Hertel 2290088 Chucking Reamer 0.125 in 4 Flute Hss

Product Description

The HERTEL 2290088 is a straight-flute chucking reamer designed to bring drilled or bored holes to a precise finished diameter of 0.1250 inches. Manufactured from high-speed steel (HSS) with a bright, uncoated finish, this reamer delivers clean, accurate hole sizing in a wide range of ferrous and non-ferrous materials. The straight-cylindrical shank seats securely in standard drill chucks or collet holders. With a 4-flute configuration and right-hand cutting direction, it provides consistent chip clearance and smooth surface finishes across production and maintenance machining applications. Overall length is 3.5 inches with a flute length of 0.875 inches.

This chucking reamer is suited for machine shop, maintenance, and toolroom use where a 1/8-inch nominal bore finish is required. Typical applications include sizing holes in metal fixtures, tooling plates, and mechanical assemblies. It is installed in a drill press, CNC machining center, lathe tailstock, or any spindle that accepts a straight-cylindrical shank tool. Machinists and tool-and-die technicians commonly use this size for precision pin-fit and dowel-hole finishing operations.

Key Features

• 0.1250-inch finished bore diameter for precise hole sizing
• High-speed steel (HSS) construction for durability across common workpiece materials
• 4 straight flutes with right-hand cutting direction for smooth chip evacuation
• Bright uncoated finish — ready to use or accepts aftermarket coatings
• Straight-cylindrical shank for compatibility with standard drill chucks and collet holders
• Compact 3.5-inch overall length suited for close-clearance setups

Compatibility

Designed as an OEM-style chucking reamer for use in any machine spindle or chuck accepting a straight-cylindrical shank tool in the 1/8-inch nominal diameter class.

Installation Notes

Installation and use should be performed by a qualified machinist or tool-and-die technician. Power down and lock out the machine spindle before loading or removing the tool. Secure the straight-cylindrical shank fully within the chuck or collet to the recommended grip depth before operation. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore finish quality.