Cleveland C29853 Chucking Reamer 5/16 in Spiral Flute Hss

Product Description

The CLEVELAND C29853 is a straight-shank chucking reamer designed for precision hole finishing in metal fabrication and machining applications. Built from high-speed steel with a bright, uncoated finish, this reamer measures 5/16 inch (0.3125 inch) in diameter with a 6-inch overall length and a 1-1/2-inch spiral flute length. The 6-flute, right-hand spiral configuration promotes smooth chip evacuation and improved surface finish in through-hole and blind-hole reaming operations. It is suited for use in CNC machining centers, drill presses, and manual lathes where tight bore tolerances are required.

This chucking reamer is intended for finishing pre-drilled holes to precise dimensional tolerances in ferrous and non-ferrous materials. The straight shank allows direct mounting in standard drill chucks or collet holders without special tooling adapters. Typical applications include production machining, tool and die work, and general metalworking where hole diameter consistency is critical. The right-hand cut and spiral flute geometry make it well suited for general-purpose shop use across a range of materials.

Key Features

• High-speed steel construction provides durability and wear resistance across ferrous and non-ferrous materials
• 6-flute spiral design promotes smooth cutting action and efficient chip removal
• Right-hand cut and right-hand spiral for standard machine spindle compatibility
• Bright uncoated finish suitable for use with cutting fluids in standard reaming operations
• Straight shank fits standard drill chucks and collet systems without adapters
• 1-1/2-inch flute length accommodates typical through-hole and shallow blind-hole applications

Compatibility

Designed as a standard straight-shank chucking reamer compatible with drill chucks and collet holders accepting a 5/16-inch straight shank, for use in CNC machining centers, drill presses, and lathes.

Installation Notes

Chucking reamers are installed by machinists in drill chucks or collet holders; ensure the shank is fully seated and the chuck is securely tightened before operation. Always pre-drill the hole to the appropriate undersize before reaming to avoid tool deflection or overloading. Use an appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Inspect the reamer for wear or chipping before each use and replace if cutting edges are damaged.