LDMT170408R-D57 WKK25G WKK25G Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Gold coating, a WKK25G grade tuned for abrasive cast iron, and a compact 15° clearance geometry to ensure predictable tool life and consistent metal removal in series production. Order the LDMT170408R-D57 WKK25G milling insert directly via Metav Werkzeuge or ask the Metav consultants for application support.

LDMT170408R-D57 WKK25G milling indexable insert for cast iron – 15° clearance by Walter Tools

LDMT170408R-D57 WKK25G is a rectangular indexable milling insert engineered for productive machining of cast iron components in industrial production and job-shop environments.

• Tiger·tec Gold coating for wear resistance
• Optimised for cast iron machining
• 15° clearance angle for stable engagement
• Rectangular shape, 0.8 mm nose radius

Deliverable productivity for abrasive cast iron workpieces

The combination of the Tiger·tec Gold coating and the WKK25G cutting grade is designed specifically for the demands of cast iron machining. The coated cemented carbide substrate resists the abrasive wear typical of grey and nodular cast iron, which reduces flank wear and extends usable edge life. As a result, cycle times remain stable across longer production runs and process windows widen, supporting higher throughput with fewer tool changes.

Predictable chip control and edge security for roughing operations

The D57 chipbreaker geometry and the 15° clearance deliver controlled chip formation and secure edge support during interrupted cuts typical of milling cast components. A 0.8 mm corner radius balances strength and form — it absorbs peak loads while allowing effective metal removal without excessive cutting forces. These geometry choices translate into fewer edge failures and consistent surface quality when roughing and semi-finishing cast iron parts.

Compact geometry for flexible integration and repeatable set-ups

The insert’s rectangular form and compact dimensions (approx. 17 mm nominal size with 4 mm thickness and tolerance class M) allow straightforward integration into standard face and shoulder milling cutters. The indexable design simplifies tool management: worn edges are rotated to a fresh corner, keeping machine downtime to a minimum and supporting predictable production planning. The insert’s T designation and robust grade make it suitable for medium- to heavy-duty roughing where cost-effective performance and process reliability are priorities.

For availability, application recommendations and quick supply of Walter Tools Tiger·tec Gold inserts such as the LDMT170408R-D57 WKK25G, contact Metav Werkzeuge for expert advice via info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number / SKU: LDMT170408R-D57-WKK25G-WALTER
• Product name: LDMT170408R-D57 WKK25G
• Manufacturer brand: Walter Tools
• Product type: Milling indexable insert
• Grade / sort: WKK25G
• Coating series: Tiger·tec Gold
• Form: Rectangular
• Chipbreaker: D57
• Clearance angle: 15°
• Corner radius: 0.8 mm
• Plate size: 17 mm
• Plate thickness: 4 mm
• Tolerance class: M
• Execution: T
• Material code: K (suitable for cast iron)
• Cast iron application: Yes

Facts

• Clearance angle: 15°
• Corner radius: 0.8 mm
• Size (nominal): 17 mm
• Thickness: 4 mm
• Tolerance class: M

Special features

• Tiger·tec Gold coating technology
• WKK25G coated cemented carbide grade
• Rectangular insert shape
• D57 chipbreaker for chip control
• Optimised for cast iron machining
• Indexable insert — multiple cutting edges
• Series: Tiger-tec Gold

FAQ

What materials is this insert designed for?
The LDMT170408R-D57 WKK25G from Walter Tools is optimised for cast iron applications; the WKK25G grade and Tiger·tec Gold coating address the abrasive nature and short, brittle chips typical of these materials.

How does the D57 chipbreaker affect cutting performance?
The D57 chipbreaker promotes consistent chip formation and evacuation during milling, reducing the risk of chip-related interruptions when using the LDMT170408R-D57 WKK25G insert in interrupted or continuous cuts.

Which geometry features increase edge life in this insert?
A 15° clearance angle combined with a 0.8 mm corner radius provides stable edge support and lowers peak loads on the cutting edge, helping to extend tool life under roughing conditions.

Can the insert be used for finishing operations?
The LDMT170408R-D57 WKK25G is primarily tuned for productive roughing and semi-finishing of cast iron; for high-quality finishing, a dedicated finishing grade and smaller nose radius are typically recommended.

What is the tolerance class and why does it matter?
Tolerance class M indicates the manufacturing precision of the insert and its fit in the pocket; consistent tolerances support repeatable set-ups and accurate cutter geometry across indexable insert changes.

Manufacturer/Responsible: AB Sandvik Coromant, Mossvägen 10, 811 34 Sandviken, Sweden, support.coromant@sandvik.com

Protected trademarks and trade names are the property of their respective owners. The brand name Walter Tools is mentioned for identification purposes only and does not imply any affiliation with Metav Werkzeuge. The offered item is an original, factory-new product of the manufacturer.