Hertel 79889911 Chucking Reamer 0.254 in Solid Carbide

Product Description

The HERTEL 79889911 is a solid carbide chucking reamer designed for precision hole finishing in metal machining applications. With a reamer diameter of 0.254 inches and a tight tolerance of 0.0000 to 0.0003 inches, this tool delivers accurate, repeatable bore sizing in production and job-shop environments. The straight flute geometry and bright uncoated finish make it well suited for a range of ferrous and non-ferrous materials. The straight cylindrical shank provides secure seating in standard drill chucks and collet holders. At 0.05 pounds, it is lightweight and easy to handle during tool changes. Machinists and CNC operators working to close tolerance specifications will find this reamer reliable for consistent finishing results.

This chucking reamer is intended for finishing pre-drilled or bored holes to precise diameter in machine shop, maintenance, and production environments. The 3-inch overall length and 1-inch flute length suit shorter through-hole and blind-hole applications in fixtures, tooling, and mechanical assemblies. The right-hand cutting direction is compatible with standard spindle rotation. It is sold individually and is appropriate for use in manual mills, drill presses, and CNC machining centers.

Key Features

• Solid carbide construction for rigidity and wear resistance in precision finishing operations
• Reamer diameter of 0.254 inches with tolerance of 0.0000 to 0.0003 inches for tight bore accuracy
• 4-flute straight flute design for smooth, consistent material removal
• Bright uncoated finish suitable for a broad range of work materials
• Straight cylindrical shank for compatibility with standard chucks and collet holders
• Right-hand cut for use with standard spindle rotation

Compatibility

Designed as an OEM-style chucking reamer for use in drill chucks, ER collet holders, and similar straight-shank toolholding systems on manual and CNC machine tools requiring a 0.254-inch nominal bore diameter.

Installation Notes

Chucking reamers are installed and operated by machinists following standard toolholding procedures for the machine in use. Ensure the spindle is fully stopped and the machine is powered down before changing tools. The workpiece hole should be pre-drilled or bored to the appropriate undersize before reaming to avoid tool deflection or premature wear. Follow the machine manufacturer and tooling guidelines for feed rate and speed when finishing to close tolerances.