Hertel 72308158 Chucking Reamer Wire Size 15 Cobalt

Product Description

The HERTEL 72308158 is a straight-flute chucking reamer designed for precision hole finishing in metalworking applications. Built from cobalt steel, this reamer delivers the heat and wear resistance needed when working with tough alloys and harder ferrous materials. It produces a finished bore diameter of 0.1800 inches, corresponding to wire size 15, with an overall length of 4.5 inches and a flute length of 1.125 inches. The straight-cylindrical shank seats securely in standard drill chucks or collet holders. The bright, uncoated finish maintains dimensional accuracy and allows easy inspection of cutting edge condition. Machinists, toolmakers, and CNC operators typically use this tool for accurate final sizing of drilled or bored holes.

This chucking reamer is suited for manual machine operations, turret lathes, drill presses, and CNC machining centers where a straight-flute reamer in the 0.1500 to 0.1999 inch diameter range is required. Right-hand cutting direction makes it compatible with standard right-hand spindle rotation. The compact overall length and straight shank simplify setup in tight work envelopes. It is not an over or under size reamer, meaning it is ground to the nominal 0.1800 inch dimension for standard tolerance hole finishing.

Key Features

• Cobalt steel construction for improved heat resistance over standard high-speed steel
• Straight flute geometry for smooth cutting action in through-holes and blind holes with chip clearance
• 0.1800 inch finished bore diameter, wire size 15
• Right-hand cutting direction for standard spindle rotation
• Straight-cylindrical shank for direct chuck or collet mounting
• Bright, uncoated finish for precise dimensional tolerances out of the box

Compatibility

Designed as a standard chucking reamer for use in drill presses, lathes, and machining centers accepting a straight-cylindrical shank tool in the 0.1500 to 0.1999 inch diameter range.

Installation Notes

A licensed machinist or qualified toolroom operator should install and operate this reamer using appropriate cutting fluid for the workpiece material. Secure the straight-cylindrical shank fully in the chuck or collet before operation and verify runout with a dial indicator to prevent bell-mouthing or chatter. Always reduce feed rate and spindle speed relative to drilling operations; reaming typically runs at approximately one-half the drilling speed for the same material. Do not reverse spindle rotation while the reamer is engaged in the hole, as this will damage the cutting edges.