Hertel 72037047 Chucking Reamer 0.7040 in 9 in Oal Hss

Product Description

The HERTEL 72037047 is a straight-flute chucking reamer designed for precision hole finishing in metal fabrication, machining, and toolroom applications. Built from high-speed steel (HSS) with a bright, uncoated finish, this reamer produces accurate, smooth bores to a finished diameter of 0.7040 inches. The straight-cylindrical shank seats securely in standard drill chucks and collet holders. With 8 flutes and a right-hand cutting direction, it delivers consistent stock removal and surface finish across a range of workpiece materials. Overall length is 9 inches, and the flute length measures 2.25 inches. At 0.23 pounds, it is a compact, precise tool suited for use in manual and CNC machine setups.

This chucking reamer is used in machine shops, maintenance facilities, and production environments where a final-pass reaming operation is required to bring a drilled or bored hole to close tolerance. Typical applications include finishing holes in ferrous and non-ferrous metals where a standard 0.7040-inch finished diameter is specified. The straight flute geometry makes it well-suited for through-holes and materials that produce short, broken chips. It is installed in drill presses, lathes, machining centers, and hand-held chucks by machinists, tool and die makers, and maintenance technicians.

Key Features

• 0.7040 inch finished reamer diameter for precision hole sizing
• 8 straight flutes with right-hand cutting direction for consistent, smooth stock removal
• High-speed steel (HSS) construction provides toughness and wear resistance in general machining applications
• Bright, uncoated finish — ready for use with standard cutting fluids and coolants
• Straight-cylindrical shank for direct mounting in drill chucks, collet holders, or floating holders
• 9 inch overall length with 2.25 inch flute length for standard through-hole and shallow blind-hole reach

Compatibility

Designed as an OEM-style chucking reamer for use in standard drill chucks and collet systems accepting a straight-cylindrical shank; suitable for drill presses, lathes, and machining centers requiring a 0.7040 inch finished bore diameter.

Installation Notes

Chucking reamers are installed and operated by qualified machinists following standard shop safety procedures. Ensure the machine spindle is fully stopped and the workpiece is securely clamped before mounting or removing the reamer. Always apply an appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Do not use a chucking reamer to remove excessive stock — pre-drill or bore the hole to within the recommended allowance before reaming.