Sandvik Coromant 5729783 Boring Bar Modular Adapter C8

Product Description

The SANDVIK COROMANT 5729783 is a boring bar modular adapter designed for use in precision machining applications where secure, repeatable boring tool connections are required. With a bore diameter of 3.1496 inches (80 mm) and a bore depth of 2.0866 inches (53 mm), this adapter provides a stable interface between the machine spindle and boring bar assemblies. The C8 connection size ensures rigid coupling and accurate tool positioning. External coolant delivery keeps cutting zones clear during deep boring operations. This adapter is installed by machinists and toolroom technicians working on CNC lathes, boring mills, and machining centers.

This adapter is suited for industrial machining environments requiring modular tooling flexibility. It is used in applications where a standardized C8 interface is specified, including heavy-duty boring operations on both horizontal and vertical machining centers. The 3.1496-inch body diameter and external coolant configuration make it appropriate for production and job shop settings where tool change time and rigidity are both priorities. Compatible lock screw part number 5758794 is specified for use with this adapter.

Key Features

• Bore diameter of 3.1496 inches (80 mm) for precise tool fit
• Bore depth of 2.0866 inches (53 mm) for secure tool engagement
• C8 connection size for standardized modular interface
• External coolant delivery to maintain cutting zone temperature control
• Lock screw size of 2.16 inches for secure clamping
• Compatible lock screw: 5758794

Compatibility

Designed for use with C8 modular tooling systems. Compatible lock screw is SANDVIK COROMANT part number 5758794. Manufacturer part number C8-ASHA-55085-20-AM is associated with this adapter.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician familiar with modular boring systems. Disengage spindle power and confirm the machine is in a safe, locked-out state before mounting or removing the adapter. Use the specified lock screw (5758794) and appropriate tooling keys when securing the boring bar into the adapter. Verify coolant line routing and connection integrity before returning the machine to operation.