Hertel 79890240 Chucking Reamer 7/32 in Solid Carbide

Product Description

The HERTEL 79890240 is a solid carbide chucking reamer designed for precision hole finishing in machining applications. With a reamer diameter of 7/32 inch (0.2188 decimal inch) and a tight tolerance of 0.0000 to 0.0002 inch, this tool delivers accurate, repeatable results in production and job-shop environments. The straight flute geometry and right-hand cutting direction suit it for use in CNC machining centers and manual drill presses alike. Machinists and toolroom technicians use this reamer where hole quality and dimensional accuracy are critical. The bright, uncoated solid carbide construction provides rigidity and wear resistance on a broad range of workpiece materials.

This chucking reamer is suited for finish-reaming operations in metalworking, manufacturing, and precision machining environments. Its straight cylindrical shank allows direct chuck mounting without additional toolholders. With a 3-inch overall length and a 1-inch flute length, it is well proportioned for shallow-to-moderate depth holes in production setups. It is not configured as a dowel pin reamer or an over/under size reamer, making it a standard-tolerance finishing tool for general machining use.

Key Features

• Solid carbide construction for rigidity and extended tool life
• Reamer diameter: 7/32 inch (0.2188 inch decimal), tolerance 0.0000 to 0.0002 inch
• 4-flute straight flute geometry for smooth, consistent finish
• Right-hand cutting direction for standard spindle rotation
• Straight cylindrical shank for direct chuck mounting
• Bright/uncoated finish — no coating buildup affecting tolerance

Compatibility

Designed as a standard-tolerance chucking reamer for use in CNC machining centers, knee mills, and drill presses where a straight cylindrical shank chuck mount is available.

Installation Notes

Installation and use should be performed by qualified machinists familiar with reaming operations and machine tool safety. Ensure the spindle is fully stopped and the machine is in a safe state before mounting or removing the tool. Secure the straight shank firmly in the chuck and verify runout before commencing the cut. Use appropriate cutting fluid for the workpiece material to protect tool life and maintain hole finish quality.