Hertel MR34-0634.406 Chucking Reamer 0.0635 in Carbide

Product Description

The HERTEL MR34-0634.406 is a solid carbide chucking reamer designed for precision hole finishing in metalworking and machining applications. With a reamer diameter of 0.0635 inches (Wire Size 52) and a diameter tolerance of 0.0000 to +0.0003 inches, this tool delivers consistent, tight-tolerance bore sizing. The 4-flute, left-hand spiral geometry with right-hand cutting direction provides smooth chip evacuation and stable cutting action. An overall length of 1.9685 inches and a straight shank make it compatible with standard chucks and collets used on drill presses, lathes, and CNC machining centers. The bright polished finish reduces friction and extends tool life in production environments.

This chucking reamer is suited for finishing small-diameter holes in ferrous and non-ferrous metals where dimensional accuracy is critical. With a flute length of 0.7087 inches, it is optimized for shallow through-holes and blind holes common in precision component manufacturing, tooling, and fixture work. It is typically installed and operated by machinists and CNC operators in job shops, production facilities, and toolrooms.

Key Features

• Solid carbide construction for hardness and wear resistance in demanding materials
• 4-flute left-hand spiral geometry promotes smooth chip flow and chatter reduction
• Right-hand cutting direction compatible with standard spindle rotation
• Diameter tolerance of 0.0000 to +0.0003 inches for precise bore sizing
• Bright polished finish reduces friction and aids chip release
• Straight shank fits standard chucks and collets without adapters

Compatibility

Designed as an OEM-style precision chucking reamer for use in standard drill chucks, ER collets, and straight-shank toolholders on CNC machining centers, lathes, and drill presses requiring a 0.0635-inch finished bore diameter.

Installation Notes

Chucking reamers should be installed by qualified machinists following shop safety procedures. Power down and lock out the spindle before mounting or removing the tool. Ensure the shank is fully seated and the chuck or collet is properly torqued before operation. Use appropriate cutting fluid for the workpiece material to maintain tolerance and extend tool life.