Hertel 79889135 Chucking Reamer 0.085 in Solid Carbide

Product Description

The HERTEL 79889135 is a solid carbide chucking reamer designed for precision hole finishing in machine-shop and production environments. With a 0.085 inch diameter, a 4-flute straight configuration, and a diameter tolerance of 0.0000 to 0.0002 inches, this reamer delivers tight, repeatable hole sizing in small-bore applications. The bright, uncoated carbide construction holds a sharp edge on ferrous and non-ferrous materials alike. The straight cylindrical shank seats securely in standard drill chucks or collet holders, making it a practical choice for CNC machining centers, manual mills, and drill presses where micro-bore accuracy is required.

This reamer is suited for small-diameter finish reaming in precision machining, toolroom work, and production drilling operations. Its compact overall length of 2 inches and 0.5 inch flute length make it effective in shallow-hole applications where rigidity and runout control are critical. Machinists and toolroom technicians working with tight-tolerance bores in the 0.0500 to 0.0999 inch diameter range will find this tool appropriate for the work. It is sold and shipped individually.

Key Features

• Solid carbide construction for rigidity and wear resistance in precision boring
• 4-flute straight configuration for smooth cutting action on through and blind holes
• Diameter tolerance of 0.0000 to 0.0002 inches for tight, repeatable hole sizing
• Bright, uncoated finish — no coating buildup affecting dimensional accuracy
• Straight cylindrical shank for direct chuck or collet mounting
• Right-hand cut for standard spindle rotation

Compatibility

Designed as an OEM-style chucking reamer for use in standard drill chucks and collet holders accommodating a straight cylindrical shank in the 0.0500 to 0.0999 inch reamer diameter range.

Installation Notes

Installation is performed by machinists or toolroom technicians in a machine shop environment. Secure the straight shank in a precision collet or drill chuck to minimize runout before engaging the workpiece. Power down or lock out the machine spindle before mounting or removing the tool. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore finish quality.