Hertel 72038748 Chucking Reamer 0.8740 in Hss 8 Flute

Product Description

The HERTEL 72038748 is a straight-flute chucking reamer designed for precision hole finishing in machine shop and industrial applications. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers consistent bore sizing at 0.8740 inches diameter. The straight-cylindrical shank seats securely in drill press chucks, CNC lathes, and boring setups. Eight right-hand cutting flutes distribute cutting load evenly, reducing chatter and improving surface finish in through-holes and blind-hole finishing operations. Overall length is 10 inches with a 2-5/8 inch flute length, providing sufficient reach for typical workpiece depths while maintaining rigidity. Weight is 0.23 pounds.

This reamer is suited for production and maintenance machining environments where precise hole tolerances are required after drilling. It is appropriate for use on ferrous and non-ferrous materials in applications ranging from toolroom work to general manufacturing. The 0.8740 inch diameter falls within the 0.7000 to 0.9999 inch reamer diameter range, making it a standard selection for finishing bores to close tolerances in medium-to-large diameter work. Licensed machinists and tool-and-die professionals are the primary installers of this type of tooling.

Key Features

• 0.8740 inch cutting diameter for precision bore finishing
• 8 straight flutes with right-hand cutting direction for smooth material removal
• HSS construction provides toughness across a wide range of workpiece materials
• Bright, uncoated finish — ready for use or post-treatment by the end user
• Straight-cylindrical shank for direct chuck or collet mounting
• 10 inch overall length with 2-5/8 inch flute length for reach without sacrificing rigidity

Compatibility

Designed as a standard chucking reamer for use in drill presses, CNC lathes, boring mills, and similar machine tool setups that accept a straight-cylindrical shank in the corresponding diameter range.

Installation Notes

Always power down and lock out the machine before mounting or removing the reamer. Seat the straight-cylindrical shank fully in the chuck or collet and confirm runout with a dial indicator before cutting. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Inspect flutes for wear or damage before each use — a chipped flute will compromise bore size and finish quality.