Hertel 72039076 Chucking Reamer 0.9070 in Hss 8 Flute

Product Description

The HERTEL 72039076 is a high-speed steel (HSS) chucking reamer designed to finish-size drilled or bored holes to a precise 0.9070-inch diameter. With an overall length of 10 inches and a 2-5/8-inch straight flute length, this reamer handles medium-depth through-hole and blind-hole finishing operations in machine shop and production environments. The straight-cylindrical shank seats securely in standard drill chucks or collets. The bright, uncoated finish suits general-purpose applications where surface coating is not required. Eight flutes distribute cutting load evenly, improving hole finish and dimensional accuracy. Installation is performed by machinists and tooling technicians on lathes, drill presses, and machining centers.

This chucking reamer falls within the 0.7000- to 0.9999-inch decimal inch reamer diameter range, making it suitable for finish-reaming holes in ferrous and non-ferrous materials in both jobbing and production settings. It is used wherever a drilled hole must be brought to a tight dimensional tolerance and smooth surface finish. Right-hand cutting direction is standard for conventional machine-spindle rotation. The straight flute geometry is well suited to interrupted cuts and materials that produce discontinuous chips.

Key Features

• 0.9070-inch finished bore diameter for precision hole sizing
• HSS construction provides toughness across a wide range of workpiece materials
• 8 straight flutes for even load distribution and improved surface finish
• Straight-cylindrical shank fits standard drill chucks and collets
• Bright/uncoated finish — no coating interference on close-tolerance applications
• Right-hand cutting direction for standard spindle rotation

Compatibility

Designed as an OEM-style chucking reamer for use in any machine spindle accepting a straight-cylindrical shank within the 0.9070-inch diameter class.

Installation Notes

A licensed machinist or tooling technician should install this reamer in a properly aligned chuck or collet, ensuring the shank is fully seated and runout is minimized before cutting. Power down the machine spindle and lock out energy sources before changing tooling. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain hole finish. Follow shop-floor tooling procedures and applicable OSHA machine-guarding requirements during setup and operation.