Scientific Cutting Tools BB92A Radial Relief Boring Bar

Product Description

The SCIENTIFIC CUTTING TOOLS BB92A is a radial relief boring bar designed for precision internal turning operations on small-diameter bores. Built from submicron solid carbide with an AlTiN+ coating, it delivers the hardness and heat resistance needed for demanding machining environments. The right-hand cutting direction suits standard lathe and boring setups. With a minimum bore diameter of 0.09 inches and a maximum bore depth of 0.25 inches, the BB92A is engineered for tight-tolerance, small-bore applications where rigidity and geometry consistency are critical. Machinists and toolroom operators use this bar where high-performance carbide tooling is required.

The BB92A is suited for small-bore internal machining on CNC lathes and manual turning centers. Its 0.125-inch shank diameter and 1.5-inch overall length make it a practical choice for compact toolholders and small-bore applications in precision machining, mold work, and toolroom operations. The radial relief geometry reduces cutting forces and improves surface finish in confined bore profiles. This bar is appropriate for ferrous and non-ferrous materials where AlTiN+ coating provides thermal and wear resistance.

Key Features

• Submicron solid carbide construction for superior hardness and wear resistance
• AlTiN+ finish coating for elevated heat resistance and extended tool life
• Radial relief geometry reduces cutting forces in small-bore operations
• Right-hand cutting direction compatible with standard boring setups
• 0.09-inch minimum bore diameter for tight, small-bore internal machining
• Compact 1.5-inch overall length suits confined toolholder configurations

Compatibility

Designed as a direct-fit boring bar for small-bore internal turning applications using toolholders that accept a 0.125-inch shank diameter.

Installation Notes

Installation and use should be performed by qualified machinists familiar with lathe and boring bar setups. Secure the shank firmly in a compatible toolholder to the manufacturer-specified clamping torque before operation. Ensure the machine is fully powered down and the spindle is locked before changing or setting tooling. Do not exceed the maximum bore depth of 0.25 inches, and select feed rates and speeds appropriate for the workpiece material and coating type.