TPMX 280708 UC2220 Wendeplatten - Tungaloy

Take advantage of the combination of wear resistance and edge stability delivered by the Tungaloy UC2220 grade and the secure 0.8 mm corner radius for predictable, productive drilling cycles; order the inserts or request application advice from Metav Werkzeuge.

TPMX280708R-B UC2220 triangular indexable insert for drilling by Tungaloy — 28 mm size, 0.8 mm radius

The TPMX280708R-B UC2220 is a triangular indexable insert designed for use in drilling systems, offering a carbide composition and a chipbreaker suited to reliable holemaking.

• Tungaloy grade UC2220 for wear resistance
• Triangular insert, 28 mm size
• 0.8 mm corner radius for edge security
• Chipbreaker B for improved chip control

Consistent edge life for demanding holemaking

The triangular indexable design delivers a reproducible cutting geometry that contributes to consistent edge life and reduced set-up variability. Manufactured in carbide and specified with the Tungaloy UC2220 grade, the insert balances wear resistance and toughness to resist chipping during interrupted cuts. The 0.8 mm corner radius supports secure cutting-edge engagement and makes the component suitable for medium-duty holemaking, while the defined relief and included angle ensure predictable tool behaviour in a range of holder designs. These characteristics help to maintain cycle times and reduce rework, supporting steady production throughput.

Better chip control and integration into drilling systems

Built with a chipbreaker B, the geometry promotes controlled chip formation and evacuation in through-hole and short-hole drilling operations. The insert is intended for use in a complete drilling system comprising a drill body, matching insert, clamping screw and key; correct matching of insert seat and drill diameter is essential for optimum performance. The combination of the triangular plate form and chipbreaker reduces the risk of chip entanglement and improves surface finish, which in turn lowers the need for secondary finishing operations and shortens process time per hole.

Material suitability and application guidance for productive machining

This insert is specified for general drilling applications and is recommended where a balance of edge stability and abrasion resistance is required. The plate thickness of 7.94 mm and the 28 mm nominal plate size give robust clamping engagement in the seat, while the 11° clearance angle and 60° included angle support effective cutting action. The carbide substrate and the UC2220 grading mean the component is well suited to a broad range of steels and general engineering materials; for specialised alloys or hardened materials, selection should follow trial cuts and holder compatibility checks. When used in matched systems, these inserts help to achieve predictable tool life and repeatable hole quality.

For application advice, availability or to discuss matching drill bodies and clamping solutions for Tungaloy inserts, contact Metav Werkzeuge via info@metav-werkzeuge.com or call +49 2822 7131930 for fast, expert guidance.

Technical data

• Article number: 4828246
• Manufacturer article number: 4828246
• SKU: 4828246-Tungaloy
• Manufacturer SKU: TUN4828246
• Model series: Bohrwendeschneidplatten
• Designation: TPMX280708R-B UC2220

Core measurements

• Insert size: 28 mm
• Corner radius: 0.8 mm
• Plate thickness: 7.94 mm
• Included angle: 60°
• Clearance angle: 11°
• ISO designation: 280708

Design & features

• Material: carbide
• Grade: UC2220
• Chipbreaker: B
• Plate form: triangular
• Hole style: special
• Application: drilling
• System components: drill body, matching insert, clamping screw, key

FAQ

What materials are suitable for machining with this insert?
The Tungaloy TPMX280708R-B UC2220 insert is formulated for a broad range of general engineering materials, with the carbide substrate and UC2220 grade offering a balance of wear resistance and toughness for many steels and similar alloys.

How should the insert be mounted in a drilling system?
Mount the triangular insert in the dedicated seat of the drill body, secure with the specified clamping screw and tighten using the matching key; verify insert and drill diameter alignment before production to ensure stable cutting.

What does the UC2220 grade provide for performance?
UC2220 provides enhanced resistance to abrasive wear while retaining edge stability, supporting longer cutting life in typical drilling cycles and helping to maintain consistent hole quality.

Is the 0.8 mm corner radius suitable for finishing operations?
A 0.8 mm corner radius delivers improved edge security and is best applied where a degree of robustness is needed; for fine finishing where minimal radius is required, a different insert geometry should be selected.

Are there any special considerations for chip management?
The B chipbreaker promotes controlled chip formation and evacuation; pairing the insert with an appropriate drill body and coolant strategy will further enhance chip control and surface finish.

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.