Hertel 72036395 Chucking Reamer 0.6390 in Hss 8 Flute

Product Description

The HERTEL 72036395 is a high-speed steel (HSS) chucking reamer designed to finish-ream holes to a precise diameter of 0.6390 inches. With an overall length of 9 inches and a straight-cylindrical shank, it is built for use in machine spindles and drill press chucks where controlled, repeatable bore sizing is required. The 8-flute, right-hand cutting configuration with a straight flute geometry promotes smooth material removal and a fine surface finish in the reamed bore. The bright, uncoated finish is standard for general-purpose HSS reamers. This tool is used by machinists and toolroom technicians working in production and maintenance environments.

This chucking reamer is suited for finish-reaming operations in metalworking applications where close-tolerance hole sizing is needed. The 2.25-inch flute length accommodates typical bore depths encountered in machine components, fixtures, and mechanical assemblies. The straight-cylindrical shank allows direct mounting in standard drill chucks, collets, or floating reamer holders on lathes, drill presses, and CNC machining centers. Its right-hand cutting direction is compatible with conventional clockwise spindle rotation.

Key Features

• 0.6390-inch finished bore diameter for close-tolerance hole sizing
• 8 straight flutes with right-hand cutting direction for smooth stock removal
• 9-inch overall length with a 2.25-inch flute length
• HSS construction offers toughness across a broad range of workpiece materials
• Bright, uncoated finish — standard for general-purpose reaming applications
• Straight-cylindrical shank fits standard chucks, collets, and floating holders

Compatibility

Designed as a general-purpose chucking reamer for use in standard drill chucks, collets, and floating reamer holders on lathes, drill presses, and machining centers that accept a straight-cylindrical shank tooling.

Installation Notes

Chucking reamers are installed and operated by machinists using appropriate machine tooling and work-holding equipment. Ensure the spindle and workpiece are securely fixtured before reaming. Always bring the reamer into the pre-drilled pilot hole with the spindle running at the correct speed and feed for the workpiece material — never rotate a reamer in reverse, as this dulls the cutting edges. Use appropriate cutting fluid to extend tool life and achieve the target surface finish.