Accupro ACC-BBL490750 Boring Bar Left Hand Solid Carbide

Product Description

The ACCUPRO ACC-BBL490750 is a solid carbide boring bar engineered for precision internal boring operations on CNC lathes and manual turning centers. Built from submicron-grade carbide with a bright finish coating, it delivers the rigidity and edge retention needed for tight-tolerance bores. The bar accepts a minimum bore diameter of 0.49 inches and reaches a maximum bore depth of 0.75 inches. With a 0.5-inch shank diameter and a 3-inch overall length, it fits standard boring bar holders used in production and job-shop turning applications. The left-hand cutting direction suits specific toolpath orientations and back-boring setups. Machinists and CNC operators install this bar when consistent dimensional accuracy is required in small-diameter internal features.

This boring bar is suited for production machining environments where submicron carbide grade provides superior wear resistance compared to standard carbide grades. Its compact geometry makes it appropriate for short-reach internal boring on ferrous and non-ferrous workpieces. The bright finish reduces built-up edge in certain materials. Job shops, aerospace shops, and general manufacturing operations handling small-bore turning work are the primary users of this tool.

Key Features

• Submicron solid carbide construction for high wear resistance and edge stability
• Left-hand cutting direction for specific toolpath and back-boring applications
• Minimum bore diameter of 0.49 inches suits small internal features
• Maximum bore depth of 0.75 inches
• Bright finish coating reduces friction and built-up edge tendency
• 0.5-inch shank diameter fits standard boring bar holders

Compatibility

Designed for use in standard 0.5-inch boring bar holders on CNC lathes and manual turning centers capable of internal boring operations.

Installation Notes

Installation is performed by a machinist or CNC tooling technician. The machine spindle must be powered down and the turret or tool block secured before inserting or removing the boring bar. The bar should be clamped securely in a matched-diameter boring bar holder with minimal overhang to reduce chatter. Always verify cutting direction and toolpath orientation before running the first pass.