Hertel 72025307 Chucking Reamer 0.2530 in Hss 6 Flute

Product Description

The HERTEL 72025307 is a straight-flute chucking reamer designed for precision hole finishing in metal and other machinable materials. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers consistent bore accuracy in drilling and machining applications. The reamer measures 0.2530 inches in diameter with a 6-inch overall length and a 1.5-inch flute length. The straight-cylindrical shank seats securely in standard drill chucks and collet holders. With 6 flutes and a right-hand cutting direction, this tool produces smooth, close-tolerance finishes in through-holes and blind bores. Machinists and toolroom technicians rely on this style for production and repair work requiring precise final sizing.

This chucking reamer is suited for use on manual lathes, drill presses, CNC turning centers, and machining centers. It is appropriate for finishing pre-drilled holes to a 0.2530-inch diameter where tight dimensional tolerances are required. Typical applications include fixture alignment holes, bearing bores, and bushing fits in both job-shop and production environments. The HSS construction handles a wide range of workpiece materials, including mild steel, aluminum, brass, and cast iron, at moderate cutting speeds.

Key Features

• 0.2530-inch reamer diameter for precise final bore sizing
• High-speed steel (HSS) construction resists wear across a broad range of materials
• Bright, uncoated finish — no coating buildup interference at the cutting edge
• 6 straight flutes with right-hand cutting direction for smooth, controlled stock removal
• Straight-cylindrical shank compatible with standard drill chucks and collet holders
• 6-inch overall length provides clearance depth for most standard workholding setups

Compatibility

Designed as a standard chucking reamer for use in any machine tool accepting a straight-cylindrical shank in the appropriate diameter range, including drill presses, lathes, and machining centers.

Installation Notes

Chucking reamers are installed by machinists and toolroom technicians. Ensure the machine spindle and workpiece are properly aligned before engaging the reamer to prevent bell-mouthing or chatter. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Remove only the recommended stock allowance — typically 0.005 to 0.015 inches for HSS reamers — based on your specific setup; do not use values not confirmed for your application.