Cleveland C25605 Chucking Reamer Letter L 0.290 in Hss

Product Description

The CLEVELAND C25605 is a straight-flute chucking reamer manufactured from high-speed steel (HSS) for finishing drilled holes to precise tolerances. Sized at letter L (0.2900 inch diameter), this reamer is designed for use in a drill press, lathe, or CNC setup where a chucking-style straight shank provides secure grip. The 6-flute geometry distributes cutting load evenly, reducing chatter and improving surface finish in the bored hole. With an overall length of 6 inches and a flute length of 1.5 inches, it handles standard reaming depths in ferrous and non-ferrous materials. The bright, uncoated finish is suited for use with cutting fluid in general-purpose machining applications.

This chucking reamer is used in machine shop, maintenance, and production environments where hole sizing to letter L tolerance is required. Typical applications include finish-reaming through-holes and blind holes in steel, cast iron, aluminum, and similar materials. It installs in any standard drill chuck or collet chuck that accepts a straight shank. The right-hand cutting direction is compatible with conventional clockwise spindle rotation on most machine tools.

Key Features

• Letter L diameter: 0.2900 inch for precision hole sizing
• 6 straight flutes for even load distribution and smooth finish
• High-speed steel construction for durability across ferrous and non-ferrous materials
• Bright, uncoated finish — compatible with a wide range of cutting fluids
• Straight shank fits standard drill chucks and collet holders
• Right-hand cut for use with standard clockwise spindle rotation

Compatibility

Designed as a general-purpose chucking reamer for use in drill presses, lathes, turret lathes, and CNC machining centers equipped with a drill chuck or collet that accepts a straight shank.

Installation Notes

Chucking reamers are installed by machinists and toolroom technicians. Always power down and lock out the machine spindle before changing tooling. Secure the straight shank firmly in the chuck or collet to prevent slippage during the cut. Run at reduced spindle speeds compared to drilling and apply cutting fluid continuously to extend tool life and improve hole finish.