Cleveland C25254 Chucking Reamer 9/64 in Hss Straight Flute

Product Description

The CLEVELAND C25254 is a straight-flute chucking reamer designed for precision hole finishing in metalworking applications. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers consistent sizing and smooth surface finish on through-holes and blind holes alike. The reamer measures 0.1406 inches (9/64 inches) in diameter, with a 4-inch overall length and a 1-inch flute length. Six flutes provide excellent chip clearance and cutting stability. The straight shank is compatible with standard drill chucks and collet holders, making it straightforward to mount on drill presses, lathes, and CNC machining centers.

This chucking reamer is suited for machine reaming operations in job shops, tool rooms, and production environments. It handles ferrous and non-ferrous materials where a tight-tolerance hole finish is required after drilling. The right-hand cutting direction and straight flute geometry make it appropriate for through-hole and short blind-hole applications across a range of materials. It is sold individually and is a practical addition to any machinist or tool crib inventory requiring small-diameter finish reaming capability.

Key Features

• High-speed steel construction for durability across general-purpose machine reaming
• Bright uncoated finish suitable for use with standard cutting fluids
• 6-flute straight design for smooth cutting action and consistent hole sizing
• Right-hand cut direction compatible with standard machine spindle rotation
• Straight shank for secure mounting in drill chucks and collet holders
• Compact 4-inch overall length suits drill press, lathe, and CNC setups

Compatibility

Designed as a standard chucking reamer for use in machine tool setups requiring a 9/64-inch (0.1406-inch) finished hole diameter. Straight shank fits standard drill chucks and collet systems sized for the shank diameter.

Installation Notes

Chucking reamers are installed by machinists and tool-room technicians using a drill chuck or collet holder on a drill press, lathe, or CNC machining center. Always ensure the workpiece is securely fixtured and the reamer is running true before engaging the cut. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Never use a chucking reamer to remove excessive stock — drill the hole to within 0.005 to 0.015 inches of final size before reaming.