Scientific Cutting Tools BB92 Radial Relief Boring Bar

Product Description

The SCIENTIFIC CUTTING TOOLS BB92 is a radial relief boring bar designed for precision internal turning and small-bore machining operations. Manufactured from submicron-grade solid carbide, this tool delivers consistent edge integrity and wear resistance in demanding cutting applications. The uncoated finish suits materials where coated tools may cause built-up edge issues. With a 0.09 inch minimum bore diameter and a 1/8 inch shank, the BB92 is engineered for tight-tolerance work in small bores. Machinists and toolroom professionals specify this bar for micro-bore applications on CNC lathes and manual turning centers where rigidity and concentricity are critical.

The BB92 is suited for internal boring operations in small-diameter bores, including fine finishing passes and light material removal on ferrous and non-ferrous workpieces. Its right-hand cutting direction is compatible with standard spindle rotation on most lathes. The compact 1-1/2 inch overall length reduces overhang and minimizes chatter, making it a practical choice for shallow-bore applications in production and jobshop environments. This tool is typically used by machinists working in precision machining, toolroom, and metalworking trades.

Key Features

• Submicron solid carbide construction for superior hardness and edge retention in small-bore cutting
• 0.09 inch minimum bore diameter enables machining of very small internal diameters
• Radial relief geometry reduces cutting forces and supports smooth chip evacuation
• Right-hand cutting direction for standard spindle rotation compatibility
• 1/8 inch shank diameter sized for standard small-bore toolholders and collet systems
• Uncoated finish suitable for applications where coating buildup or edge adhesion is a concern

Compatibility

Designed as an OEM-style replacement and standard tooling selection for small-bore radial relief boring applications requiring a 1/8 inch shank diameter on CNC or manual turning equipment.

Installation Notes

Installation should be performed by a qualified machinist familiar with boring bar setup procedures. Ensure the machine spindle is fully stopped and the toolholder is clean and free of debris before seating the shank. Confirm shank clamping torque meets toolholder manufacturer specifications before initiating a cut. Verify bore diameter clearance and depth stop before engaging the workpiece to avoid tool or workpiece damage.