Accupro B4904500A Boring Bar 0.49in Min Bore Solid Carbide

Product Description

The ACCUPRO B4904500A is a solid carbide boring bar designed for precision internal boring operations on CNC and manual lathes. Built from submicron-grade carbide and coated with AlTiN (aluminum titanium nitride), it delivers extended tool life and heat resistance in demanding cutting conditions. The bar features a 0.5 inch shank diameter and an overall length of 6 inches, supporting a maximum bore depth of 4.5 inches. The right-hand cutting direction suits standard spindle configurations. Machinists and toolroom technicians use this bar when tight bore tolerances and finish quality are required in steel, stainless, and hardened materials.

This boring bar is suited for production and job-shop environments where consistent bore diameter and surface finish are priorities. With a minimum bore diameter of 0.49 inches, it handles relatively tight through-bores and blind-bore applications. The submicron carbide substrate resists chipping and wear at higher cutting speeds, making it a practical choice for both roughing and finishing passes where tool change frequency needs to be minimized. It ships as a single unit and is ready to mount directly into a compatible boring bar holder.

Key Features

• Submicron solid carbide substrate for high wear resistance and edge integrity
• AlTiN finish coating improves heat resistance and extends tool life in ferrous materials
• Right-hand cutting direction for standard lathe and boring mill setups
• 0.49 inch minimum bore diameter enables work in small-diameter bores
• 4.5 inch maximum bore depth supports deep internal features without tool change
• 0.5 inch shank diameter fits widely available boring bar holders and quick-change tooling systems

Compatibility

Designed for use with boring bar holders and tooling blocks that accept a 0.5 inch round shank. Confirm holder bore diameter and clamping style before installation.

Installation Notes

Installation is performed by qualified machinists following standard toolroom practices. Power down and lock out the machine spindle before securing or removing the boring bar from its holder. Ensure the shank is fully seated and the clamping screws are torqued per the holder manufacturer specifications. Confirm tool overhang does not exceed recommended depth-to-diameter ratios to avoid chatter and deflection during the cut.