Magafor 88860004090 Chucking Reamer 0.161 in Solid Carbide

Product Description

The MAGAFOR 88860004090 is a solid carbide chucking reamer designed for precision hole finishing in metalworking and machining applications. With a 0.161 inch diameter (Wire Size #20) and a 6-flute spiral configuration, it delivers a tight tolerance finish in the 0.0000 to +0.0004 mm range. The straight shank mounts directly in standard drill chucks or collets. Right-hand cutting with a left-hand spiral flute geometry helps pull chips away from the cutting edge during operation, reducing built-up edge and improving surface finish. Machinists and tool-and-die technicians working with close-tolerance bores specify this reamer when standard twist-drill finishes are insufficient.

This reamer is suited for small-diameter precision bore finishing on ferrous and non-ferrous workpieces in CNC machining centers, manual mills, and drill presses. At 2-61/64 inches overall length with a 3/4 inch flute length, it fits tight-clearance setups and short-reach spindle configurations. The bright (polished) finish reduces friction and works well in aluminum, brass, and mild steel. It is a single-piece solid carbide construction with no brazed tip, making it a reliable choice for production runs where consistent bore diameter is required.

Key Features

• 0.161 inch diameter with a tolerance of 0.0000 to +0.0004 mm for precision bore finishing
• Solid carbide construction for rigidity and wear resistance in production environments
• 6-flute spiral design with left-hand spiral and right-hand cutting direction for chip evacuation
• Bright (polished) coating reduces friction and suits non-ferrous and ferrous materials
• Straight shank compatible with standard drill chucks and collets
• Compact 2-61/64 inch overall length with 3/4 inch flute length for short-reach applications

Compatibility

Designed as an OEM-style replacement or direct-fit chucking reamer for straight-shank drill chucks and collet holders used in CNC machining centers, manual mills, and drill press setups requiring Wire Size #20 bore finishing.

Installation Notes

Installation is performed by qualified machinists familiar with rotating cutting tools and machine tool operation. Secure the straight shank fully in the chuck or collet to the manufacturer-specified grip depth before operation. Always bring the spindle to a complete stop and de-energize the machine before changing or adjusting the reamer. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore tolerance.