Hertel 83246892 Chucking Reamer 27/64 in Solid Carbide

Product Description

The HERTEL 83246892 is a solid carbide chucking reamer designed for precision hole finishing in machine tool applications. With a 27/64 inch (0.4219 inch decimal) diameter and a tight diameter tolerance of 0.0000 to 0.0003 inches, this reamer delivers accurate, close-tolerance bores in a single pass. The straight flute geometry and right-hand cutting direction suit it for finishing pre-drilled holes in a wide range of materials. Six flutes provide a smooth finish and efficient chip clearance. The bright, uncoated carbide surface is well suited for use with cutting fluids in precision machining environments. Machinists and CNC operators working in job shops, production facilities, or toolrooms are the primary users of this tool.

This chucking reamer is used in drill press, lathe, or CNC machining center applications where consistent bore diameter and surface finish are required. The straight cylindrical shank allows it to mount directly in standard drill chucks, collets, or toolholders. At 4 inches overall length with a 1-3/8 inch flute length, it is sized for short-to-medium depth holes in ferrous and non-ferrous workpieces. It is not configured as a dowel pin reamer and is not an over/under size reamer, making it a standard on-size finishing tool.

Key Features

• Solid carbide construction for rigidity and wear resistance in precision reaming
• 27/64 inch diameter with 0.0000 to 0.0003 inch tolerance for tight bore control
• Six straight flutes for smooth finish and consistent chip evacuation
• Right-hand cutting direction compatible with standard spindle rotation
• Bright/uncoated finish suitable for use with cutting fluids
• Straight cylindrical shank for direct chuck or collet mounting

Compatibility

Designed as a standard on-size chucking reamer for use in drill presses, lathes, and CNC machining centers equipped with a drill chuck, ER collet, or straight-shank toolholder sized for a 27/64 inch shank.

Installation Notes

This tool is installed and operated by machinists or CNC technicians. Ensure the machine spindle is fully stopped and locked out before mounting or removing the reamer. The workpiece hole should be pre-drilled or bored undersize before reaming to allow proper stock removal. Use an appropriate cutting fluid for the workpiece material to extend tool life and improve bore finish.