Cleveland C25949 Chucking Reamer 0.4385 in Hss Straight Flute

Product Description

The CLEVELAND C25949 is a straight-flute chucking reamer machined from high-speed steel (HSS) and designed to finish-ream drilled or bored holes to a precise 0.4385-inch diameter. With a 7-inch overall length and a 1-3/4-inch flute length, this reamer suits general-purpose hole-finishing operations on a wide range of workpiece materials. The straight cylindrical shank allows secure seating in standard drill chucks or collets. The bright, uncoated finish is appropriate for use with cutting fluids and is common for HSS tooling used in job-shop and production machining environments. Machinists and tool-and-die technicians typically select this reamer when close-tolerance fits are required after drilling.

This reamer is well-suited for use in manual lathes, drill presses, and CNC machining centers where a straight-shank, machine-driven reamer is preferred. The 6-flute, right-hand-cut configuration provides smooth material removal and good surface finish on through-holes and blind applications. It is appropriate for ferrous and non-ferrous metals in both prototype and production settings. The listed size designation of 0.4385 O/S indicates an over-size grind relative to nominal, which is a standard consideration when selecting for press-fit or interference-fit applications.

Key Features

• 0.4385-inch finished-hole diameter with over-size designation for close-tolerance work
• High-speed steel construction for durability across a broad range of materials
• 6-flute, right-hand-cut geometry for smooth, consistent surface finish
• Straight flute design well-suited for through-hole reaming operations
• Straight cylindrical shank fits standard drill chucks and collets without adapters
• Bright, uncoated finish compatible with a wide variety of cutting fluids

Compatibility

Designed as a machine-driven chucking reamer for use in drill presses, lathes, or CNC machining centers equipped with a standard straight-shank chuck or collet holder sized for this shank diameter.

Installation Notes

Chucking reamers must be installed by qualified machinists following proper lockout/tagout procedures before mounting or removing tooling from any machine spindle. Ensure the shank is fully seated and the chuck or collet is tightened to the machine manufacturer's specification before operation. Always use an appropriate cutting fluid for the workpiece material to extend tool life and achieve the target surface finish. Do not use a chucking reamer as a hand reamer or apply side loading, as this can cause premature tool wear or breakage.