Hertel 72025059 Chucking Reamer 0.2505 in Hss Straight

Product Description

The HERTEL 72025059 is a high-speed steel (HSS) chucking reamer designed to finish-size drilled or bored holes to tight tolerances. With a cutting diameter of 0.2505 inches, a 6-inch overall length, and a 1.5-inch straight flute, this reamer is built for precision hole finishing in ferrous and non-ferrous materials. The bright, uncoated HSS construction offers good toughness across general-purpose machining applications. Six straight flutes and a right-hand cutting direction provide clean, consistent stock removal. The straight-cylindrical shank allows direct chucking in standard drill chucks, collets, or floating holders.

This reamer is suited for production and maintenance machining environments where hole diameter accuracy and surface finish are critical. Typical applications include sizing holes for dowel pins, bushings, bearings, and precision-fit fasteners in job shops, machine shops, and maintenance-repair-operations settings. The 0.2505-inch diameter falls within the 0.2500 to 0.2999-inch decimal inch range, making it appropriate for finishing holes in that size class across a range of workpiece materials.

Key Features

• 0.2505-inch cutting diameter for tight-tolerance hole finishing
• HSS construction provides toughness for general-purpose machining
• 6-inch overall length suits standard machine spindle reach
• Six straight flutes with right-hand cutting direction
• Straight-cylindrical shank for compatibility with common chucking systems
• Bright, uncoated finish — no coating buildup concerns on reground edges

Compatibility

Designed as an OEM-style chucking reamer suitable for use in CNC machining centers, drill presses, and lathes equipped with standard straight-bore chucks or collet holders accepting a straight-cylindrical shank in this diameter range.

Installation Notes

Chucking reamers are installed by machinists or tooling technicians in machine spindles using an appropriate drill chuck, collet, or floating reamer holder. Ensure the machine is at a full stop and power is isolated before changing tooling. Use the correct cutting speed and feed rate for the workpiece material and apply cutting fluid as appropriate to maximize tool life and surface finish. Avoid hand-feeding at excessive rates, as this can cause chatter or bell-mouthing of the finished hole.