ZDGT20A508R-K85 WMG40 Wendeplatten - Walter Tools

Benefit from the combination of the coated carbide WMG40 grade and the K85 chipbreaker for reliable chip control and extended edge life; the 15° relief angle and 0.8 mm corner radius support precise finishing and repeatable results. Order the ZDGT20A508R-K85 WMG40 indexable milling insert directly via Metav Werkzeuge or consult the technical team for application-specific guidance.

ZDGT20A508R-K85 WMG40 Indexable milling insert — 15° relief, 0.8 mm corner radius | Walter Tools

The ZDGT20A508R-K85 WMG40 is an indexable milling insert designed for versatile finishing and light to medium roughing where a coated carbide grade with controlled chip formation is required.

• Coated carbide grade WMG40
• 15° relief angle for smooth engagement
• 0.8 mm corner radius for consistent edge integrity
• K85 chipbreaker for reliable chip control
• 20 mm nominal insert size

Increased productivity through stable chip control

The combination of the WMG40 grade and the K85 chipbreaker is engineered to deliver consistent chip formation and reduced edge degradation, which directly improves cycle times and tool life. As a coated carbide solution, the insert offers a balance between wear resistance and toughness, making it suitable for many general milling tasks. The measurable benefit is fewer interruptions for tool changes and a more predictable machining process, supporting higher throughput in batch and single-piece production alike.

Precision benefits from geometry and tolerance

A 15° relief angle together with a 0.8 mm corner radius stabilises cutting forces and helps maintain a consistent cutting edge during finishing passes. The specified tolerance class G and the plate thickness A5 ensure dimensional stability in clamping and indexing, which contributes to repeatable part quality. For applications sensitive to surface finish and dimensional accuracy, these geometric characteristics reduce the risk of chatter and minimise rework.

Application guidance and material suitability

Material suitability for this insert is catalog-dependent; the grade description therefore recommends checking the manufacturer’s product matrix for specific recommendations. The WMG40 grade is described as a coated carbide class in the series information, and the insert is intended for a broad material spectrum when the correct cutting data are applied. For unfamiliar materials or specialised alloys, consult the product matrix to select cutting parameters that preserve tool life and component integrity.

For tailored recommendations on using Walter Tools ZDGT20A508R-K85 WMG40 inserts and to obtain the current product matrix, contact Metav Werkzeuge for technical consultation at info@metav-werkzeuge.com or by phone on +49 2822 7131930.

Technical Data

• Article number: ZDGT20A508R-K85-WMG40-WALTER
• Product name: ZDGT20A508R-K85 WMG40
• Product type: Indexable milling insert
• Manufacturer: Walter Tools

Facts

• Insert size: 20 mm
• Relief angle: 15°
• Corner radius: 0.8 mm
• Thickness: A5
• Tolerance class: G

Special features

• Grade: WMG40
• Chipbreaker: K85
• Material: Catalog-dependent
• Coated carbide
• Series: Walter Schneidstoffsorte - Serie offen

FAQ

Which materials is this insert suitable for?
Material suitability should be verified against the manufacturer product matrix; the ZDGT20A508R-K85 WMG40 is a coated carbide grade and the matrix lists the recommended materials and cutting ranges.

What advantage does the K85 chipbreaker provide?
The K85 chipbreaker promotes controlled chip formation, improving evacuation and reducing the risk of built-up edge, which supports consistent surface finish and longer tool life with the ZDGT20A508R-K85 WMG40 insert.

How does the 15° relief angle influence cutting behaviour?
A 15° relief angle reduces the contact area behind the cutting edge, lowering friction and heat generation during engagement; this helps achieve smoother finishes and limits premature edge wear.

Can the insert be used for finishing and roughing operations?
The geometry, including the 0.8 mm corner radius, makes the insert suitable for finishing and light to medium roughing when matched with appropriate cutting data from the product matrix.

What does tolerance class G indicate for this insert?
Tolerance class G specifies the dimensional tolerances for the insert to ensure reliable seating and repeatable indexing in toolholders, which is important for maintaining part accuracy in serial production.

Hersteller: Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen, Germany

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