Hertel 72020308 Chucking Reamer 0.2030 in Hss 6 Flute

Product Description

The HERTEL 72020308 is a high-speed steel (HSS) chucking reamer designed to finish-bore holes to a precise 0.2030-inch diameter. With a straight-cylindrical shank and six straight flutes, this reamer delivers consistent dimensional accuracy in drilling and boring operations on metalworking lathes, drill presses, and machining centers. The bright, uncoated finish suits general-purpose ferrous and non-ferrous stock removal. Overall length is 5 inches with a flute length of 1-1/4 inches. Right-hand cutting direction. Weighing 0.15 pounds, it is a standard stock item for machine shops and maintenance operations requiring tight-tolerance hole finishing.

This reamer is suited for production and maintenance machining environments where hole finish and diameter consistency are critical. Typical applications include finishing drilled or bored holes in steel, cast iron, aluminum, and similar machinable materials. The straight-cylindrical shank seats directly in standard drill chucks, collet chucks, or machine tool spindles without requiring a special adapter. It is appropriate for low-to-moderate speed reaming passes where the final hole diameter must meet close-tolerance fits for dowels, pins, bearings, or similar close-fit assemblies.

Key Features

• 0.2030-inch finished hole diameter for close-tolerance fit applications
• HSS construction provides toughness across a broad range of machinable materials
• 6 straight flutes for smooth, consistent chip evacuation and finish
• Right-hand cutting direction compatible with standard machine spindle rotation
• Straight-cylindrical shank seats in drill chucks and collet holders without adapters
• Bright, uncoated finish suitable for general-purpose shop use

Compatibility

Designed as an OEM-style replacement or standard stock chucking reamer for use in drill presses, lathes, and machining centers equipped with chucks or collet systems that accept straight-cylindrical shank tooling.

Installation Notes

Chucking reamers are installed by qualified machinists or toolroom technicians. Secure the shank firmly in a drill chuck or collet before use and verify runout is within acceptable limits. Always power down and lock out the machine spindle before changing tooling. Reaming should follow a pre-drilled or bored pilot hole; do not use a chucking reamer to remove excessive stock in a single pass.