EPGT 040100 J740 Wendeplatten - Tungaloy

Take advantage of the ISO‑standard geometry and the J740 cemented carbide grade for consistent performance in external and internal turning; order via Metav Werkzeuge or consult our team for holder compatibility and application advice.

EPGT 040100 J740 — Indexable turning insert for turning, rhombic 04, 11° clearance (Tungaloy)

EPGT040100 J740 is an ISO‑compatibility indexable insert designed for general turning operations where a balance of wear resistance and edge stability is required.

• ISO rhombic insert, size 04
• Cemented carbide, Tungaloy grade J740
• 11° clearance angle for secure seating
• Cylindrical hole with 40°–60° countersink

Precise cutting performance that enhances process reliability

The combination of an ISO‑conforming rhombic shape and the J740 carbide grade provides a reliable basis for repeatable turning operations. The geometry delivers a defined cutting direction and a 75° approach that supports robust chip flow, while the 11° clearance reduces rubbing and helps preserve the cutting edge. Because the insert is manufactured to ISO tolerances, interchangeability with suitable holders is straightforward: compatibility depends on form, relief angle, tolerance class, fastening method, size and thickness. The result is improved process security and fewer unexpected adjustments during production.

Faster tool changes and stable clamping reduce downtime

A secure seating concept is achieved through the cylindrical hole with a 40°–60° countersink, which ensures consistent positioning on the seat and an even distribution of clamping forces. The one‑sided chipbreaker supports controlled chip formation for the intended cutting direction and helps maintain a stable cutting edge during interrupted or continuous cuts. Together these features shorten setup times and reduce the frequency of rework, contributing to higher overall equipment effectiveness for turning centres and manual lathes.

Practical application advice for modern turning tasks

Designed for external and internal turning, this indexable insert is supplied as part of a system that includes the matching external holder or boring bar, a support shim or clamping set and replacement screws. Choosing the correct chipbreaker and grade in line with part geometry, material and machine stability is essential; the Tungaloy grade emphasises wear resistance and edge stability, making it a strong option where tool life and consistent surface finish are priorities. For standardised production runs the ISO format simplifies inventory management and makes changeovers predictable.

Contact Metav Werkzeuge for tailored recommendations on Tungaloy inserts and compatible holders; Metav Werkzeuge can advise on matching the EPGT040100 J740 to specific workpiece materials and machining conditions, or provide ordering guidance via info@metav-werkzeuge.com

Technical data

• Manufacturer article number: 6821731
• SKU: 6821731-Tungaloy
• Manufacturer SKU: TUN6821731

Core specifications

• Designation: EPGT040100
• Angle: 75°
• Clearance angle: 11°
• Thickness: 1.59 mm
• Size: 04
• Shape: rhombic
• Hole: with hole
• Hole style: cylindrical hole + one‑sided countersink (40°–60°)

Features & materials

• Material: cemented carbide
• Grade: J740 (Tungaloy carbide grade)
• Chipbreaker: one‑sided
• Application: turning (external and internal)
• Model series: ISO indexable turning inserts
• System components: compatible external holder/boring bar, support shim/clamping set, replacement screws

FAQ

What holders are compatible with this insert?
Compatibility is determined by the insert form, relief angle, tolerance class, fastening method, size and thickness; the EPGT040100 J740 fits holders and boring bars designed for ISO rhombic 04 inserts.

Which operations suit this grade and geometry best?
The J740 grade and rhombic 04 format are suited to general external and internal turning where a balance of wear resistance and edge stability is required.

How does the hole and countersink affect mounting?
The cylindrical hole with a 40°–60° countersink enables stable positioning and even clamping forces, improving repeatability when mounting the EPGT040100 J740 in an ISO‑compatible seat.

Can the chipbreaker be changed for different materials?
Selecting a chipbreaker matched to the workpiece material and cutting conditions is recommended; the one‑sided chipbreaker on this insert is intended for controlled chip formation in the specified turning direction.

Is this insert supplied with screws or clamping components?
The insert is part of a system; matching holders, support shims or clamping sets and replacement screws are used to complete the assembly for the EPGT040100 J740.

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.