Accupro B140750R Corner Radius Boring Bar Submicron Carbide

Product Description

The ACCUPRO B140750R is a corner radius boring bar designed for precision internal machining operations. Built from submicron-grade solid carbide with a bright finish, it delivers tight tolerances and extended tool life in demanding bore finishing applications. The bar handles a minimum bore diameter of 0.14 inches and supports a maximum bore depth of 0.75 inches. With a 3/16-inch shank diameter and an overall length of 2 inches, this right-hand-cut tool fits compact boring setups on CNC lathes, machining centers, and manual turning equipment. Machinists and toolroom operators use it where a controlled corner radius is required at the base of a bore.

This boring bar is suited for small-bore finish work in production and toolroom environments. The corner radius range of 0.005 to 0.008 inches allows it to blend bore floors with a consistent, repeatable radius rather than leaving a sharp corner. Applications include precision bores in ferrous and non-ferrous workpieces where corner geometry is a functional requirement. It is sold individually and is appropriate for shops running tight-tolerance internal features on CNC or manual equipment.

Key Features

• Submicron solid carbide construction for wear resistance and dimensional stability
• Right-hand cutting direction for standard boring operations
• Corner radius range of 0.005 to 0.008 inches for controlled floor-to-wall transitions
• Bright finish coating — no additional coating that could affect critical bore dimensions
• Compact 2-inch overall length suits short-reach boring setups
• 3/16-inch shank diameter fits standard small-bore toolholders

Compatibility

Designed as a direct-fit replacement or toolroom addition for setups requiring a 3/16-inch shank corner radius boring bar with a minimum bore entry of 0.14 inches and a maximum bore depth of 0.75 inches.

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. Always bring the spindle to a complete stop before indexing or adjusting the tool. Follow shop-standard feeds and speeds for carbide tooling in the workpiece material being bored.