Hertel 72290273 Chucking Reamer Wire 27 0.1440 in Hss

Product Description

The HERTEL 72290273 is a straight-flute chucking reamer designed to finish-ream holes to a precise wire gauge No. 27 diameter of 0.1440 inches. Built from high-speed steel (HSS) with a bright, uncoated finish, this reamer delivers accurate sizing in soft to medium-hardness metals. The straight-cylindrical shank seats securely in a drill chuck or collet, and the four-flute right-hand cutting geometry produces a smooth bore finish with consistent chip evacuation. At 3 inches overall length with a 1-inch flute length, it is well-suited for shallow-to-moderate depth finishing passes in production and maintenance machining environments.

This reamer is used in metal fabrication shops, maintenance and repair operations, and light production environments where wire-gauge hole tolerances are required. It is installed in a drill press, CNC machining center, or manual lathe using a standard drill chuck or collet sized to accept a straight-cylindrical shank. Typical applications include finishing drilled holes in aluminum, mild steel, brass, and similar machinable alloys where close dimensional control is needed.

Key Features

• Wire size No. 27 diameter: 0.1440 inches for precision hole finishing
• High-speed steel (HSS) construction for durability across a range of machinable metals
• Four straight flutes with right-hand cutting direction for smooth, consistent stock removal
• Bright uncoated finish suitable for use with standard cutting fluids
• Straight-cylindrical shank for reliable grip in drill chucks and collets
• Compact 3-inch overall length for use in space-constrained setups

Compatibility

Designed as a standard chucking reamer for use in any drill press, lathe, or machining center that accepts a straight-cylindrical shank tool in the corresponding diameter range.

Installation Notes

This reamer is installed by machinists or tool and die technicians. Always power down and lock out the machine before loading or removing tooling. Secure the straight-cylindrical shank fully in the chuck or collet to prevent runout. Use an appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish quality.