Hertel 79889507 Chucking Reamer 0.135 in Solid Carbide

Product Description

The HERTEL 79889507 is a solid carbide chucking reamer designed for precision hole finishing in metalworking and machining operations. With a 0.135-inch diameter and a tight tolerance of 0.0000 to 0.0002 inches, this reamer delivers accurate, consistent bore sizing in a single pass. The four-flute straight configuration provides smooth cutting action, while the bright uncoated carbide surface suits a wide range of workpiece materials. At 2.5 inches overall length with a 0.75-inch flute length and a straight cylindrical shank, it is sized for use in CNC machining centers, drill presses, and manual lathes where chuck or collet holding is standard.

This chucking reamer is suited for production and job-shop environments requiring precise hole finishing in ferrous and non-ferrous metals. The straight shank makes it compatible with standard drill chucks and collet holders. The right-hand cutting direction and straight flutes work well in through-holes and shallow blind holes where chip evacuation is manageable. It is typically installed by machinists and tool-and-die professionals performing close-tolerance bore work on fixtures, jigs, and machined components.

Key Features

• 0.135-inch diameter with a tolerance of 0.0000 to 0.0002 inches for precision hole sizing
• Solid carbide construction for rigidity and wear resistance in demanding cutting conditions
• Four-flute straight configuration for smooth, consistent material removal
• Right-hand cutting direction suited to standard machine spindle rotation
• Bright uncoated finish compatible with a broad range of cutting fluids and workpiece materials
• Straight cylindrical shank fits standard drill chucks and collet holders without special tooling

Compatibility

Designed as an OEM-style chucking reamer for use in standard drill chucks and collet-style toolholders on CNC machining centers, drill presses, and manual lathes requiring straight-shank tooling in the 0.1000 to 0.1499-inch diameter range.

Installation Notes

Chucking reamers should be installed by qualified machinists following shop safety procedures. Ensure the machine spindle is fully stopped and locked out before changing tooling. Secure the straight shank firmly in a properly sized collet or chuck to prevent runout, which directly affects hole tolerance. Always apply appropriate cutting fluid for the workpiece material and avoid hand-reaming with machine reamers, as feed rates and speeds must be controlled mechanically to achieve the rated tolerance.