Hertel 79891131 Chucking Reamer Letter P Solid Carbide

Product Description

The HERTEL 79891131 is a solid carbide chucking reamer in Letter P size, ground to a decimal diameter of 0.3230 inches. It is designed to bring pre-drilled or bored holes to a precise finished diameter with tight dimensional control. The 6-flute straight configuration provides smooth, even cutting action, while the bright, uncoated carbide surface suits general-purpose reaming applications. With a diameter tolerance of 0.0000 to 0.0003 inches, this tool is suited to work where hole quality and consistency matter. It has a straight cylindrical shank for direct chuck mounting and is ground for right-hand cutting. Machinists and toolroom professionals install this reamer in drill presses, lathes, and CNC machining centers.

This chucking reamer is used in metalworking operations where a hole must be brought to a final finished size with close tolerance. The Letter P designation covers the 0.3000 to 0.3499 inch diameter range, with this specific tool ground to 0.3230 inches. Typical applications include production machining, toolroom work, and fixture-plate hole finishing. The solid carbide construction makes it well-suited for harder workpiece materials and high-cycle production environments where tool life and dimensional repeatability are priorities.

Key Features

• Letter P size, ground to 0.3230 inches decimal diameter
• Diameter tolerance of 0.0000 to 0.0003 inches for precise hole finishing
• 6-flute straight configuration for smooth, consistent cutting action
• Solid carbide construction for extended tool life in demanding materials
• Bright, uncoated finish — suitable for general-purpose and non-ferrous applications
• Straight cylindrical shank for direct mounting in standard drill chucks or collets
• Right-hand cut direction

Compatibility

Designed as an OEM-style chucking reamer for use in standard drill chucks, collet holders, and floating reamer holders on drill presses, lathes, and machining centers that accept a straight cylindrical shank.

Installation Notes

This tool is installed and serviced by machinists and toolroom technicians. Secure the straight shank firmly in a true-running chuck or collet to minimize runout before use. Ensure the workpiece and fixture are rigidly clamped prior to reaming. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain hole finish quality.