Hertel 72020209 Chucking Reamer 0.2020 in Hss 6 Flute

Product Description

The HERTEL 72020209 is a straight-flute chucking reamer designed for precision hole finishing in metal components. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers accurate sizing and smooth bore surfaces in a wide range of drilling and boring applications. The reamer measures 0.2020 inches in diameter with a 5 inch overall length and a 1.25 inch flute length. The straight-cylindrical shank seats securely in standard drill chucks or collets. With 6 flutes and a right-hand cutting direction, it produces consistent, clean finishes suitable for close-tolerance work in production or maintenance environments.

This chucking reamer is used in machine shop, manufacturing, and maintenance applications where a drilled hole must be brought to a precise final diameter. It is appropriate for use in drill presses, lathes, CNC machining centers, and manual milling machines. Typical applications include bearing seat preparation, bushing installation, and pin-fit work in ferrous and non-ferrous materials. The 0.2020 inch diameter falls within the 0.2000 to 0.2499 inch reamer diameter range, making it a go-to tool for fine-tolerance finishing in that size class.

Key Features

• 0.2020 inch cutting diameter for precise hole finishing
• HSS construction provides durability across a range of workpiece materials
• 6 straight flutes with right-hand cutting direction for smooth, consistent bore finish
• Bright uncoated finish suitable for general-purpose reaming without added coating friction
• Straight-cylindrical shank compatible with standard drill chucks and collets
• Compact 5 inch overall length suits most machine setups

Compatibility

Designed as a standard chucking reamer for use in drill presses, lathes, milling machines, and CNC machining centers that accept straight-cylindrical shank tooling.

Installation Notes

Chucking reamers are installed and operated by machinists and toolroom technicians. Secure the straight-cylindrical shank firmly in a drill chuck or collet before use, and verify runout before cutting. Always ream at reduced speed compared to drilling, and use an appropriate cutting fluid for the workpiece material. Never force the reamer through an undersized hole — ensure the pre-drilled hole is within the recommended allowance for the target diameter.