Sandvik Coromant 6408291 CAT40 to Capto Taper Adapter

Product Description

The SANDVIK COROMANT 6408291 is a CAT40 outside taper to Capto modular connection adapter designed for use in CNC machining centers that require a bridge between a CAT40 spindle and a Capto-style tooling system. This adapter features a C3 inside modular connection, a 30mm projection, and a 32mm nose diameter. Through-coolant capability allows cutting fluid to pass directly through the adapter to the cutting tool, supporting high-performance machining operations where heat and chip evacuation are critical. It is installed by machinists and CNC tooling specialists during tool setup or spindle interface changeovers.

This adapter is suited for production machining environments running CAT40-equipped machining centers that need to utilize Capto modular tooling assemblies. The C3 Capto inside connection accommodates a range of Capto-compatible cutting units and extensions. With an overall length of 98.40mm and a nose diameter of 32mm, this adapter is appropriate for applications where compact projection and precise radial runout are required, such as boring, milling, and turning operations on multi-task or dedicated CNC equipment.

Key Features

• CAT40 outside taper interfaces directly with CAT40 spindles — no additional adapter required
• C3 Capto inside modular connection enables use of Capto-compatible tooling assemblies
• 30mm projection minimizes overhang and supports rigidity in tight-clearance setups
• 32mm nose diameter accommodates standard C3 Capto tooling units
• Through-coolant design directs cutting fluid to the tool tip for improved tool life and chip control
• Overall length of 98.40mm suits typical CNC machining center tool magazine requirements

Compatibility

Designed for use with CAT40-spindle machining centers requiring a CAT40 to Capto C3 modular interface. No specific compatible machine models were stated in the product data.

Installation Notes

Installation should be performed by a qualified CNC tooling technician or machinist. Before installing or removing the adapter, the machine spindle must be fully stopped and the machine placed in a safe, locked-out state per applicable shop safety procedures. Ensure all mating tapers and Capto interfaces are clean and free of chips or coolant residue before assembly. Torque retention knobs or pull studs to the spindle manufacturer specifications — do not use values not confirmed in the machine or tooling documentation.