Carmex MPR4R0.2L15 Profile Boring Bar Solid Carbide

Product Description

The CARMEX MPR4R0.2L15 is a solid carbide profile boring bar designed for internal threading and profiling operations on small-diameter bores. With a minimum bore diameter of 0.16 inches and a maximum bore depth of 0.59 inches, this right-hand-cut tool is built for precision work in tight bore geometries. The bright finish coating reduces friction and aids chip flow during cutting. An overall length of 2 inches and a 4 mm shank diameter make it compatible with standard small-bore toolholding systems. Machinists and tool-and-die professionals use this bar where accurate internal profile geometry and surface finish are critical requirements.

This profile boring bar is suited for CNC lathe and turning center applications where small internal bores require consistent profile geometry. The 0.008-inch corner radius allows for controlled profile transitions in threading, grooving, and form-turning operations. It is appropriate for use in both job-shop and production environments handling small precision components in materials suited to solid carbide tooling.

Key Features

• Solid carbide construction for rigidity and wear resistance in small-bore applications
• Right-hand cutting direction for standard lathe setups
• Minimum bore diameter of 0.16 inches enables work in very small internal features
• Maximum bore depth of 0.59 inches provides adequate reach for typical small-bore profiles
• 0.008-inch corner radius for controlled profile and form transitions
• Bright finish coating reduces built-up edge and aids chip evacuation

Compatibility

Designed as an OEM-style profile boring bar for use with toolholding systems accepting a 4 mm shank diameter on CNC lathes and turning centers.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's toolholding specifications. Ensure the machine spindle is fully stopped and locked out before mounting or removing the boring bar. Confirm proper shank clamping torque per the toolholder manufacturer's guidelines and verify bore alignment before initiating a cut. Inspect the cutting edge for chipping or wear before each use.