SNGA120412TM-4 WBH30 A Wendeplatten - Walter Tools

Benefit from the combination of CBN-grade WBH30 and a robust square geometry for extended edge life and reliable chip control; ideal for hardened-steel production cycles. Order the insert directly via Metav Werkzeuge or consult our specialists for application advice.

SNGA120412TM-4 WBH30 – Indexable turning insert, CBN grade for hardened steels | Walter Tools

The SNGA120412TM-4 WBH30 is an indexable turning insert engineered for heavy-duty hard turning and stable performance when machining hardened steels in industrial production environments

• CBN cutting grade WBH30 for hardened steels
• Square 90° insert geometry
• 12 mm insert size with 1.2 mm corner radius
• 0° negative rake for robust cutting

Consistent performance in hard turning

The CBN-based WBH30 grade delivers high wear resistance and predictable edge behaviour when machining hardened steels (H). Thanks to the CBN substrate, the insert maintains cutting-edge integrity under elevated contact temperatures and abrasive conditions, which translates into fewer changeovers and more stable cycle times. This stability supports tighter process windows and reduces scrap rates, helping production lines achieve consistent part quality without frequent tool downtime.

Geometry engineered for strength and chip control

A square 90° form combined with a 1.2 mm corner radius and the 0° negative rake creates a mechanically robust cutting edge suited to roughing and interrupted cuts. The geometry increases edge strength and distributes cutting forces, reducing the risk of edge chipping under heavy loads. The integrated chipbreaker (type 4) improves chip segmentation for demanding alloys, aiding machine tool coolant flow and swarf evacuation, which supports secure, repeatable machining cycles.

Application focus and process reliability

Designed as part of the Walter CBN / Hartstoff series, this insert is intended specifically for hard machining tasks and is suitable for working with pre-hardened and fully hardened steels. The combination of a purpose-built CBN grade and a stable insert geometry yields a reliable solution for production environments seeking reproducible results and reduced tool consumption. For process adaptation, the insert’s tolerance class G and series execution ensure compatibility with standard toolholder systems used in heavy-turning operations.

Contact Metav Werkzeuge to discuss the SNGA120412TM-4 WBH30 for specific machining scenarios or to arrange a technical application review with our specialists; email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: SNGA120412TM-4-WBH30-WALTER
• Label: Drehwendeschneidplatte SNGA120412TM-4 WBH30 Walter Tools
• Product type: Drehwendeschneidplatte (indexable turning insert)
• ISO designation: SNGA120412TM-4 WBH30
• Series: Walter CBN / Hartstoff
• Grade: WBH30
• Execution: A
• Tolerance class: G
• Form: Square 90°
• Free angle: 0° (negative)

Facts

• Insert size: 12
• Thickness code: 04
• Corner radius: 1.2 mm
• Chipbreaker: 4
• Clearance/rake: 0° (negative)

Special features

• CBN cutting grade for hard and wear-intensive machining
• Suitable for hardened steels (H) and prehardened steel applications
• Robust square geometry for heavy cuts
• Series optimised for stable chip formation and process reliability
• Manufacturer: Walter Tools

FAQ

Which materials is this insert suitable for?
The SNGA120412TM-4 WBH30 is specified for hardened steels (H) and is suitable for prehardened and fully hardened steel machining due to its CBN cutting grade.

What cutting grade and series does the insert use?
The insert uses the WBH30 CBN grade from the Walter CBN / Hartstoff series, developed for high wear resistance in hard machining tasks.

What are the key geometric features of the insert?
The insert features a square 90° form, a 1.2 mm corner radius and a 0° negative rake, providing strength for heavy-duty and interrupted cuts while aiding chip control with chipbreaker type 4.

Is this insert compatible with standard toolholders?
Yes, the SNGA120412TM-4 WBH30 follows standard ISO-style insert designation and tolerance class G, enabling compatibility with conventional turning toolholders designed for this insert geometry and size.

How does the WBH30 grade affect production reliability?
WBH30’s CBN composition ensures stable edge life and reduced wear under high temperatures and abrasive conditions, contributing to predictable tool life and fewer unscheduled tool changes in production.

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

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