DNGG150408M-MN3 WNN10 Wendeplatten - Walter Tools

Take advantage of the combination of coated carbide grade WNN10, MN3 chipbreaker and robust rhombic geometry for steady chip control and predictable tool life; order directly via Metav Werkzeuge or consult our specialists for application advice.

DNGG150408M-MN3 WNN10 indexable turning insert — Rhombic 55°, 0.8 mm corner radius (Walter Tools)

The DNGG150408M-MN3 WNN10 is a coated cemented-carbide indexable turning insert engineered for stable roughing and semi-finishing operations where consistent chip formation and reliable edge life are required.

• Coated carbide grade WNN10
• Rhombic 55° geometry for flexible cutting
• Negative rake 0° for robust cutting
• Corner radius 0.8 mm for strength

Consistent chip control that keeps production running

The insert’s combination of the WNN10 coated carbide grade and the MN3 chipbreaker delivers predictable chip formation and evacuation, reducing interruptions caused by chip jams. The chipbreaker is tuned to moderate cutting depths and feeds, so the machining process benefits from fewer manual interventions and more stable cycle times. Explaining the technical side: a chipbreaker redistributes cutting forces and breaks chips into manageable lengths, which in turn lowers the risk of surface damage and tool overload. For manufacturers seeking higher line throughput, this translates into measurable process reliability and lower rework rates.

Geometry built for strength and adaptable turning strategies

A rhombic 55° insert offers a versatile approach to turning: the angle supports both general-purpose cutting and challenging interrupted cuts, while the 0° negative rake increases edge robustness under heavy engagement. The 0.8 mm corner radius gives the cutting edge additional resistance to chipping, which is particularly advantageous when roughing or handling variable stock conditions. In practice, this geometry enables operators to maintain higher metal removal rates with less concern for premature edge failure, improving uptime and tool-change predictability.

Coating and grade designed for stable tool life

The grade is a coated cemented carbide formulation that balances wear resistance and toughness, aiming to extend usable edge life across a range of operations. Coatings reduce flank and crater wear by acting as a thermal and chemical barrier at the cutting zone; paired with a carbide substrate, they preserve cutting-edge integrity under continuous loading. When process stability is the priority, a coated grade such as this helps maintain dimensional consistency across batches and contributes to a lower cost per component over the life of the insert.

Application guidance and integration into production

This insert is supplied as the DNGG150408M-MN3 WNN10 variant and is manufactured to tolerance class G. For correct material pairing and cutting-data optimisation, consult the Walter product matrix and machining recommendations; material suitability should be verified against specific workpiece alloys and hardness levels. The insert’s form factor and chipbreaker make it suitable for conventional turning set-ups and many CNC lathes; integration is straightforward when the toolholder matches the DNGG15 insert profile. For tailored cutting parameters or to confirm compatibility with a particular turning strategy, Metav Werkzeuge’s technical advisors can provide detailed recommendations.

Contact Metav Werkzeuge for tailored machining data or to request the Walter Tools DNGG150408M-MN3 WNN10 insert and receive specialist advice by phone or email: info@metav-werkzeuge.com / +49 2822 7131930

Technical data

• Article number: DNGG150408M-MN3-WNN10-WALTER
• Product type: indexable turning insert
• Designation: DNGG150408M-MN3 WNN10

Facts

• Size: 15
• Thickness: 04
• Corner radius: 0.8 mm
• Geometry angle: 55°
• Free rake angle: 0° (negative)
• Tolerance class: G

Special features

• Grade: WNN10 (coated cemented carbide)
• Chipbreaker: MN3
• Plate form: Rhombus 55°
• Series: Walter Schneidstoffsorte - Serie offen
• Execution: G

FAQ

What chip control advantages does the MN3 chipbreaker provide?
The MN3 chipbreaker on the DNGG150408M-MN3 WNN10 insert promotes shorter, controllable chips and reduces the risk of entanglement, improving process reliability in turning operations.

Is the insert suitable for heavy roughing or only finishing cuts?
Thanks to the negative rake and 0.8 mm corner radius, this Walter Tools insert is designed for robust cutting and is well suited to heavy roughing as well as semi-finishing, depending on cutting data and holder rigidity.

How should the coated grade WNN10 be selected against other grades?
Select WNN10 for applications where a balance of wear resistance and toughness is required; consult the Walter product matrix for direct comparisons and recommended cutting parameters for specific materials.

Which toolholder profile is required for this insert?
The DNGG150408M-MN3 insert fits standard holders designed for DNGG15-style rhombic 55° inserts; verifier holder compatibility with the insert designation before mounting.

How does the rhombic 55° geometry affect cutting strategy?
Rhombic 55° geometry offers a compromise between strength and cutting edge accessibility, enabling flexibility between roughing and finishing passes while maintaining edge resilience.

Manufacturer: Walter Tools / Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen; Germany