Hertel MR34-0327.281 Chucking Reamer 0.0327in Solid Carbide

Product Description

The HERTEL MR34-0327.281 is a solid carbide chucking reamer designed for precision hole finishing in tight-tolerance machining applications. With a reamer diameter of 0.0327 inches (0.83 mm) and a diameter tolerance of 0.0000 to +0.0003 mm, this tool delivers consistent bore sizing in small-diameter work. The straight shank allows direct mounting in standard drill chucks or collets. Four spiral flutes with a left-hand spiral and right-hand cutting direction promote smooth chip evacuation and reduce chatter during operation. A bright polished finish minimizes friction and helps maintain dimensional accuracy across production runs.

This reamer is suited for precision hole sizing in small-bore applications across metalworking, toolroom, and production machining environments. The 0.0327-inch diameter targets applications requiring sub-1 mm bore accuracy, typical in medical device, aerospace, and instrument manufacturing. Overall length of 1.9685 inches and a flute length of 0.7087 inches (18 mm nominal) make it appropriate for shallow to moderate-depth reaming operations. Machinists and tool-and-die professionals working with CNC machining centers, drill presses, or manual lathes are the primary users of this tool.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard or abrasive materials
• 0.0327-inch (0.83 mm) diameter with tolerance of 0.0000 to +0.0003 mm for tight bore control
• Left-hand spiral flutes with right-hand cutting direction for smooth chip flow and reduced tool deflection
• Bright polished finish to minimize built-up edge and extend tool life
• Straight shank for direct chuck or collet mounting without adapters
• 4-flute geometry balances surface finish quality with chip clearance

Compatibility

Designed as an OEM-style solid carbide chucking reamer for use in standard drill chucks, collet holders, and reamer holders accepting a straight shank in this diameter range.

Installation Notes

Installation should be performed by a qualified machinist following standard toolroom practices. Ensure the workpiece and machine spindle are fully stopped and secured before changing or inspecting the reamer. Use appropriate collet or chuck tooling that matches the straight shank diameter to prevent runout. Follow shop-floor speeds and feeds guidelines for solid carbide reamers in the specific workpiece material being machined.