SPMT 120408 NS9530 Wendeplatten - Tungaloy

Take advantage of the combination of a sharp finishing grade, predictable ISO compatibility and a single‑sided chipbreaker for consistent surface quality and efficient turning cycles; for purchasing or technical advice contact Metav Werkzeuge.

SPMT120408 NS9530 Turning Insert (SPMT 120408) – Tungaloy

A SPMT120408 NS9530 indexable turning insert designed as a finishing grade for steel turning, offering a sharp cutting edge and low cutting forces for continuous cuts and small depths of cut.

• ISO SPMT120408 square insert for turning
• Uncoated cermet grade NS9530 for finishing
• Sharp cutting edge for low cutting forces
• Cylindrical hole with one-sided countersink

Achieve consistently high surface finish on steel components

The uncoated cermet grade NS9530 is engineered as a finishing sort for steel, providing a very sharp cutting edge and reduced cutting forces. These characteristics result in a finer surface texture and fewer secondary finishing operations, especially during continuous cutting and small depths of cut. For workshops aiming to improve first‑pass quality, the low cutting forces help to reduce spindle load and vibration, contributing to repeatable component tolerances. The result is shorter process chains and improved cost efficiency per part.

Predictable fit and secure clamping in ISO systems

Designed to the ISO format, the SPMT120408 geometry ensures interchangeability with standard holder systems when the holder matches form, clearance angle, tolerance class, fastening and thickness. The insert is square with a 90° included angle, a 0.8 mm corner radius, and a plate thickness of 4.76 mm, securing stable seating and repeatable runout. The insert’s cylindrical hole with a single‑side countersink (40°–60°) provides reliable clamping with common screws and clamping kits. These attributes reduce setup time and simplify tool management across multi‑machine environments.

Practical machining benefits for everyday turning

The single‑sided chipbreaker is optimised for finishing cuts, promoting consistent chip flow and easier evacuation on external and internal turning operations. Combined with the low cutting forces of the cermet grade, this leads to improved cycle stability and less tendency for built‑up edge. Where surface integrity and dimensional accuracy are priorities, fewer reworks and a predictable tool change schedule translate into measurable productivity gains. The finishing nature of the grade is particularly effective on continuous cuts in steel, where a sharp edge yields superior tactile and optical surface results.

Selection guidance and workshop handling

When selecting inserts, match the chipbreaker and NS9530 grade to workpiece material, machining method and machine stability. The 0.8 mm corner radius balances edge strength with fine finish; smaller radii give finer edges but require stable setups. Ensure the holder and screw conform to the ISO form and tolerance class to maintain the expected performance of this finishing insert. The insert forms part of a system that includes the indexable insert, suitable external holder or boring bar, shim/underplate and replacement screws; using the correct components maintains cutting reliability and repeatability.

Contact Metav Werkzeuge to confirm suitability, request a quotation or obtain application advice for this Tungaloy finishing insert; technical specialists are available to assist with holder compatibility and process integration.

Technical data

• Article number: 6998507
• SKU: 6998507-Tungaloy
• Manufacturer SKU: TUN6998507
• Label: SPMT120408 NS9530 Tungaloy-Wendeplatte

Facts

• Radius / corner: 0.8 mm
• Included angle: 90°
• Clearance angle: 11°
• Plate thickness: 4.76 mm
• Plate size: 12

Special features

• ISO‑standard SPMT120408 format
• Uncoated cermet cutting grade NS9530
• Single‑sided chipbreaker
• Square plate geometry
• Cylindrical hole with one‑side countersink (40°–60°)
• Application: external and internal turning
• Typical system: insert, holder/boring bar, shim/clamping kit, replacement screws

FAQ

Which materials is this insert intended for?
The NS9530 uncoated cermet grade is intended primarily for steel finishing operations; the SPMT120408 insert performs best on continuous cuts and small depths of cut where a sharp edge and fine surface are required.

Is the insert compatible with standard ISO holders?
Compatibility depends on matching the ISO form, clearance angle, tolerance class, fastening method, size and thickness; when matched correctly the SPMT120408 insert fits standard holders for reliable clamping.

What chip control can be expected from this geometry?
The single‑sided chipbreaker offers controlled chip formation for finishing cuts, aiding evacuation and reducing the risk of built‑up edge during continuous turning.

How does NS9530 compare to coated grades for finishing?
NS9530, as an uncoated cermet, delivers a sharper edge and lower cutting forces that favour superior surface finish on steel; coated grades may offer higher wear resistance but can be less sharp for final finishing passes.

What should be considered for insert handling and storage?
Handle inserts carefully to preserve the sharp edge; store them in their original packaging, and verify clamping screws and shims for correct fit to maintain the insert’s repeatable performance.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld

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.