Hertel MR34-0118.079 Chucking Reamer 0.0118 in Carbide

Product Description

The HERTEL MR34-0118.079 is a solid carbide chucking reamer designed for precision hole finishing in tight-tolerance applications. With a reamer diameter of 0.0118 inches (0.30 mm) and an overall length of 1.9685 inches (50.00 mm), this tool is built for micro-bore work where dimensional accuracy is critical. The four-flute, left-hand spiral geometry with right-hand cutting direction promotes smooth chip evacuation and reduces chatter in small-diameter bores. A bright polished finish minimizes friction and helps maintain bore surface quality. Machinists and tool-room professionals rely on tools like this for reaming precision holes in hardened or difficult-to-machine materials.

This chucking reamer is suited for use in CNC machining centers, drill presses, and manual lathes where precise bore sizing is required. The straight shank allows direct mounting in standard collet chucks or drill chucks. With a flute length of 2.00 mm (approximately 0.079 inches), this tool targets very shallow bore finishing operations. It is appropriate for production environments and tool-room setups working with micro-diameter holes in metals, composites, or plastics.

Key Features

• Solid carbide construction for rigidity and wear resistance in micro-bore applications
• Four left-hand spiral flutes with right-hand cutting direction for smooth chip flow
• Reamer diameter tolerance of 0.0000 to +0.0003 mm for tight bore control
• Bright polished coating reduces friction and aids surface finish quality
• Straight shank for direct mounting in collet or drill chucks
• Compact 1.9685-inch overall length suited for confined machining setups

Compatibility

Designed as an OEM-style chucking reamer for use in standard straight-shank collet systems and drill chuck setups requiring a 0.0118-inch diameter bore finish tool.

Installation Notes

Installation and use should be performed by qualified machinists familiar with precision reaming operations. Ensure the machine spindle and chuck are free of runout before mounting to preserve diameter tolerance. Always bring the workpiece to correct pre-reamed size before using this tool, as chucking reamers remove only a small amount of material. Follow applicable shop safety practices and machine manufacturer guidelines when operating at high spindle speeds with micro-diameter tooling.