Hertel 72008501 Chucking Reamer 0.085 in Hss 4 Flute

Product Description

The HERTEL 72008501 is a straight-flute chucking reamer designed for precision hole finishing in metal and other rigid materials. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers a sharp cutting edge suitable for general-purpose reaming in machine shop and production environments. The reamer measures 0.0850 inches in diameter with a 3-inch overall length and a 3/4-inch flute length. Its straight-cylindrical shank seats directly in standard drill chucks, collets, or reamer holders. Right-hand cutting direction with 4 flutes provides clean, consistent bore finishes. Machinists, tool-and-die makers, and production technicians are the primary users of this tool.

This chucking reamer is suited for finishing drilled holes to close tolerance in ferrous and non-ferrous metals, plastics, and similar machinable materials. The 0.0850-inch diameter falls within the small-diameter range, making it appropriate for precision instrument work, jig and fixture fabrication, and light production reaming where tight bore tolerances are required. It is intended for use in drill presses, CNC machining centers, lathes, and manual milling machines when held in a rigid setup.

Key Features

• 0.0850-inch reamer diameter for small-hole precision finishing
• High-speed steel (HSS) construction for durability across a range of workpiece materials
• Bright, uncoated finish — no coating buildup that could affect dimensional accuracy
• 4 straight flutes with right-hand cutting direction for consistent chip evacuation
• Straight-cylindrical shank for direct chuck or collet mounting
• 3-inch overall length with 3/4-inch flute length for compact, rigid reach

Compatibility

Designed as a standard chucking reamer for use in drill chucks, collets, and reamer holders that accept a straight-cylindrical shank in the corresponding diameter range.

Installation Notes

Secure the shank fully in a rigid chuck or collet before operation — minimal runout is critical at this diameter. Always bring the spindle to a complete stop before measuring the finished bore or adjusting the workpiece. Use appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Follow applicable shop safety standards and machine guarding requirements during setup and operation.