Hertel 2291276 Chucking Reamer Wire 27 Hss

Product Description

The HERTEL 2291276 is a wire-gauge chucking reamer designed to finish-ream holes to a precise 0.1440 inch diameter, corresponding to wire size number 27. Constructed from high-speed steel (HSS) with a bright, uncoated finish, it delivers accurate sizing in a wide range of metals and plastics. The straight-cylindrical shank mounts directly in a drill chuck, collet, or machine spindle. With a 4.0 inch overall length and a 1 inch straight flute, this reamer is suited for manual drill presses, lathes, and CNC operations where tight hole tolerances are required. Right-hand cutting direction is standard for conventional clockwise spindle rotation.

This reamer is intended for precision hole-finishing operations in machine shops, toolrooms, and production environments. It is appropriate for reaming through-holes and blind holes in steel, aluminum, brass, and similar workpiece materials where a close-tolerance bore is needed. The wire-size 27 designation places it in the 0.1000 to 0.1499 inch diameter range, making it a common choice for instrument, aerospace, and general mechanical assembly work requiring fine hole sizing.

Key Features

• Wire size 27 diameter: 0.1440 inch for precise hole finishing
• High-speed steel (HSS) construction for durability across a broad range of materials
• Bright, uncoated finish suitable for general-purpose reaming applications
• Straight flute geometry for clean, consistent stock removal
• Right-hand cutting direction for standard spindle rotation
• Straight-cylindrical shank for direct chuck or collet mounting

Compatibility

Designed as an OEM-style replacement and standard tooling option for any drill press, lathe turret, or CNC machine spindle accepting a straight-cylindrical shank reamer in the wire-size 27 diameter range.

Installation Notes

Chucking reamers are installed by machinists and toolroom technicians. Secure the shank firmly in a drill chuck or collet before operation and verify runout before cutting. Always power down the machine and bring the spindle to a complete stop before changing or adjusting tooling. Use appropriate cutting fluid for the workpiece material to extend tool life and achieve the best surface finish.