Micro 100 BB-140250G Boring Bar Solid Carbide Right Hand

Product Description

The MICRO 100 BB-140250G is a solid carbide boring bar designed for internal diameter machining in small-bore applications. It features a minimum bore diameter of 0.140 inches (9/64 inches), a maximum bore depth of 0.250 inches (1/4 inches), and a 3/16-inch shank diameter. The right-hand cutting direction and 0.006-inch corner radius make it suited for precision finishing and sizing passes in tight bore geometries. At 2 inches overall length and weighing 0.028 pounds, it fits compact toolholders and small lathes or boring setups. Machinists and tool-and-die professionals are the primary users of this type of tooling.

This boring bar is intended for use in precision machining environments where small internal diameters require consistent, repeatable material removal. Typical applications include finish boring of small holes in metal workpieces on CNC lathes, manual lathes, or dedicated boring machines. The solid carbide construction supports use in harder workpiece materials and delivers the rigidity needed to hold tight tolerances in shallow-depth bores.

Key Features

• Solid carbide construction for rigidity and wear resistance in small-bore machining
• Minimum bore diameter of 0.140 inches (9/64 inches) for access to tight internal geometries
• Maximum bore depth of 0.250 inches (1/4 inches)
• Right-hand cutting direction for standard lathe rotation
• 0.006-inch corner radius for controlled surface finish on bore walls
• 3/16-inch shank diameter for compatibility with standard small-bore toolholders

Compatibility

Designed as an OEM-style replacement or standard tooling selection for small-bore internal diameter operations on lathes and boring machines accepting a 3/16-inch shank boring bar.

Installation Notes

Installation is performed by qualified machinists. Ensure the machine spindle is fully stopped and locked out before mounting or adjusting the boring bar. Secure the shank firmly in the toolholder to minimize overhang and reduce chatter risk. Verify bore diameter and depth clearances against the workpiece before initiating a cut.