Hertel MR34-0571.406 Chucking Reamer 0.0571 in Solid Carbide

Product Description

The HERTEL MR34-0571.406 is a solid carbide chucking reamer designed for precision hole finishing in tight-tolerance machining applications. With a reamer diameter of 0.0571 inches (1.45 mm) and a diameter tolerance of 0.0000 to +0.0003 mm, this tool holds dimensional accuracy critical for close-fit bores. The four-flute, left-hand spiral geometry with right-hand cutting direction promotes smooth chip evacuation and reduces chatter during the cut. The bright polished finish minimizes friction and helps maintain surface finish quality in the finished bore. Machinists and toolroom technicians working with CNC or manual lathes and mills are the primary installers of this tool.

This reamer is suited for through-hole and blind-hole finishing operations where precise bore sizing is required. At 0.0571 inches in diameter, it targets micro and small-bore work common in precision instrument components, medical device parts, aerospace components, and hydraulic valve bodies. The straight shank allows direct mounting in standard drill chucks, collet chucks, and reamer holders. Overall length is 1.9685 inches with a flute length of 0.7087 inches, keeping the tool compact for close-clearance setups on machining centers and manual mills.

Key Features

• Solid carbide construction provides superior wear resistance and rigidity compared to HSS in abrasive or hard materials
• Four-flute left-hand spiral geometry with right-hand cutting direction for controlled chip flow
• Diameter tolerance of 0.0000 to +0.0003 mm supports tight-fit bore requirements
• Bright polished coating reduces built-up edge and promotes clean surface finish
• Straight shank for direct compatibility with standard chucks and collet holders
• Compact 1.9685-inch overall length suits confined machining setups

Compatibility

Designed as an OEM-style solid carbide chucking reamer for use in standard straight-shank drill chucks, collet chucks, and reamer holders on CNC machining centers, CNC lathes, and manual milling or drilling machines accepting the 0.0571-inch diameter shank size.

Installation Notes

Installation and use of this reamer should be performed by qualified machinists familiar with precision hole-finishing operations. Ensure the spindle is fully stopped and the machine is powered down before mounting or removing the tool from the holder. Verify chuck or collet runout before use, as excessive runout will negatively affect bore tolerance and tool life. Apply appropriate cutting fluid for the workpiece material to extend tool life and maintain surface finish quality.