

Product Description

The HERTEL 72290521 is a wire-gauge chucking reamer designed for precision hole finishing in metal components. Built from high-speed steel (HSS) with a bright uncoated finish, this reamer produces accurate, smooth bores at wire size 52, corresponding to a decimal diameter of 0.0635 inches. The straight 4-flute geometry and right-hand cutting direction deliver consistent material removal in drill press, lathe, and CNC applications. At 1-7/8 inches overall length with a 1/2-inch flute length, this is a compact tool suited for shallow, tight-tolerance reaming operations in small-diameter bores.

This chucking reamer is intended for use in machine tool setups where the workpiece or tool is held in a chuck or collet. It is well suited for general machining environments including job shops, tool rooms, and production lines working with ferrous and non-ferrous metals. The straight-cylindrical shank seats securely in standard chucks and collets, making setup straightforward for machinists and tool-and-die professionals. It is typically used as a finishing step after drilling to bring a hole to final size and surface quality.

Key Features

• Wire size 52 diameter — 0.0635 inches decimal equivalent for precise small-bore finishing
• High-speed steel (HSS) construction for durability across a range of metals
• 4-flute straight geometry for stable, consistent cutting action
• Right-hand cutting direction — standard for most machine tool setups
• Straight-cylindrical shank for compatibility with standard chucks and collets
• Bright uncoated finish — no coating buildup concerns in sensitive tolerance applications

Compatibility

Designed as an OEM-style chucking reamer for use in machine tool setups requiring wire size 52 hole finishing with a straight-cylindrical shank.

Installation Notes

Chucking reamers are installed by machinists in lathes, drill presses, or CNC machining centers. Secure the straight-cylindrical shank firmly in a chuck or collet before use and ensure the workpiece is clamped. Always bring the hole to near-final size by drilling before reaming — do not use this tool as a primary hole-making cutter. Use appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish.