SDMT120408-D57 WKK25G Wendeplatten - Walter Tools

Benefit from the combination of the Tiger·tec Gold coating, a precise 15° clearance angle and a 0.8 mm corner radius for consistent, productive machining of cast iron; order the SDMT120408-D57 WKK25G indexable milling insert directly via Metav Werkzeuge or ask our consultants for tailored cutting data.

SDMT120408-D57 WKK25G — Indexable milling insert, Tiger·tec Gold, for cast iron | Walter Tools

The SDMT120408-D57 WKK25G is a square indexable milling insert engineered for high-productivity machining of cast iron, combining a wear-resistant coating with a chipbreaker designed for short, broken chips.

Tiger·tec Gold coating for extended life
Optimised for cast iron (ISO K)
15° clearance angle for secure cutting
Square 90° form with 0.8 mm corner radius

Maximise productivity when machining cast iron

The Tiger·tec Gold coating delivers improved wear resistance and stability under the intermittent cutting typical of cast iron. This allows for longer tool life and fewer insert changes, which reduces downtime and increases throughput. The specified WKK25G grade is balanced for abrasive wear control and toughness, making it suitable for the frequent, short-chipping behaviour of cast iron. By selecting a coating and grade designed for this material class, firms achieve predictable performance and a lower total cost per component produced.

Achieve consistent surface quality with secure cutting geometry

A 15° clearance angle and the square 90° form of the insert provide reliable cutting engagement and predictable chip flow in milling operations. The integrated D57 chipbreaker supports controlled chip formation, reducing the risk of chip jamming and improving surface finishes. For operators and process planners, this translates into fewer interruptions for chip management and a more consistent dimensional result without complex fixture changes.

Reduce process variability through stable tool life

The insert’s combination of coated hardmetal substrate and the Tiger·tec Gold technology is designed for stable edge performance over extended cycles. Stable cutting edges lower the likelihood of sudden tool failure and contribute to reproducible machining rates. In production environments where repeatability is essential, the insert supports consistent cycle times and reduces the need for frequent tool qualification or corrective adjustments.

Simple selection and integration into existing tool systems

The SDMT120408-D57 geometry fits common indexable milling holder systems and is straightforward to map into existing tool lists. The clear identification of the WKK25G grade and the chipbreaker code helps maintenance teams and buyers choose the correct insert for cast iron tasks without extensive trial cuts. For shops aiming to streamline tooling inventories, the insert offers a balanced, general-purpose solution for a wide range of cast-iron milling applications.

Contact Metav Werkzeuge for cutting parameters, integration advice and sample orders for the SDMT120408-D57 WKK25G indexable milling insert — eMail: info@metav-werkzeuge.com | Tel: +49 2822 7131930

Technical data

• Article number / SKU: SDMT120408-D57-WKK25G-WALTER
• Label: Fräswendeschneidplatte SDMT120408-D57 WKK25G Walter Tools
• Manufacturer: Walter Tools
• Series: Tiger-tec Gold
• Grade: WKK25G
• ISO designation: SDMT120408-D57 WKK25G

Core measurements and codes

• Clearance angle: 15°
• Corner radius: 0.8 mm
• Plate size code: 12
• Thickness code: 04
• Tolerance class: M

Designs and special features

• Coating: Tiger·tec Gold
• Chipbreaker: D57
• Plate form: Square 90°
• Application: Optimised for cast iron (ISO K)
• Execution / style code: T

FAQ

What materials is this insert intended for?
The SDMT120408-D57 WKK25G insert is designed and optimised for machining cast iron (ISO K) and is balanced to manage abrasive wear and short, breaking chips.

What does the WKK25G grade mean for tool life?
WKK25G denotes a Walter Tools coated hardmetal grade within the Tiger·tec Gold family; it is formulated to provide stable wear resistance and consistent performance in cast-iron applications.

How does the D57 chipbreaker affect machining?
The D57 chipbreaker on the SDMT120408-D57 supports controlled chip formation and evacuation, improving surface quality and reducing the chance of chip-related interruptions during milling.

Is this insert compatible with standard square milling holders?
Yes, the SDMT120408-D57 geometry and square 90° form are compatible with common indexable milling holders that accept this ISO-style insert format.

Which production benefits can be expected from using this insert?
Using the SDMT120408-D57 WKK25G typically results in longer tool life, fewer insert changes and more consistent cycle times when machining cast iron, supporting higher overall productivity.

Manufacturer: Walter Tools; The Walter AG (brand: Walter Tools) with headquarters in Tübingen, Germany, is part of the Sandvik Group.

Protected trademarks and trade names are the property of their respective owners and are mentioned here for explanatory purposes only. There is no affiliation between our company and the brands referenced. The article offered is an original, factory-new product of the manufacturer.