Sandvik Coromant 5957898 Boring Bar Modular Adapter C6

Product Description

The SANDVIK COROMANT 5957898 is a boring bar modular adapter designed for precision internal turning and boring operations on CNC machining centers and turning machines. This adapter features a 2.4803-inch (63 mm) bore diameter and a 1.6929-inch (43 mm) bore depth, providing a rigid, accurate interface between the machine spindle and the boring bar. Internal coolant delivery channels direct cutting fluid directly to the cutting zone, supporting longer tool life and chip evacuation in deep-bore applications. The C6 connection size ensures a secure, repeatable fit. Installation and adjustment are handled by a lock screw compatible with the 3212 010-409 specification. This adapter is specified and installed by CNC machinists and tool-room technicians.

This adapter is suited for both production and job-shop environments where modular tooling systems are used to reduce setup time and maintain dimensional consistency across multiple setups. It fits applications involving ferrous and non-ferrous materials where controlled bore tolerances are required. The C6 interface is a standard modular coupling used across a range of horizontal and vertical machining centers. Typical applications include finish boring of housings, bearing seats, and precision cylindrical bores in medium-to-large diameter workpieces. Compatible lock screw size is 1.7600 inches, referencing lock screw part 3212 010-409 as specified by the manufacturer.

Key Features

• 2.4803-inch (63 mm) bore diameter and body diameter for rigid, concentric coupling
• 1.6929-inch (43 mm) bore depth provides stable axial engagement
• Internal coolant delivery for efficient chip evacuation and tool-life extension
• C6 modular connection size for repeatable, high-precision spindle interface
• Lock screw size of 1.7600 inches compatible with lock screw 3212 010-409
• Manufacturer part number C6-SL70-RF-043 for cross-reference verification

Compatibility

Designed for use with C6 modular tooling systems. Lock screw compatibility references part 3212 010-409. The manufacturer cross-reference part number for this adapter is C6-SL70-RF-043. No additional specific machine model compatibility was provided in the product data.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician following the machine tool builder and tooling system guidelines. Disengage and lock out the machine spindle before mounting or removing the adapter. Ensure all mating surfaces are clean and free of chips or burrs before assembly to maintain concentricity and connection integrity. Torque the lock screw according to the tooling system manufacturer specifications - do not overtighten or substitute incompatible fasteners.