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The ACCUPRO ACC-BB140500 is a solid carbide boring bar designed for precision internal boring operations on machining centers, lathes, and CNC turning equipment. Built from submicron-grade carbide with a bright finish coating, it delivers tight tolerances and consistent surface finishes in small-bore applications. The right-hand cutting direction suits standard setups without special toolholding adapters. With a 0.14 inch minimum bore diameter and a 3/16 inch shank, this bar handles fine-detail work where insert tooling cannot reach. Machinists and toolroom technicians working on tight-tolerance bores rely on this style of bar for its rigidity and repeatability.
This boring bar is suited for small-bore, close-tolerance work in job shops, tool rooms, and production machining environments. The 0.5 inch maximum bore depth makes it appropriate for shallow through-bores and blind bores in ferrous and non-ferrous materials. The compact 2 inch overall length fits into standard small-bore toolholders and quick-change setups. It is most commonly used in applications where minimum bore diameter constraints rule out adjustable insert boring heads.
Designed as an OEM-style replacement and standard tooling option for small-bore boring operations on CNC lathes, machining centers, and manual turning equipment using 3/16 inch shank boring bar holders.
Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before mounting or removing the boring bar. Secure the shank fully within the toolholder to the recommended clamping depth to minimize overhang and reduce chatter. Verify cutting direction and spindle rotation match before initiating a cut.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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