Hertel 85684975 Chucking Reamer 0.0345 in Hss Straight

Product Description

The HERTEL 85684975 is a straight-flute chucking reamer designed for precision hole finishing in metal and similar materials. Built from high-speed steel (HSS) with a bright, uncoated finish, this reamer delivers accurate sizing on final-pass operations where tight tolerances are required. The 0.0345-inch cutting diameter places it in the small-bore range, making it well suited for fine-diameter hole finishing in production and toolroom environments. With an overall length of 1-3/8 inches and a flute length of 1/2 inch, the tool is compact and suited to shallow-hole applications. Right-hand cutting direction is standard. This tool is typically installed and operated by machinists, toolmakers, and production technicians.

This chucking reamer is appropriate for use in drill presses, CNC machining centers, lathes, and manual milling setups where the spindle provides support through a chuck or collet. The straight-cylindrical shank allows straightforward mounting in standard drill chucks and collet holders. Its small-diameter profile makes it a practical choice for instrument components, valve bodies, precision fixtures, and other workpieces requiring clean, accurately sized small bores. The bright finish means no additional coating considerations are needed for standard ferrous and non-ferrous applications.

Key Features

• 0.0345-inch cutting diameter for small-bore precision hole finishing
• High-speed steel (HSS) construction for durability across common workpiece materials
• Straight flute geometry suited to through-holes and standard finish operations
• Bright, uncoated finish — no coating interaction with cutting fluids or workpiece materials
• Straight-cylindrical shank for direct chuck or collet mounting
• Right-hand cutting direction, compatible with standard spindle rotation

Compatibility

Designed as an OEM-style chucking reamer for use in drill chucks and collet holders that accept a straight-cylindrical shank at this diameter range.

Installation Notes

Installation and operation should be performed by a qualified machinist or toolroom technician. Secure the shank firmly in a properly sized chuck or collet before operation, and confirm runout is within acceptable limits for the tolerance class being held. Always power down and lock out the spindle before changing or inspecting the reamer. Apply appropriate cutting fluid for the workpiece material to extend tool life and maintain surface finish quality.