Hertel 79889754 Chucking Reamer 0.195 in Solid Carbide

Product Description

The HERTEL 79889754 is a solid carbide chucking reamer designed for precision hole finishing in metalworking and machining applications. With a 0.195 inch diameter and a tight tolerance of 0.0000 to 0.0002 inches, this reamer delivers accurate, repeatable bore sizing on machine tool setups. The straight flute geometry and right-hand cutting direction make it well-suited for through-holes and conventional CNC or manual drilling operations. At 3 inches overall length with a 1 inch flute length and a straight cylindrical shank, it mounts directly in standard drill chucks or collet holders without adapters. The bright, uncoated carbide substrate maintains sharpness across a range of workpiece materials.

This chucking reamer is used in production and job-shop machining environments where bore diameter accuracy is critical. Typical applications include finishing drilled or bored holes in ferrous and non-ferrous metals, plastics, and composites. The four-flute straight design provides smooth chip evacuation and consistent surface finish. It is installed and run by machinists on lathes, drill presses, CNC machining centers, and manual mills where a precise finished bore is required after a drill or boring operation.

Key Features

• Solid carbide construction for rigidity and wear resistance in precision reaming
• 0.195 inch diameter with a tolerance of 0.0000 to 0.0002 inches for tight bore accuracy
• Four straight flutes for consistent finish and smooth chip flow
• Right-hand cutting direction compatible with standard spindle rotation
• Straight cylindrical shank fits standard drill chucks and collet holders
• Bright, uncoated finish — no coating buildup affecting dimensional accuracy

Compatibility

Designed as an OEM-style replacement or standard tooling option for machines accepting straight-shank chucking reamers in the 0.1500 to 0.1999 inch diameter range.

Installation Notes

Installation is performed by qualified machinists. Power down and lock out the machine spindle before loading or unloading the reamer. Seat the straight shank fully and evenly in the chuck or collet to prevent runout. Use appropriate cutting fluid for the workpiece material, and do not exceed the reamer manufacturer-recommended feed and speed parameters for the substrate being machined.