Sandvik Coromant 5729052 Boring Bar Reducing Adapter C4

Product Description

The SANDVIK COROMANT 5729052 is a boring bar reducing adapter with a C4 outside modular connection designed for use in precision internal boring operations on CNC turning and machining centers. This adapter reduces the modular connection interface to accept smaller boring bar units, allowing shops to extend tooling configurations without replacing the full tool assembly. Through-coolant capability delivers cutting fluid directly to the cutting edge, improving chip evacuation and thermal management during deep-bore operations. At 3.74 inches overall length and 1.78 pounds, the adapter is suited for close-tolerance work where rigidity and coolant access are both priorities. Installation is performed by qualified machinists or tooling technicians.

This reducing adapter fits into modular tooling systems that use the C4 Coromant Capto interface standard. It is appropriate for both production and job-shop environments running CNC lathes, turning centers, or mill-turn machines where modular boring bar assemblies are used. The through-coolant feature makes it well suited for applications involving difficult-to-machine materials, deep bores, or operations where chip control is critical to surface finish and tool life. Typical applications include finish boring, semi-finish boring, and precision diameter work in automotive, aerospace, and general metalworking contexts.

Key Features

• C4 outside modular connection for compatibility with Coromant Capto C4 tooling systems
• Through-coolant capable, directing fluid to the cutting zone for improved chip control and tool life
• Overall length of 3.74 inches supports reach requirements in typical CNC boring setups
• Compact, rigid adapter body at 1.78 pounds minimizes overhang-induced vibration
• Reduces modular connection size to accept smaller boring bar units without full assembly replacement

Compatibility

Designed as an OEM-style modular reducing adapter for CNC boring bar assemblies using a C4 outside modular connection interface.

Installation Notes

Installation is performed by a machinist or tooling technician. Ensure the machine spindle is fully stopped and the tool turret or spindle is locked out before mounting or removing the adapter. Torque the modular connection according to the machine tool manufacturer specifications for the C4 interface. Verify through-coolant passages are clear and the coolant supply line is properly connected before running the first cycle.