Value Collection 246522 Machine Expansion Reamer 11/16 in

Product Description

The VALUE COLLECTION 246522 is a machine expansion reamer designed for precision hole finishing in metalworking and machining applications. This reamer measures 0.6875 inches (11/16 inch) in diameter with a 9-inch overall length and features six straight flutes with a 1.25-inch flute length. The carbide-tipped cutting edges deliver consistent performance in production and job-shop environments. A straight shank makes it compatible with standard drill chucks and collet holders. Right-hand cutting direction and a guaranteed minimum expansion of 0.0100 inches give machinists reliable, repeatable sizing on bored or drilled holes.

This machine expansion reamer is used in holemaking operations where a finished bore must meet tight dimensional tolerances. It is well suited for use on CNC machining centers, manual milling machines, and drill presses in production shops, maintenance environments, and tool rooms. The adjustable expansion feature allows the machinist to dial in the precise finished diameter without replacing the tool, making it a cost-effective choice for low-to-medium volume runs where hole size consistency is critical.

Key Features

• 0.6875-inch (11/16 inch) reamer diameter with a tolerance of +0.0003 to -0.0000 inches for tight bore control
• Guaranteed minimum expansion of 0.0100 inches for adjustable sizing without tool replacement
• Carbide-tipped cutting edges for extended tool life on ferrous and non-ferrous materials
• Six straight flutes with 1.25-inch flute length provide smooth, consistent chip evacuation
• Straight shank for direct mounting in drill chucks or collet-style toolholders
• Right-hand cutting direction compatible with standard machine spindle rotation

Compatibility

Designed as an OEM-style machine expansion reamer for use in standard drill chucks and collet holders on CNC machining centers, manual mills, and drill presses requiring an 11/16-inch nominal bore diameter.

Installation Notes

Machine expansion reamers are installed and adjusted by qualified machinists or tool-and-die professionals. Before mounting, ensure the machine spindle is fully stopped and locked out per facility lockout/tagout procedures. Secure the straight shank firmly in a properly sized chuck or collet to prevent runout. Adjust the expansion to the target diameter incrementally and verify with a calibrated bore gauge before cutting to finished size.