Hertel 72296783 Chucking Reamer 0.4990 in Hss 6 Flute

Product Description

The HERTEL 72296783 is a 6-flute high-speed steel (HSS) chucking reamer designed to finish-size drilled or bored holes to a precise 0.4990-inch diameter. The straight-cylindrical shank seats securely in standard drill chucks or collets, making it a practical choice for lathe, drill press, and milling machine work. With a 2-inch flute length and a 5-7/8-inch overall length, this reamer is sized for typical through-hole and blind-hole reaming operations. The bright, uncoated finish suits general-purpose use in steel, cast iron, aluminum, and similar workpiece materials. It is classified as an over/under size reamer, meaning the cutting diameter is intentionally offset from nominal for applications requiring a non-standard fit.

This chucking reamer is used in machine shops, maintenance facilities, and production environments where precise hole sizing is required. Right-hand spiral flutes with right-hand cutting direction help pull chips away from the cutting edge during operation, reducing chatter and improving surface finish. The straight-cylindrical shank makes it compatible with a wide range of standard machine toolholders. Machinists, tool and die makers, and maintenance technicians are the primary users for this type of tooling.

Key Features

• 0.4990-inch cutting diameter — over/under size classification for non-nominal hole fitting
• 6-flute spiral configuration with right-hand cutting direction for smooth chip evacuation
• HSS construction provides a balance of toughness and wear resistance for general machining
• Bright/uncoated finish suitable for use with cutting fluids across a range of workpiece materials
• Straight-cylindrical shank fits standard drill chucks and collet holders without adapters
• 5-7/8-inch OAL with 2-inch flute length covers typical hole depth requirements in production setups

Compatibility

Designed as a machine chucking reamer for use in lathes, drill presses, and milling machines equipped with standard straight-bore chucks or collets accepting a straight-cylindrical shank.

Installation Notes

This reamer is a machine tool and should be installed and operated by a qualified machinist or tooling technician. Secure the shank firmly in a properly sized chuck or collet before operation, and verify runout with a dial indicator when close tolerances are required. Always apply an appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality. Power down the machine and bring the spindle to a full stop before changing or inspecting the tool.