Accupro B140750A Boring Bar 0.14 in Min Bore Solid Carbide

Product Description

The ACCUPRO B140750A is a solid carbide boring bar designed for precision internal boring operations on CNC lathes and manual turning centers. Manufactured from submicron-grade solid carbide with an AlTiN finish coating, this bar delivers superior hardness and heat resistance at the cutting zone. It features a 3/16-inch shank diameter, a 2-inch overall length, a minimum bore diameter of 0.14 inches, and a maximum bore depth of 0.75 inches. The right-hand cutting direction suits standard spindle configurations. Machinists and tool-room technicians working on small-diameter internal features will find this bar suited to tight-tolerance finish boring work.

This boring bar is intended for small-bore applications in precision machining environments, including production shops, tool rooms, and job shops running turning operations. It is well suited for boring small holes in ferrous and non-ferrous workpieces where dimensional accuracy and surface finish are critical. The submicron carbide substrate and AlTiN coating extend tool life in interrupted cuts and at elevated cutting speeds compared to standard carbide grades.

Key Features

• Submicron solid carbide substrate for improved wear resistance and edge integrity
• AlTiN finish coating for enhanced heat resistance and extended tool life
• Minimum bore diameter of 0.14 inches enables work on very small internal features
• Maximum bore depth of 0.75 inches suits short through-bore and blind-bore applications
• Right-hand cutting direction for standard lathe spindle setups
• 3/16-inch shank diameter for compatibility with standard small-bore tool holders

Compatibility

Designed as an OEM-style replacement or direct tooling addition for standard boring bar holders accepting a 3/16-inch round shank in CNC and manual turning applications.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Power down and lock out the machine spindle before seating or removing the boring bar from the tool holder. Ensure the shank is fully seated and clamped to the tool holder manufacturer's recommended procedure before resuming operation. Inspect the cutting edge for chips or wear before each use, as carbide tooling is brittle and can fail if run with a damaged edge.