Hertel 72291313 Chucking Reamer 31/64 in Hss 6 Flute

Product Description

The HERTEL 72291313 is a straight-flute chucking reamer designed to finish-ream drilled or bored holes to a precise diameter of 0.4844 inches (31/64 inch). Built from high-speed steel (HSS), it delivers consistent cutting performance across a range of ferrous and non-ferrous workpiece materials. The 6-flute geometry distributes cutting load evenly, producing a smooth bore finish with tight dimensional control. At 5-7/8 inches overall length with a 2-inch flute length, this reamer fits standard drill chuck or collet setups. It is used by machinists, tool-and-die makers, and maintenance technicians requiring reliable hole finishing on manual or CNC machine tools.

This chucking reamer is suited for machine shop, production, and maintenance-repair-operations (MRO) environments. The straight-cylindrical shank seats directly in a drill chuck or collet holder on a drill press, lathe, or milling machine. The straight flute design works well in through-holes and short blind holes where chip evacuation is manageable. It is appropriate for finishing holes in the 0.4000 to 0.4999 inch diameter range where the 31/64-inch finished size is required.

Key Features

• 0.4844 inch (31/64 inch) finished reamer diameter for precise bore sizing
• High-speed steel (HSS) construction for durability across common workpiece materials
• 6-flute straight configuration for smooth surface finish and even load distribution
• 2-inch flute length suitable for through-holes and short blind holes
• Straight-cylindrical shank for direct mounting in drill chucks or collet holders
• 5-7/8 inch overall length compatible with standard machine setups

Compatibility

Designed as an OEM-style machine reamer for use in drill presses, lathes, and milling machines accepting a straight-cylindrical shank tool in the 0.4000 to 0.4999 inch diameter reamer range.

Installation Notes

Chucking reamers are installed by qualified machinists or toolroom technicians. Power down and lock out the machine before mounting or removing the tool from the chuck or collet. Ensure the shank is fully seated and the chuck or collet is properly tightened before operation. Use appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality.