Indexable insert milling cutter Xtra·tec® S3

roughingdeep-cuttinghigh feed rate

Maximum stability for deep depths of cut and high chip volumes
Walter Xtra·tec® S3 High-feed milling cutters M6420 enable large depths of cut and feeds even with unstable components and difficult machining or clamping situations. Key design features include a novel, patent-pending chip clearance space, up to three cooling channels per cutting edge for enhanced cooling, and large contact surfaces at the insert seats to ensure maximum stability.

Greater rigidity, reduced heat, efficient chip removal
The tool body delivers up to 30% higher rigidity (FEM analysis), reducing cutting and ejection forces and increasing stability and tool life. Enlarged chip clearance spaces enable safe evacuation of large chip volumes. The enhanced cooling concept with additional channels further extends tool life.

Optimized coolant supply
Targeted coolant supply maximizes the use of the coolant volume available on the machine without pressure loss. Up to three coolant channels per insert seat reduce heat at the cutting edge while ensuring efficient chip removal—particularly at high feed rates and large depths of cut.

New feature: Indexable insert nomenclature

• L5 = Light
• M5 = Medium
• R5 = Rough

The nomenclature simplifies identification. The indexable inserts have four cutting edges and are available in wear-resistant Tiger·tec® Gold grades to improve cost-effectiveness.

Characteristics / technical specifications

• Product family / series: Xtra·tec® S3
• Commercial designation / model reference on page: M6420
• Tool type: High-feed milling cutter
• Chip clearance: Novel, patent-pending chip clearance space design for large chip volumes
• Coolant: Targeted coolant supply with up to three cooling channels per insert seat (up to 3 channels per cutting edge)
• Rigidity: Up to 30% higher tool body rigidity (FEM analysis)
• Insert: Indexable inserts with four cutting edges
• Insert grades: Tiger·tec® Gold grades (wear-resistant)
• Insert nomenclature: L5 (Light), M5 (Medium), R5 (Rough)
• Benefits: Maximum stability for deep depths of cut; reduced cutting and ejection forces; improved tool life; efficient chip removal at high feed rates
• Typical application: High-feed milling with large depths of cut and high chip volumes, including unstable components or difficult clamping situations