Hertel 72007750 Chucking Reamer 0.0775 in Hss

Product Description

The HERTEL 72007750 is a high-speed steel (HSS) chucking reamer designed to finish-ream drilled or bored holes to precise tolerances. With a diameter of 0.0775 inches, an overall length of 3 inches, and a 0.75-inch straight flute length, this reamer is built for small-bore finishing work in metalworking and machining environments. The bright, uncoated finish suits general-purpose applications across a range of workpiece materials. It features a straight-cylindrical shank for secure chuck mounting and a right-hand cutting direction. Machinists and tool-and-die professionals are the primary users of this type of reamer.

This chucking reamer is suited for light-material removal passes where hole diameter accuracy and surface finish are critical. The 4-flute, straight-flute geometry provides smooth cutting action in through-hole and blind-hole applications on drill presses, lathes, and milling machines. It is appropriate for production and repair work where small-diameter precision holes are required in steel, aluminum, brass, and similar materials.

Key Features

• 0.0775-inch reamer diameter for small-bore precision finishing
• 4-flute straight-flute geometry for smooth, consistent material removal
• HSS construction provides toughness across common workpiece materials
• Bright, uncoated finish — no coating buildup concerns on close-tolerance work
• Straight-cylindrical shank for standard chuck compatibility
• Right-hand cutting direction for conventional machine spindle operation

Compatibility

Designed as a standard chucking reamer for use in drill presses, lathes, and milling machines equipped with a chuck capable of accepting a straight-cylindrical shank in the 0.0775-inch diameter class.

Installation Notes

This reamer is installed and operated by machinists or tool-and-die professionals in a machine tool setup. Power down and lock out the machine spindle before mounting or removing the reamer from the chuck. Ensure the shank is fully seated and the chuck is tightened securely before operation. Use appropriate cutting fluid for the workpiece material and never use a chucking reamer to remove more stock than the reamer geometry is rated to handle — pre-drill or bore to near-final size before reaming.