Accupro B050300R Corner Radius Boring Bar Solid Carbide

Product Description

The ACCUPRO B050300R is a corner radius boring bar designed for precision internal machining operations where tight tolerances and fine surface finish are required. Machined from submicron-grade solid carbide, this boring bar delivers rigidity and wear resistance in demanding cutting conditions. It features a right-hand cutting direction, a minimum bore diameter of 0.05 inches, and a maximum bore depth of 0.3 inches. The bright finish coating reduces friction and helps maintain dimensional accuracy. With a 1/8-inch shank diameter and a 1-1/2-inch overall length, this bar is suited for small-bore applications where reach and concentricity matter. It is installed by machinists working on CNC lathes, boring mills, and manual turning centers.

The B050300R is used in small-bore finishing and semi-finishing operations across industries including aerospace, medical device manufacturing, and precision tooling. The corner radius range of 0.003 to 0.005 inches allows the technician to match part geometry requirements while minimizing stress concentration at the bore corner. This bar is a strong fit for tight-clearance bores where a standard boring bar cannot reach or maintain the required surface quality.

Key Features

• Submicron solid carbide construction for high rigidity and extended tool life
• Right-hand cutting direction for standard lathe and boring mill setups
• Minimum bore diameter of 0.05 inches enables machining of very small internal features
• Corner radius range of 0.003 to 0.005 inches for controlled blending at bore corners
• Bright finish coating reduces built-up edge and aids chip flow
• Compact 1/8-inch shank diameter fits small-bore toolholders and collet chucks

Compatibility

Designed for use in toolholders and collet chucks accepting a 1/8-inch shank diameter, suitable for CNC and manual lathes and boring mills configured for small-bore internal turning operations.

Installation Notes

Installation is performed by a machinist or toolroom technician. Secure the shank fully in the toolholder and verify runout before cutting. Ensure the machine spindle is fully stopped and all motion has ceased before inserting or removing the boring bar. Follow shop safety protocols and machine-specific operating procedures when setting cutting parameters.