Sandvik Coromant 6427831 Modular Grooving Head Size 40

Product Description

The SANDVIK COROMANT 6427831 is a modular grooving head designed for the CoroCut QD system. It functions as a cutting head for external and face grooving operations in CNC turning and machining centers. The head mounts to a compatible QD-system shank to form a complete modular tooling assembly. With a maximum depth of cut of 1.2598 inches (32.00 mm) and through-coolant capability, it supports aggressive material removal while maintaining thermal control at the cutting zone. Configured for right-hand cutting direction, this head is suited for machinists and tooling engineers setting up grooving operations on lathes and mill-turn machines.

This grooving head is intended for use in System Size 40 CoroCut QD tooling assemblies. It accepts QD Size G inserts, with full insert compatibility confirmed for the QD-NG-0300-0002-CM insert. The minimum hole diameter for internal application is 3.1496 inches (80.00 mm), making it applicable to medium-to-large bore grooving work. Typical use cases include face grooving, external grooving, and parting on production turning equipment where a modular, replaceable-head approach reduces changeover time and tooling inventory.

Key Features

• Right-hand cutting direction for standard lathe and turn-mill setups
• Maximum depth of cut of 1.2598 inches (32.00 mm) supports deep grooving passes
• Through-coolant design delivers coolant directly to the cutting edge for chip evacuation and heat control
• Compatible with QD Size G inserts, including QD-NG-0300-0002-CM
• Head length projection of 0.4724 inches (12.00 mm) for compact overhang geometry
• Modular head design allows fast insert-style changes without removing the full toolholder assembly

Compatibility

Designed for use in SANDVIK COROMANT CoroCut QD System Size 40 tooling assemblies. Accepts QD Size G inserts. Confirmed compatible insert: QD-NG-0300-0002-CM. Minimum bore diameter for application is 3.1496 inches (80.00 mm).

Installation Notes

Installation is performed by a qualified machinist or tooling technician. The machine spindle must be stopped and all axis motion halted before mounting or removing the grooving head. Verify that the shank interface is clean and free of chips or debris before seating the modular head. Confirm insert grade and geometry selection against the workpiece material before starting the cut; do not exceed the rated maximum depth of cut for the head.