BCMT120408R-F55 WKK25G WKK25G Wendeplatten - Walter Tools

Take advantage of Tiger·tec Gold wear protection and the WKK25G grade for efficient, reproducible machining of cast iron; the robust chip control and 75° parallelogram geometry help maintain stable cutting conditions and extend tool life. Order the insert directly via Metav Werkzeuge or ask the consultants for application-specific cutting data.

BCMT120408R-F55 WKK25G milling insert — Tiger·tec Gold grade for cast iron by Walter Tools

The BCMT120408R-F55 WKK25G is an indexable milling insert designed for productive machining of cast iron, featuring a parallelogram 75° geometry and a dedicated F55 chipbreaker for controlled swarf management

• Tiger·tec Gold coating for high wear resistance
• Optimised for cast iron machining
• Parallelogram 75° form for versatile engagement
• 0.8 mm corner radius with F55 chipbreaker

High-efficiency machining of cast iron for predictable output

This insert is engineered for the demands of cast iron production work: the WKK25G grade, part of the Tiger·tec Gold series, combines a wear-resistant coating with a substrate tuned to the abrasiveness and short, breaking chips typical of cast materials. The result is a cutting edge that maintains its geometry longer under cyclic loading, which leads to fewer tool changes and a higher effective machine utilisation. For production environments where repeatability and reduced downtime are critical, the combination of coating performance and grade composition delivers measurable gains in process reliability.

Geometry and chip control that stabilise the cut

The parallelogram 75° insert form, together with a 0.8 mm corner radius and the F55 chipbreaker, is focused on creating stable chip flow and consistent cutting forces when milling cast iron. The 75° engagement angle offers a balance between radial contact and axial depth control, helping to reduce vibration and improve surface finish. The chipbreaker design disperses heat and promotes predictable swarf shapes, which supports longer tool life and less machine stoppage for manual clearing. These technical choices translate directly into a smoother production flow and improved finishing quality on ferritic or nodular castings.

Practical advantages for workshop planning and tool selection

Beyond immediate cutting performance, the insert’s tolerance class M and standardised ISO-style designation simplify stock management and toolholder matching. The insert thickness code and the 7° clearance angle are typical for robust milling applications, ensuring compatibility with common toolholders and stable clamping. Selecting this grade for cast-iron applications reduces the need for frequent trial runs: process planners gain a predictable baseline for speeds and feeds, and operators benefit from a cutting edge that resists abrasive wear while providing good surface integrity.

Discuss machining strategies for cast iron with Metav Werkzeuge to match the BCMT120408R-F55 WKK25G to the correct toolholder and cutting data for best productivity

Technical data

• SKU: BCMT120408R-F55-WKK25G-WALTER
• Designation: BCMT120408R-F55
• Grade: WKK25G
• Series: Tiger·tec Gold

Numerical data

• Clearance angle: 7°
• Corner radius: 0.8 mm
• Plate size: 12
• Thickness code: 04
• Tolerance class: M

Design & special features

• Plate form: Parallelogram 75°
• Chipbreaker: F55
• Material application: cast iron (K)
• Coating: Tiger·tec Gold
• Execution: T

FAQ

Which materials are best suited for this insert?
The insert is optimised for cast iron applications; the WKK25G grade and Tiger·tec Gold coating are tailored to abrasive, short-chip behaviour typical of cast materials.

What is the purpose of the F55 chipbreaker?
The F55 chipbreaker promotes controlled chip formation and heat dissipation when milling cast iron, supporting consistent surface finish and reduced risk of chip-related interruptions.

What geometry details affect cutting performance?
The parallelogram 75° form, 0.8 mm corner radius and 7° clearance angle combine to balance engagement, reduce vibration and enable stable cutting in heavy-duty milling.

Is the grade coated and what benefits does the coating provide?
Yes — the Tiger·tec Gold coating improves wear resistance and thermal stability, extending tool life and helping to maintain cutting-edge integrity under abrasive conditions.

How does this insert support production reliability?
By offering a wear-resistant grade and well-engineered chip control, the insert helps reduce tool changes and enables consistent cutting behaviour, which contributes to predictable cycle times and fewer process interruptions.

Manufacturer/Responsible: Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen, Germany

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