SPMT 120408 AH120 Wendeplatten - Tungaloy

Benefit from a wear-resistant PVD-coated AH120 carbide grade and precise ISO-compatible geometry for stable, process-safe turning; order the SPMT120408 AH120 Tungaloy turning insert directly via Metav Werkzeuge or ask our consultants if needed.

SPMT120408 AH120 ISO turning insert, PVD-coated carbide — Tungaloy

A SPMT120408 AH120 turning insert designed for external and internal turning, offering a sharp, process-secure cutting edge and reliable chip control.

• PVD-coated carbide grade AH120
• Sharp, process-secure cutting edge
• Square 12 mm plate, 90° geometry
• Single-sided chipbreaker, 0.8 mm radius

Stable cutting performance through optimised grade and coating

The combination of a PVD surface and a wear-resistant carbide substrate in grade AH120 delivers reproducible cutting behaviour under demanding conditions. This material pairing reduces flank wear and minimises the risk of edge chipping, which translates into longer in-process intervals and fewer tool changes. For production lines where repeatability and uptime are decisive, the insert offers a clear advantage by maintaining a sharp cutting edge while preserving surface quality over extended sequences.

Precision geometry for reliable mounting and consistent results

Designed to the ISO series, the square plate with 12 mm side length and a plate thickness of 4.76 mm provides a stiff, repeatable contact in compatible holders. The 90° approach angle and 11° clearance ensure predictable tool–workpiece engagement, while the 0.8 mm nose radius balances form accuracy and cutting strength. These measurable parameters support reliable set-up and limit variability between insert changes, which helps to shorten cycle times and maintain tolerances in serial turning operations.

Efficient chip control and surface finish with a single-sided breaker

The one-sided chipbreaker is engineered to guide swarf away from the cutting zone, improving evacuation on both external and internal operations. Controlled chips reduce the likelihood of re-cutting and can improve the finished surface, lowering downstream rework. Combined with the sharp, process-safe edge of the grade, the insert supports efficient machining strategies where stable chip formation and consistent finishes are required rather than frequent manual intervention.

Practical system build and application guidance for shops

The insert is supplied in the ISO indexable-plate system: an ISO insert mounted in a matching external holder or boring bar, complemented by a shim/clamping set and replacement screws as required. Compatibility to a specific holder depends on form, clearance angle, tolerance class, fastening and plate dimensions. The article (SKU TUN6852459) is suitable for tasks that prioritise a sharp cutting edge and process security; for tailored cutting data and machining parameters, the available technical documentation can be consulted or applied experimentally within the recommended operating window.

Discuss application requirements with Metav Werkzeuge — quote article TUN6852459 for precise cutting data, compatibility checks and tailored recommendations via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6852459
• Manufacturer SKU: TUN6852459
• Dealer SKU: 6852459-Tungaloy

Facts

• Plate size: 12 mm
• Plate thickness: 4.76 mm
• Nose radius: 0.8 mm
• Clearance angle: 11°
• Approach angle: 90°
• Hole: with hole
• Hole style: cylindrical hole + one-sided countersink (40°–60°)

Special features

• Material: carbide
• Grade: AH120
• Coating: PVD-coated
• Plate shape: square
• Chipbreaker: one-sided
• Series: ISO turning indexable inserts
• Application: turning

FAQ

What materials is this insert intended for?
The SPMT120408 AH120 insert uses a wear- and fracture-resistant AH120 grade with a PVD coating and is intended for turning applications where a sharp cutting edge and process security are required; exact material suitability depends on cutting parameters and the selected chipbreaker.

What are the key geometrical dimensions to check for holder compatibility?
Check the plate size (12 mm), plate thickness (4.76 mm), nose radius (0.8 mm) and the ISO designation (120408) — these dimensions determine fitment in the corresponding ISO holder and ensure correct clamping and clearance.

How does the chipbreaker affect machining?
The single-sided chipbreaker on this insert promotes controlled chip formation and evacuation, which helps to protect the tool edge and improve surface finish during stable turning operations.

Is the insert ISO-compliant and easy to replace?
The insert is part of an ISO indexable-plate system; compatibility with a holder is determined by form, clearance angle, tolerance class, fastening, size and thickness, allowing straightforward replacement in standard ISO toolholders.

What components form the complete system for installation?
A complete system typically comprises the ISO indexable insert, a matching external holder or boring bar, a shim/clamping set and the necessary replacement screws to secure the plate in the toolholder.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.