Accupro ACC-BB140750G Boring Bar Solid Carbide Tin

Product Description

The ACCUPRO ACC-BB140750G is a micrograin solid carbide boring bar designed for precision internal boring operations on CNC lathes, manual lathes, and boring machines. With a minimum bore diameter of 0.14 inches and a maximum bore depth of 0.75 inches, this bar handles tight, shallow bores where rigidity and edge retention are critical. The 3/16-inch shank diameter and 2-inch overall length make it well suited for small-bore applications in production and toolroom environments. A titanium nitride (TiN) finish coating improves surface hardness and reduces friction at the cutting edge, extending tool life in ferrous and non-ferrous materials. Right-hand cut geometry follows standard lathe rotation conventions.

This boring bar is intended for machinists and tool-and-die professionals working on precision components that require tight bore tolerances. Typical applications include finish boring of small holes in steel, cast iron, aluminum, and brass workpieces on engine lathes and turning centers. The micrograin carbide substrate provides the fine grain structure needed to hold a sharp edge and maintain dimensional accuracy across repeated passes in short-run and high-volume production alike.

Key Features

• Micrograin solid carbide construction for superior edge retention and rigidity
• TiN finish coating reduces cutting friction and extends tool life
• 0.14-inch minimum bore diameter suits small and tight bore geometries
• 0.75-inch maximum bore depth in a compact 2-inch overall length
• 3/16-inch shank diameter for standard small-bore tool holders
• Right-hand cut geometry compatible with standard lathe rotation

Compatibility

Designed as an OEM-style replacement or direct toolroom addition for standard tool holders accepting a 3/16-inch round shank boring bar.

Installation Notes

Installation is performed by machinists familiar with lathe tooling setup. Ensure the machine spindle is fully stopped and locked out before mounting or removing the boring bar. Secure the shank firmly in the tool holder with adequate clamping contact along the shank to minimize overhang-induced vibration. Follow shop safety procedures and applicable OSHA machining guidelines when setting tool offsets and running initial test passes.