Hertel 72027956 Chucking Reamer 0.2795 in Hss 6 Flute

Product Description

The HERTEL 72027956 is a straight-flute chucking reamer designed to finish-ream drilled or bored holes to a precise 0.2795-inch diameter. Machined from high-speed steel (HSS) with a bright, uncoated finish, it delivers accurate sizing in ferrous and non-ferrous materials across general machining applications. The straight-cylindrical shank is compatible with standard drill chucks and collet holders. With six flutes and a right-hand cutting direction, the tool produces a smooth bore finish while maintaining concentricity. Overall length is 6 inches with a 1.5-inch flute length, keeping the tool rigid during finishing passes.

This reamer is suited for machine shop, production, and maintenance environments where hole finishing to a tight tolerance is required. It is typically used in drill presses, lathes, and CNC machining centers. The 0.2795-inch diameter falls within the 0.2500-to-0.2999-inch decimal inch range, making it a common selection for finish-reaming holes in jigs, fixtures, and close-tolerance assemblies. Installation is performed by machinists and tool-and-die professionals working in both job-shop and production settings.

Key Features

• 0.2795-inch finished bore diameter for precise hole sizing
• High-speed steel (HSS) construction for durability across a range of workpiece materials
• Bright, uncoated finish suitable for general-purpose reaming
• Six straight flutes with right-hand cutting direction for smooth, concentric bores
• Straight-cylindrical shank compatible with standard chucks and collet holders
• 6-inch overall length with 1.5-inch flute length for rigidity in finishing operations

Compatibility

Designed as a standard chucking reamer for use in drill presses, lathes, and CNC machining centers equipped with drill chucks or collet holders accepting a straight-cylindrical shank.

Installation Notes

Chucking reamers are installed and operated by machinists. Secure the straight-cylindrical shank firmly in a drill chuck or collet before use, and verify runout before beginning a finishing pass. Always use appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Inspect the reamer for chipping or wear before each use and do not attempt to remove excess stock in a single pass beyond the tool's intended finishing allowance.