SPMN 120308 UX30 Wendeplatten - Tungaloy

Take advantage of the combination of a sharp cutting edge, the UX30 uncoated carbide grade and ISO compatibility for controlled chip formation and low cutting forces; order directly via Metav Werkzeuge or consult our specialists for matching holders and clamping sets.

SPMN120308 UX30 square indexable turning insert by Tungaloy — ISO 120308, sharp cutting edge for low cutting forces

SPMN120308 UX30 is an ISO-conforming indexable insert designed for external and internal turning, offering a sharp cutting edge and consistent chip behaviour for stable machining.

• ISO SPMN120308 compatible square insert
• UX30 uncoated carbide with sharp cutting edge
• 0.8 mm nose radius for fine profile turning
• 11° clearance angle for reduced cutting forces

Precision cutting with consistently low cutting forces

The uncoated carbide composition and the UX30 grade deliver a sharp cut geometry that emphasises low specific cutting forces and predictable tool life. For turning operations where minimal power draw and controlled chip formation are priorities, the square 90° geometry ensures reliable engagement and a defined contact area. The combination of a 12 mm side and a 3.18 mm plate thickness contributes to mechanical stability, while the modest 0.8 mm nose radius supports accurate profile generation with reduced vibration. These features together lead to efficient material removal and repeatable part quality.

Stable chip behaviour and improved surface results

A sharp cutting edge, in conjunction with the insert’s geometry, promotes regular chip formation and helps avoid undesirable built-up edge in many turning scenarios. The insert’s characteristics are particularly suited to operations where clean chip evacuation and surface consistency matter; the absence of a pre-formed chipbreaker means the chip control strategy should be selected to match the workpiece material and cutting conditions. With a defined clearance angle of 11°, flank contact is minimised, which supports improved surface finish and prolonged tool edge integrity.

Straightforward integration into ISO tool systems

The insert conforms to ISO designation 120308, ensuring compatibility with a wide range of approved toolholders when the holder matches form, clearance angle, tolerance class, clamping method, size and thickness. The square shape and lack of a centre hole require holders or adaptors that clamp by the insert seating and screw arrangement. This design simplifies spare-part management: the same insert geometry can be used across multiple holder families provided the mechanical interfaces match, reducing setup complexity and inventory variety.

Durable, economical performance for production environments

Although uncoated, the UX30 grade is specified to deliver a reliable cutting edge in applications demanding low cutting forces and good chip control; this can translate into lower energy consumption and improved productivity over time. The robust plate dimensions (12 mm side, 3.18 mm thickness) combined with ISO-standard form allow predictable wear behaviour and easier process planning. Selecting the correct grade and chip control strategy helps to maximise run lengths and reduce unplanned tool changes, contributing to a more economical machining process.

Contact Metav Werkzeuge for tailored advice on Tungaloy SPMN120308 UX30 inserts, requests for matching holders, or to obtain technical data tailored to specific turning applications

Technical data

• Article number: 6807171
• Manufacturer SKU: TUN6807171
• SKU: 6807171-Tungaloy
• Model series: ISO turning indexable inserts
• Item designation: SPMN120308 UX30 Tungaloy insert

Key figures

• Insert size: 12 mm
• Thickness: 3.18 mm
• Nose radius: 0.8 mm
• Clearance angle: 11°
• Insert angle: 90°
• ISO code: 120308

Design & special features

• Material: cemented carbide (uncoated)
• Carbide grade: UX30
• Shape: square
• Centre hole: without hole
• Chipbreaker: none
• Application: turning (external and internal)
• Compatibility: ISO-conforming; depends on holder form, clearance angle and clamping

FAQ

What turning tasks is this insert suited to?
The SPMN120308 UX30 insert is intended for external and internal turning where low cutting forces and consistent chip formation are required; it is particularly useful for fine profile work with a 0.8 mm nose radius.

How is holder compatibility ensured for this insert?
Compatibility depends on the holder matching the ISO form and the insert’s dimensions and clearance angle; the insert fits into ISO-compliant square seats that secure the plate by clamping rather than a centre hole.

Is the SPMN120308 UX30 coated?
No, this indexable insert is supplied uncoated in the UX30 carbide grade to provide a sharp cutting edge and predictable force characteristics.

Which features support surface quality and tool life?
The 11° clearance angle and the precise 90° square geometry reduce flank contact and help maintain a stable cutting edge, contributing to improved surface finish and repeatable tool performance.

How should chip control be approached with this insert?
As the insert has no integrated chipbreaker, chip control should be addressed via machining parameters, coolant strategy and the selection of an appropriate external or internal turning holder that aids chip evacuation.

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.