Hertel 2412070 Chucking Reamer 7/64 in Cobalt Steel 4 Flute

Product Description

The HERTEL 2412070 is a cobalt steel chucking reamer designed to finish-ream drilled holes to a precise 7/64 inch (0.1094 inch decimal) diameter. It features a 4-flute, right-hand spiral flute configuration with a bright, uncoated finish. The overall length is 3-1/2 inches with a 7/8 inch flute length and a straight-cylindrical shank for secure chuck mounting. Cobalt steel construction provides elevated hardness and heat resistance compared to standard high-speed steel, making this reamer well suited to tougher workpiece materials. Machinists, toolroom technicians, and maintenance mechanics are the typical users of this tool.

This reamer is used in drilling and machining operations where hole diameter accuracy and surface finish are critical. It is appropriate for light-to-medium production work on manual mills, drill presses, and CNC machining centers. The straight-cylindrical shank seats directly in standard drill chucks or collet holders. Applications include precision hole finishing in metal fabrication, maintenance repair, and toolroom environments where consistent diameter tolerance in the 0.1000 to 0.1499 inch range is required.

Key Features

• Cobalt steel construction for improved heat and wear resistance over standard HSS
• 4-flute right-hand spiral design for smooth cutting action and improved chip evacuation
• Bright, uncoated finish suitable for general-purpose reaming applications
• Straight-cylindrical shank compatible with standard drill chucks and collet systems
• 7/64 inch nominal diameter (0.1094 inch decimal) with no over or under size offset
• Compact 3-1/2 inch OAL suitable for close-tolerance work in confined setups

Compatibility

Designed as a standard chucking reamer for use in drill chucks and collet holders accepting a straight-cylindrical shank in the applicable size range.

Installation Notes

This tool is installed and operated by machinists and toolroom technicians using standard machine tool practices. Ensure the workpiece is firmly secured and the reamer is properly seated and centered in the chuck or collet before operation. Always reduce spindle speed relative to the drilling operation and apply appropriate cutting fluid for the workpiece material. Inspect the cutting edges for wear or chipping before each use and replace if edge condition is compromised.