Accupro B2301250R Corner Radius Boring Bar Solid Carbide

Product Description

The ACCUPRO B2301250R is a corner radius boring bar designed for precision internal machining in metal cutting applications. Built from submicron solid carbide with a bright finish coating, this bar delivers tight tolerances and consistent performance in demanding shop environments. It cuts right hand, features a minimum bore diameter of 0.23 inches, and reaches a maximum bore depth of 1.25 inches. The 5/16-inch shank diameter and 2.5-inch overall length make it well suited for small-bore work where rigidity and tool control are critical. Machinists and toolroom professionals install this type of boring bar on CNC lathes, manual lathes, and boring mills.

This boring bar is used in precision turning and boring operations where corner radius geometry is required at the base of a bored feature. It is suited for both production and prototype machining in job shops, tool rooms, and manufacturing facilities. The corner radius range of 0.005 to 0.008 inches provides a controlled blend at the bore floor, reducing stress concentration and meeting close-tolerance drawing callouts. Applications include finishing passes on steel, aluminum, and other machinable alloys in small-diameter bores.

Key Features

• Submicron solid carbide construction for high wear resistance and edge retention
• Minimum bore diameter of 0.23 inches enables work in tight, small-bore features
• Maximum bore depth of 1.25 inches suitable for through and blind bore finishing
• Corner radius range of 0.005 to 0.008 inches for precise radius blending at bore floor
• Bright finish coating reduces friction and aids chip evacuation
• Right hand cutting direction for standard lathe and boring mill setups

Compatibility

Designed as an OEM-style replacement and standard tooling option for right-hand boring bar holders accepting a 5/16-inch shank diameter on CNC and manual lathes or boring mills.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Secure the shank firmly in a compatible boring bar holder and verify runout before cutting. Power down and lock out the machine spindle before setting or adjusting the tool. Do not exceed the recommended overhang ratio for the shank diameter, as excessive overhang on solid carbide bars increases the risk of chipping or breakage.