Hertel MR34-0083.059 Chucking Reamer 0.0083 in Carbide

Product Description

The HERTEL MR34-0083.059 is a solid carbide chucking reamer designed for precision hole finishing in tight-tolerance applications. At 0.0083 inches (0.21 mm) in diameter and 1.9685 inches overall length, this micro-diameter reamer is built for work where dimensional accuracy is critical. It features a 4-flute spiral geometry with left-hand spiral flute direction and right-hand cutting direction, a bright polished finish, and a diameter tolerance of 0.0000 to +0.0003 mm. Machinists and tool-and-die professionals use it to achieve consistent bore finish and sizing in small-diameter holes that standard tooling cannot reach.

This reamer is suited for precision machining operations including micro-bore finishing in metals and engineered materials. The straight shank allows direct chucking in standard collets and drill chucks. Its 0.1181-inch (1.50 mm) flute length is optimized for shallow finishing passes in micro-scale bores. Applications include mold making, watchmaking, aerospace component machining, and medical device manufacturing where sub-millimeter bore tolerances are required.

Key Features

• Solid carbide construction for rigidity and wear resistance in micro-diameter applications
• 0.0083 inches (0.21 mm) diameter with tolerance of 0.0000 to +0.0003 mm for precision bore sizing
• 4-flute spiral geometry with left-hand spiral and right-hand cutting direction
• Bright polished finish reduces friction and aids chip evacuation in tight bores
• Straight shank for direct chucking in collets or standard drill chucks
• 1.9685 inches overall length with 0.1181-inch flute length for controlled finishing depth

Compatibility

Designed as an OEM-style solid carbide chucking reamer suitable for CNC machining centers, manual mills, and drill presses equipped with collet chucks or precision drill chucks accepting straight-shank micro tooling.

Installation Notes

Installation and use of this tool should be performed by qualified machinists familiar with micro-diameter tooling. Ensure the spindle and chuck are free of runout before seating the shank, as even minor runout will affect bore tolerance at this diameter. Use appropriate cutting fluid or coolant for the workpiece material to prevent tool breakage. Handle micro-diameter carbide reamers with care — carbide is brittle and will fracture if dropped or side-loaded.