Accupro B4904500R Corner Radius Boring Bar Solid Carbide

Product Description

The ACCUPRO B4904500R is a corner radius boring bar engineered for precision internal turning and boring operations on CNC lathes and machining centers. Manufactured from submicron solid carbide, this right-hand-cut bar delivers consistent rigidity and wear resistance across demanding production cycles. It accepts a minimum bore diameter of 0.49 inches and reaches a maximum bore depth of 4.5 inches, making it well suited for deep-bore finish work. The bright finish coating reduces built-up edge and aids chip evacuation. A 0.5-inch shank diameter and 6-inch overall length (OAL) provide a stable, repeatable setup in standard boring bar holders.

This boring bar is used in precision machining environments where a controlled corner radius is required at the base of a bored feature. Typical applications include finishing operations on steel, stainless, cast iron, and non-ferrous alloys where tight bore tolerances and smooth surface finishes are critical. The corner radius range of 0.005 to 0.008 inches allows machinists to blend transitions cleanly while reducing stress concentrations in the finished part. It is installed and operated by CNC machinists and tool-and-die professionals in job shops and production manufacturing settings.

Key Features

• Submicron solid carbide construction for high rigidity and extended tool life
• Right-hand cutting direction for standard CNC lathe boring operations
• Corner radius range of 0.005 to 0.008 inches for controlled blend transitions
• Minimum bore diameter of 0.49 inches with maximum bore depth of 4.5 inches
• Bright finish coating reduces built-up edge and improves chip flow
• 0.5-inch shank diameter fits standard boring bar toolholders

Compatibility

Designed for use in standard 0.5-inch boring bar toolholders on CNC lathes and machining centers requiring a right-hand, corner radius internal turning tool.

Installation Notes

This boring bar is installed and set up by qualified CNC machinists. Ensure the machine spindle is fully stopped and all axes are at a safe home position before changing tooling. Secure the shank firmly in a matched-diameter boring bar holder to the toolholder manufacturer's specified clamping procedure to prevent chatter or pullout. Verify corner radius and bore diameter offsets in the control before running the first part.