SPMT 120408 T5115 Wendeplatten - Tungaloy

The combination of a CVD-coated carbide substrate and the T5115 universal grade yields a robust, wear‑resistant cutting edge ideally suited to cast iron turning; consistent geometry and an ISO‑compliant form simplify tooling selection and reduce setup time. Order the insert directly via Metav Werkzeuge or consult our technical team for application support.

SPMT 120408 T5115 – ISO turning insert for cast iron (Tungaloy)

The SPMT120408 T5115 is an ISO‑standard turning indexable insert designed for external and internal turning of cast iron, offering balanced wear resistance and edge stability in a square 12 mm format.

• CVD-coated carbide for wear resistance
• Universal T5115 grade for cast iron
• Square 12 mm insert with 0.8 mm corner radius
• One-sided chipbreaker for controlled chips

Longer tool life through balanced grade and coating

The CVD‑coated carbide substrate combined with the T5115 grade provides a balance between wear resistance and edge stability, which reduces flank wear during continuous cast iron machining. This composition lowers the frequency of index changes and supports longer tool life, translating into fewer interruptions on the shop floor and improved component throughput. The result is predictable performance when machining grey and nodular cast irons, where controlled edge strength prevents premature chipping.

ISO compatibility and secure clamping for consistent setups

Matching the insert to a suitable holder depends on geometry and fixation; the ISO form and the defined 11° relief angle mean the insert integrates with standard external holders and boring bars that accept SPMT‑type plates. The cylindrical centre hole with single‑side countersink (40°–60°) ensures secure seating and repeatable clamping, reducing the risk of improper mounting and the consequent vibration or dimensional drift. A properly matched system (insert, shim/clamp set and replacement screws) supports reliable process stability and faster tool changes.

Geometry that controls cutting forces and surface finish

A square plate with a 12 mm side and a 0.8 mm corner radius delivers a compromise between strength and finish: the 0.8 mm radius dampens cutting shocks for roughing passes while preserving an acceptable surface quality for semi‑finishing. The orthogonal 90° plate angle provides predictable radial engagement, simplifying cycle planning and making it easier to maintain tolerances on turned components. Choosing this geometry helps maintain repeatable cutting forces and steadier machining, especially on interrupted or variable cross‑section workpieces.

Practical system guidance to increase productivity

The insert is part of a typical ISO turning system: an indexable plate, a compatible external holder or boring bar, and the corresponding shim/clamping kit plus spare screws. Use the one‑sided chipbreaker when machining cast iron to control chip flow and avoid entanglement; select finer or coarser grades according to feed and depth‑of‑cut. Proper selection reduces machine idle time and enhances process economics through extended insert life and fewer unscheduled changes.

For application advice on the Tungaloy SPMT120408 T5115 insert or to confirm stock and delivery with Metav Werkzeuge, please contact info@metav-werkzeuge.com or call +49 2822 7131930.

Technical data

• Article number: 6864802
• SKU: 6864802-Tungaloy
• Manufacturer SKU: TUN6864802
• Manufacturer: Tungaloy

Facts

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Relief angle: 11°
• Lead/approach angle: 90°
• Hole style: with hole; cylindrical hole + one‑side countersink (40°–60°)

Special features

• Material: carbide
• Coating: CVD
• Grade: T5115
• Shape: square
• Chipbreaker: one‑sided
• Application: turning
• Model series: ISO turning indexable inserts
• System components: external holder or boring bar, shim/clamping kit, replacement screws

FAQ

What materials is this insert intended for?
The Tungaloy SPMT120408 T5115 insert is formulated as a universal grade for cast iron, offering a balance of wear resistance and edge stability suitable for grey and nodular cast irons.

Can the insert be used for internal turning operations?
Yes, the ISO format and defined geometry allow use in both external and internal turning when paired with a compatible boring bar or internal turning holder.

How does the 0.8 mm corner radius affect performance?
A 0.8 mm corner radius reduces cutting shocks and improves edge strength, which helps in interrupted cuts and contributes to a more stable surface finish than a sharper corner.

What is the benefit of the one-sided chipbreaker?
The one‑sided chipbreaker controls chip formation and evacuation during cast iron machining, reducing the risk of chip snarling and improving tool life through consistent cutting conditions.

Which components are required to complete a working tool system?
A complete system includes the ISO insert, a matched external holder or boring bar, a shim/clamping kit and suitable replacement screws to ensure secure and repeatable clamping.

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.