Cleveland C25809 Chucking Reamer 0.376 in Hss Straight Flute

Product Description

The CLEVELAND C25809 is a straight-flute chucking reamer designed to finish-ream drilled holes to a precise 0.376-inch diameter. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers accurate sizing in a wide range of ferrous and non-ferrous materials. The straight cylindrical shank seats securely in a drill chuck or collet, and the right-hand cutting direction suits standard machine rotation. At 7 inches overall length with a 1-3/4-inch flute length and six flutes, this reamer is well suited for controlled material removal and smooth bore finish in production and maintenance machining.

This reamer is used in machine shop, maintenance, and tool-room applications where a drilled or bored hole must be brought to a final diameter with close tolerances and a smooth finish. Typical setups include drill presses, lathes, and CNC machining centers. It is appropriate for through-holes and blind holes where straight-flute geometry provides adequate chip clearance. Machinists and tool-room technicians working with ferrous metals, aluminum, brass, and plastics will find it suitable for general-purpose finish reaming at 0.376 inches.

Key Features

• 0.376-inch reamer diameter for precise final-size finishing of drilled holes
• High-speed steel construction provides wear resistance across a broad range of workpiece materials
• Straight flute geometry suits through-hole reaming and provides good chip evacuation
• Six-flute design delivers a smooth bore finish and distributes cutting load evenly
• Straight cylindrical shank for secure clamping in standard drill chucks and collets
• Right-hand cut for use with standard machine rotation without special fixturing

Compatibility

Designed as a general-purpose chucking reamer for use in drill presses, lathes, and machining centers accepting a straight cylindrical shank in the 0.376-inch diameter class.

Installation Notes

A licensed machinist or qualified tool-room technician should secure the shank fully in a rigid chuck or collet before operation. Always power down and lock out the machine spindle before installing or removing the reamer. Use appropriate cutting fluid or coolant for the workpiece material to extend tool life and improve surface finish. Do not use this reamer to enlarge holes beyond its rated diameter or to correct out-of-round conditions.