Sandvik Coromant 5726343 Boring Grooving Bar Holder

Product Description

The SANDVIK COROMANT 5726343 is a boring and grooving bar holder designed for precision internal machining operations on CNC turning centers and lathes. It features a 6mm inside diameter bore, a 1-inch (25mm) outside diameter shank, and a 150mm overall length, making it well-suited for tight-tolerance grooving and boring passes in confined bores. Through-coolant capability directs cutting fluid directly to the cutting edge, supporting chip evacuation and extended tool life during deep or interrupted cuts. This holder belongs to the CoroTurn XS series, engineered for small-part turning and Swiss-style machining environments. Machinists and CNC programmers working on precision components will find this holder compatible with CoroTurn XS insert systems.

This bar holder is intended for use in small-bore internal turning, grooving, and profiling applications on CNC lathes and turning centers. It is particularly relevant in industries requiring close-tolerance internal features on small-diameter workpieces, such as medical device manufacturing, aerospace components, and hydraulic fittings. The 25.4mm head diameter and 150mm OAL allow reach into bores where larger tooling cannot operate. The through-coolant design is especially beneficial in high-speed operations where heat and chip buildup are concerns.

Key Features

• 6mm inside diameter bore for compatibility with CoroTurn XS small-bore insert systems
• 1-inch (25mm) outside diameter shank fits standard turning center tool stations
• 150mm overall length provides reach for deeper internal features
• 25.4mm head diameter supports stability at the cutting zone
• Through-coolant design improves chip evacuation and thermal management at the cutting edge
• CoroTurn XS series construction designed for small-part precision turning applications

Compatibility

Designed for use within the CoroTurn XS tooling system. Compatible with CNC turning centers and lathes equipped with 1-inch OD tool holders and through-coolant supply. Specific insert and adapter compatibility should be confirmed against CoroTurn XS system documentation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician with the machine spindle fully stopped and the control in a safe locked-out state. Confirm that the machine tool station accommodates a 1-inch OD shank before mounting. Verify through-coolant port alignment with the machine tool block before torquing to the machine manufacturer's specified clamping requirements. Do not exceed the insert system's recommended depth-of-cut or overhang ratios specified in the CoroTurn XS application guidelines.