Hertel 72297062 Chucking Reamer Letter F Hss 6 Flute

Product Description

The HERTEL 72297062 is a 6-flute HSS chucking reamer sized to Letter F (0.2570 inches diameter), designed for precision hole finishing in metalworking applications. Built from high-speed steel with a right-hand spiral flute configuration, it delivers consistent bore accuracy and smooth surface finishes in production and job-shop environments. The straight-cylindrical shank allows direct mounting in standard chucks and collets on drill presses, lathes, and CNC machining centers. With an overall length of 4.125 inches and a flute length of 1.5 inches, it is suited for moderate-depth holes in ferrous and non-ferrous materials. Machinists and tool-and-die professionals are the primary users of this type of reamer.

This reamer is intended for finish-reaming drilled or bored holes to a precise Letter F diameter of 0.2570 inches. It fits standard production workflows where tight hole tolerances are required, such as pin fits, bushing bores, and dowel holes in machined components. The 6-flute geometry provides more cutting edges than a basic 4-flute design, reducing chatter and improving finish quality at moderate feed rates. Suitable for use in both manual and CNC machine tool setups across light manufacturing and maintenance machining environments.

Key Features

• Letter F diameter (0.2570 inches) for precise finish reaming to tight tolerances
• 6-flute right-hand spiral design reduces chatter and improves bore surface finish
• HSS construction provides adequate hardness and toughness for general-purpose metalworking
• Straight-cylindrical shank compatible with standard drill chucks and collets
• Compact overall length of 4.125 inches suits typical production hole depths
• Single-piece packaging with minimum order quantity of 1 unit

Compatibility

Designed as an OEM-style replacement or direct-fit chucking reamer for any drill press, lathe tailstock, or CNC machining center equipped with a chuck or collet accepting a straight-cylindrical shank in the Letter F diameter range.

Installation Notes

Chucking reamers of this type are installed by machinists or toolroom technicians into a rotating spindle chuck or collet. Ensure the machine spindle is fully stopped and locked out before changing tooling. The workpiece hole should be pre-drilled or bored to within approximately 0.005 to 0.015 inches of finished size before reaming; do not attempt to remove excess stock with a reamer. Use appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish.