Tungaloy 6864467 Indexable Boring Bar 2in Bore Steel

Product Description

The TUNGALOY 6864467 is a steel-body indexable boring bar designed for internal boring and turning operations on CNC lathes and machining centers. Built to Turning A series specifications, it accepts a trigon-shaped insert with a 1/2-inch inscribed circle and uses a spring-clamp insert holding method for secure, repeatable indexing. The 95-degree lead angle and negative axial/radial rake geometry reduce cutting forces and promote chip clearance in tight bores. Coolant-through capability delivers cutting fluid directly to the cutting zone, extending insert life and improving surface finish in deep or interrupted cuts.

This boring bar is suited for production and job-shop environments where consistent bore quality is required. The 1-1/2-inch shank diameter provides rigid support in standard boring bar holders, and the 14-inch overall length accommodates moderate to long-reach setups. With a 2-inch minimum bore diameter and a maximum bore depth of 2.16 inches, it fits tight-tolerance internal diameter work on ferrous and non-ferrous workpieces. It is intended for installation and use by machinists and tooling technicians in metalworking shops.

Key Features

• Spring-clamp insert holding method for fast, repeatable insert changes
• Accepts trigon inserts with 1/2-inch inscribed circle and compatible insert size code 43
• Coolant-through design directs fluid to the cutting edge for improved tool life
• 95-degree lead angle with negative axial and radial rake reduces cutting forces
• Steel shank construction provides rigidity for long-reach boring setups
• Compatible with both boring and turning applications in a single toolholder

Compatibility

Designed for use with trigon-style indexable inserts with a 1/2-inch (0.5000-inch) inscribed circle, compatible insert size code 43, and insert thickness of 0.1870 inches. Fits standard 1-1/2-inch boring bar holders used in CNC turning and machining center applications.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and the machine is in a safe lockout state before changing inserts or mounting the boring bar. Confirm the shank is fully seated and clamped to the required depth in the boring bar holder before starting a cut. Verify coolant-through passages are clear and coolant supply is connected before engaging the coolant system.