Accupro ACC-BB320500A Boring Bar 0.32in Min Bore Carbide

Product Description

The ACCUPRO ACC-BB320500A is a micrograin solid carbide boring bar designed for precision internal turning and boring operations on CNC lathes and manual turning centers. It features a right-hand cutting direction, a minimum bore diameter of 0.32 inches, and a maximum bore depth of 0.50 inches. The bar carries a TiAlN finish coating, which extends tool life by reducing heat and wear at the cutting edge. With a 3/8-inch shank diameter and an overall length of 2.50 inches, this bar is sized for small-bore, close-tolerance work where rigidity and precision matter. Machinists and toolroom operators use this style of bar for finishing passes requiring tight dimensional control.

This boring bar suits small-bore internal diameter finishing and semi-finishing applications in metalworking environments. It is appropriate for use on ferrous and non-ferrous materials where a high-rigidity, solid carbide tool body is preferred over brazed or indexable tooling. Typical install scenarios include production turning shops, tool and die operations, and job shops running tight-tolerance bore work on lathes or machining centers equipped for small-shank tooling. The compact overall length and 3/8-inch shank make it compatible with standard boring bar holders sized for that shank diameter.

Key Features

• Micrograin solid carbide construction provides high rigidity and resistance to deflection in small-bore applications
• TiAlN finish coating reduces cutting-edge wear and improves heat resistance at the tool tip
• Right-hand cutting direction for standard lathe setups
• 0.32-inch minimum bore diameter enables access to small internal diameters
• 0.50-inch maximum bore depth suited for shallow through and blind bore work
• 3/8-inch shank diameter fits standard small-bore toolholders and boring bar sleeves

Compatibility

Designed as an OEM-style solid carbide boring bar for use with standard boring bar holders and sleeves accepting a 3/8-inch round shank diameter.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before inserting or removing the boring bar from its holder. Secure the shank fully within the holder to the manufacturer-specified engagement depth to minimize overhang and prevent deflection or chatter. Do not exceed the stated maximum bore depth of 0.50 inches, as doing so risks tool breakage due to the small carbide cross-section.