Cleveland C25253 Chucking Reamer No. 28 Hss 4 Inch Oal

Product Description

The CLEVELAND C25253 is a straight-flute chucking reamer designed to bring drilled or bored holes to a precise finished diameter. Ground from high-speed steel and left in a bright, uncoated finish, this reamer is sized to wire gauge No. 28, which corresponds to a decimal diameter of 0.1405 inches. The 4-inch overall length and 1-inch flute length make it compact and well-suited for use in drill presses, lathes, and CNC machining centers. Six right-hand-cut flutes produce a smooth, accurate bore finish in a wide range of ferrous and non-ferrous materials. Machinists and tool-room technicians are the primary users of this type of reamer.

This reamer is used in production and maintenance machining environments where hole-size accuracy and surface finish are critical. The straight shank allows direct mounting in standard drill chucks, collet holders, or floating reamer holders without additional adapters. It is appropriate for through-hole and shallow blind-hole applications in metals where a No. 28 wire-gauge finish diameter is required. The bright finish works well in applications where coating buildup on the cutting edge would be undesirable or where the base HSS hardness is sufficient for the workpiece material.

Key Features

• No. 28 wire-gauge diameter: 0.1405 inches finished bore size
• High-speed steel construction for durability across common ferrous and non-ferrous workpieces
• Six straight flutes with right-hand cut for smooth, consistent material removal
• Bright, uncoated finish — no coating buildup at the cutting edge
• Straight shank fits standard drill chucks and collet holders without adapters
• 4-inch OAL with 1-inch flute length suited for shallow and through-hole applications

Compatibility

Designed as a standard chucking reamer for use in drill presses, lathes, turret machines, and CNC machining centers equipped with a straight-shank tool-holding system sized for this shank diameter.

Installation Notes

This reamer is installed and operated by machinists and tool-room technicians. Ensure the machine spindle and chuck are fully stopped and locked out before mounting or removing the reamer. Secure the straight shank firmly in the chuck or collet to prevent runout, which degrades bore finish and tool life. Use appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish; dry reaming of hard ferrous materials is not recommended.