Hertel 79889655 Chucking Reamer 0.155 in Solid Carbide

Product Description

The HERTEL 79889655 is a solid carbide chucking reamer designed to produce precision-finished holes in metal workpieces. It features a straight flute geometry and a straight cylindrical shank, making it compatible with standard drill chucks and collet holders on mills, drill presses, and lathes. The reamer diameter is 0.155 inches with a tight tolerance of 0.0000 to 0.0002 inches, supporting accurate final bore sizing in applications where hole geometry and surface finish are critical. With four flutes and an uncoated bright finish, this tool is suited for general-purpose reaming in ferrous and non-ferrous materials where coolant or cutting fluid is applied directly.

This chucking reamer is used in machine shop, toolroom, and production environments where holes require sizing to close tolerances after drilling. The 0.75-inch flute length and 2.5-inch overall length make it appropriate for shallow-to-moderate depth reaming operations in workholding setups with limited clearance. Machinists, tool-and-die makers, and maintenance technicians working with precision bores will find this tool suitable for fixture work, bearing fits, and dowel pin hole finishing where a hand reamer cannot be driven at speed.

Key Features

• Solid carbide construction for hardness and wear resistance in demanding materials
• 0.155-inch diameter with 0.0000 to 0.0002-inch tolerance for precise bore sizing
• Four straight flutes for consistent chip evacuation and finish quality
• Straight cylindrical shank for direct chuck or collet mounting
• Right-hand cutting direction, standard for machine-driven reaming operations
• Uncoated bright finish suitable for use with standard cutting fluids

Compatibility

Designed as an OEM-style chucking reamer for use in standard drill chucks, ER collets, and similar straight-shank toolholding systems on drilling and milling machines.

Installation Notes

This reamer is intended for use by machinists operating drill presses, mills, or lathes. The workpiece should be secured in a vise or fixture and the hole pre-drilled to the appropriate undersize before reaming. Always apply cutting fluid during the reaming pass and avoid running the tool in reverse, as back-cutting can damage the flute edges. Machine speed should be set well below drilling RPM for the given material; consult a speeds-and-feeds reference for the specific workpiece material.