Sandvik Coromant 6412709 Tapping Chuck M8-M20 ER25

Product Description

The SANDVIK COROMANT 6412709 is a modular connection tapping chuck designed for rigid and floating tap holding in CNC machining centers and turning centers equipped with modular tooling interfaces. It accepts taps ranging from M8 to M20 and uses an ER25 collet system for secure, concentric tap retention. The chuck features through-coolant capability, directing cutting fluid directly to the tap cutting edge for improved chip evacuation and tool life. With a projection of 4.8071 inches and a nose diameter of 1.6535 inches, this chuck suits medium-depth tapping applications where reach and rigidity are both required. Installed by machinists and CNC tooling setup technicians.

This tapping chuck is suited for production tapping operations in ferrous and non-ferrous materials on vertical and horizontal machining centers. The modular connection shank interfaces with compatible modular tooling systems, making it straightforward to swap between setups without disturbing the machine spindle. The ER25 collet system is a widely adopted standard, providing good grip force across the M8 to M20 tap capacity range. Through-coolant support makes this chuck a practical choice for blind-hole and deep-hole tapping where chip packing is a concern.

Key Features

• M8 to M20 tap capacity range for medium-range threading applications
• ER25 collet system for concentric, repeatable tap retention
• Through-coolant capable for improved chip evacuation and tap life
• 4.8071 inch projection provides reach for recessed or deep features
• Modular connection shank for quick, repeatable tool changes on modular tooling systems
• Nose diameter of 1.6535 inches suits standard tooling clearance requirements

Compatibility

Designed for use with modular connection tooling systems accepting this shank interface. Collet compatibility requires ER25 tap collets sized for the target tap shank diameter within the M8 to M20 range. Consult the machine tool and tooling system documentation to confirm modular interface compatibility before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician familiar with modular tooling systems. Power down and lock out the machine spindle before mounting or removing the chuck. Ensure the modular connection mating surfaces are clean and free of chips or coolant residue before assembly to maintain runout tolerance. Torque the collet nut to the collet manufacturer specification using the appropriate ER spanner wrench.