Sandvik Coromant 5729258 Boring Bar Modular Adapter C6

Product Description

The SANDVIK COROMANT 5729258 is a boring bar modular adapter designed for precision internal turning and boring operations on CNC machining centers and turning centers. This adapter features a 1.2598-inch (32 mm) bore diameter, a C6 modular connection size, and a body diameter of 2.4803 inches (63 mm). Internal coolant delivery channels direct cutting fluid directly to the tool tip, supporting chip evacuation and thermal management during deep-bore operations. The adapter accepts a lock screw compatible with part 3212 010-308 and is suited for shops running modular tooling systems that demand repeatable, rigid setups. Machinists and tooling specialists install this adapter as part of a configured boring bar assembly.

This modular adapter is intended for use in production and job-shop environments where modular boring bar systems are standardized. It fits into C6-interface tooling assemblies and supports bore depths up to 2.1654 inches (55 mm). The body length of 3.1890 inches (81 mm) accommodates typical overhang requirements in medium-diameter bores. Applications include finishing and semi-finishing of internal diameters on steel, cast iron, and similar workpiece materials in both horizontal and vertical machining setups.

Key Features

• C6 modular connection for rigid, repeatable adapter-to-holder interface
• 1.2598-inch (32 mm) bore diameter with 55 mm bore depth capacity
• Internal coolant delivery for improved chip evacuation and tool life
• Body diameter of 2.4803 inches (63 mm) provides stability at extended reach
• Lock screw thread interface compatible with lock screw 3212 010-308
• Body length of 3.1890 inches (81 mm) suits medium overhang boring setups

Compatibility

Designed for use in C6 modular boring bar tooling systems. Lock screw compatibility is specified for part number 3212 010-308. Verify connection interface and bore diameter requirements against your existing tooling assembly before installation.

Installation Notes

Installation should be performed by a qualified machinist or tooling specialist familiar with modular boring bar systems. Power down and lock out the machine spindle before assembling or disassembling the adapter from the tooling stack. Ensure mating connection surfaces are clean and free of chips or burrs before torquing the lock screw. Confirm internal coolant passages are clear and aligned with the machine's coolant supply before running.