Accupro ACC-BB4903000 Boring Bar Submicron Solid Carbide

Product Description

The ACCUPRO ACC-BB4903000 is a solid carbide boring bar designed for precision internal turning and boring operations on CNC lathes and manual turning centers. Built from submicron-grade solid carbide with a bright finish, it delivers tight dimensional control and consistent surface finish across its full 3-inch maximum bore depth. The 0.49-inch minimum bore diameter and 0.5-inch shank diameter make it well suited for small-to-medium bore applications where rigidity and runout control are critical. Machinists and toolroom technicians working in high-precision environments rely on this grade of carbide for its resistance to wear and edge chipping under continuous cutting loads.

This boring bar is used in job shop, production, and maintenance-repair machining environments where right-hand internal boring is required. It is appropriate for ferrous and non-ferrous workpieces where fine bore tolerances are held. The 6-inch overall length provides adequate reach for typical lathe toolpost setups while keeping deflection minimal. A 0.5-inch shank diameter fits standard boring bar holders and quick-change toolpost systems common across most turning center configurations.

Key Features

• Submicron solid carbide construction for wear resistance and long edge life
• 0.49-inch minimum bore diameter for small-bore internal turning
• 3-inch maximum bore depth with 6-inch overall length for extended reach
• Right-hand cutting direction for standard lathe rotation
• Bright finish coating for reduced friction and chip adhesion
• 0.5-inch shank diameter fits common boring bar holders and quick-change systems

Compatibility

Designed as an OEM-style replacement and standard-production boring bar for use in 0.5-inch boring bar holders on CNC and manual turning centers requiring right-hand internal boring capability.

Installation Notes

Installation and tool changes must be performed with the machine powered down and in a locked-out state per applicable shop safety procedures. Secure the shank fully in the boring bar holder to the depth recommended by the holder manufacturer to minimize overhang and deflection. Verify tool height alignment to centerline before taking a cut. Inspect the cutting edge for chips or wear before each use, as submicron carbide is brittle and can fracture if used with excessive runout or interrupted cuts without proper setup.