Cleveland C26680 Chucking Reamer Straight 25/32 in pneumatic accessory

Cleveland C26680 Chucking Reamer

The Cleveland C26680 is a straight-flute chucking reamer made from high-speed steel with a bright, uncoated finish. It is sized at 25/32 in, which measures .781 in decimal form. This pneumatic accessory is designed for precision hole finishing in machine-shop and maintenance environments. Machinists and tool-crib managers select it when a fractional-inch reamer is required for through-holes or blind-holes.

Sustained cutting behaviour

High-speed steel construction allows the flutes to retain hardness during extended cutting cycles without the rapid edge degradation seen in uncoated carbon tooling. The straight-flute geometry evacuates chips efficiently in a continuous pass, reducing heat build-up when the reamer is fed at a constant rate. Operators can maintain consistent diameter tolerance across multiple parts in a single setup. The bright finish provides no additional lubricity, so adequate coolant or cutting oil is necessary for prolonged use.

Practical limits of the straight-flute interface

The straight-flute design performs best in through-holes where chips can exit ahead of the tool; blind-holes may require frequent withdrawal to clear swarf. Without a coating, the cutting edges are more susceptible to built-up edge in gummy materials such as low-carbon steel or aluminium. The fractional 25/32 in size limits application to holes nominally matching that diameter; it cannot be used for metric or oversize bores. Rigidity of the machine spindle and work-holding directly governs the achievable surface finish and roundness.