Hertel 72034424 Chucking Reamer 0.4420 in Hss 6 Flute

Product Description

The HERTEL 72034424 is a straight-flute chucking reamer designed to bring bored or drilled holes to a precise finished diameter. Built from high-speed steel (HSS) with a bright, uncoated finish, this reamer delivers consistent 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 0.4420-inch cutting diameter, a 7-inch overall length, and a 1.75-inch flute length, it is well suited for production and maintenance machining operations where close-tolerance hole finishing is required.

This chucking reamer is used in machine shop, toolroom, and maintenance environments where holes must be finished to a tight diameter tolerance after drilling or boring. It is suited for use in vertical mills, drill presses, lathes, and CNC machining centers. The right-hand cutting direction and straight flute geometry make it effective on through-holes in steel, cast iron, aluminum, and similar machinable materials. Machinists and toolroom technicians are the primary users of this tool type.

Key Features

• 0.4420-inch finished diameter within the 0.4000 to 0.4999-inch decimal inch reamer range
• High-speed steel (HSS) construction for durability across a broad range of workpiece materials
• Bright, uncoated finish suitable for use with cutting fluids on most common metals
• 6-flute straight design provides smooth cutting action and good surface finish in through-holes
• Right-hand cutting direction, compatible with standard spindle rotation
• Straight-cylindrical shank fits standard drill chucks and collet holders without adapters

Compatibility

Designed as a standard chucking reamer for use in any machine tool spindle accepting a straight-cylindrical shank, including drill presses, vertical mills, lathes, and CNC drilling centers.

Installation Notes

Installation and use of this reamer should be performed by a qualified machinist or toolroom technician. Secure the straight-cylindrical shank fully in the chuck or collet before operation and verify runout before cutting. Always apply appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality. Never use a chucking reamer to remove excessive stock — pre-drill or bore to within a few thousandths of the finished diameter before reaming.