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Description

MKR Miniature Cutting Insert, Solid Carbide Mini Boring Bar

The MKR miniature cutting insert has been specially developed for the precise machining of full-radius grooves in internal applications – wherever maximum contour accuracy is required in the smallest space. Made entirely from solid carbide, the MKR offers maximum rigidity and tool life, even when machining demanding materials at high cutting parameters.

The finely ground radius geometry ensures uniform groove shapes with smooth transitions – ideal for form-fit connections, sealing grooves, or functional surfaces. The insert can be used from a bore diameter of just 4.1 mm, making it perfect for fine-mechanical precision parts with tight tolerances.

The multilayer coating (AlTiN/TiSiN) provides high oxidation resistance and extreme hardness, ensuring thermally stable processes and significantly extended tool life. Whether in steel, stainless steel, cast iron, or non-ferrous metals, the MKR guarantees controlled chip formation and precise machining without shape deviations.

MKR – your solution for reliable full-radius grooving in confined spaces. Precise. Coated. Efficient.

technical data sheet for MKR miniature cutting insert made of solid carbide with details on radius geometry and application areas
Properties
Application: For Grooving (Full Radius)
Application Area (ISO): H = Hardened Steel, K = Cast Iron, M = Stainless Steel, N = Non-ferrous Metals, P = Steel, S = High-Temperature-Resistant Superalloy
Coating: AlTiN, TiSiN
Internal Cooling: Without Internal Cooling
Material: Solid Carbide
Type: Rechte Ausführung
Manufacturer information

Pflichtangaben gemäß GPSR Produktsicherheitsverordnung:

TILL TOOLS GmbH
Am Kebigsgraben 19
97616 Salz
Deutschland
E-Mail: info@tilltools.de

Reviews 12

12 of 12 reviews

Average rating of 4.92 out of 5 stars


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1 - 10 of 12 reviews

11 January 2026 08:42

Review with rating of 5 out of 5 stars

Kleiner Einsatz, große Wirkung

Die Miniatur-Platte klemmt sicher in der Mini-Bohrstange, Schnittbild bei Innenarbeiten sauber. Habe sie für Bohrungen ab 8 mm im Einsatz, kommt sehr schön rein und die Oberflächen sind top.

23 November 2025 23:18

Review with rating of 5 out of 5 stars

Vollradius sauber

Innen-Nut mit Radius in 1.2312 kommt gleichmäßig. Bin zufrieden.

3 October 2025 21:49

Review with rating of 5 out of 5 stars

Mini-Bohrstange solide fair im Segment

Die Mini-Bohrstange ist in der günstigen Klasse für feine Innenbearbeitung brauchbar. Kostensicher im Dauerbetrieb.

3 June 2025 13:52

Review with rating of 5 out of 5 stars

Radiusnuten im Innen

Miniatur-Einsatz schneidet saubere Vollradius-Nuten in Innenbohrungen. Für die Feinmechanik eine wichtige Ergänzung.

4 March 2025 13:48

Review with rating of 5 out of 5 stars

Mini-Einsatz schneidet ordentlich

Für feine Konturen im Automatenstahl, der Mini-Einsatz schneidet sauber. Klemmung bleibt fest. Schrauben sitzen sauber, keine Probleme beim Wechsel.

20 October 2024 15:08

Review with rating of 5 out of 5 stars

Mini-Einsatz für Innenkonturen

Schafft filigrane Innenformen an Kleinstteilen. Für den Preis in Ordnung, Schneide bleibt stabil.

7 September 2024 10:38

Review with rating of 5 out of 5 stars

Mikro-Nutenfräser für Vollradius

Der MKR-Mikro-Einsatz schneidet Vollradiusnuten im Innenbereich sauber, die Geometrie bleibt bei mir über viele Teile konstant ohne Ausbrüche.

9 July 2024 16:10

Review with rating of 5 out of 5 stars

Mini-Einsatz für kleine Konturen

Kleine Kontur, sauberer Schnitt. Die feine Schneide macht auch bei Miniaturteilen einen sauberen Job. Rundlauf bleibt bei längerer Auskragung akzeptabel, bin zufrieden.

26 June 2024 14:58

Review with rating of 4 out of 5 stars

Feines Konturwerkzeug

Gut geeignet für Miniatur-Konturen in kleinen Bauteilen, keine Auffälligkeiten bisher und die Klemmung ist sauber.

21 November 2023 10:21

Review with rating of 5 out of 5 stars

MKR-Mini-Bohrstange solide

Kleine Innenbohrungen gelingen damit sauber, der VHM-Schaft ist steif. Bin seit längerer Zeit mit dem Halter zufrieden. Werkzeug hat nach intensivem Einsatz seinen festen Platz in meinem Maschinenpark, die Werkzeugqualität ist robust genug für harte Spanabnahme und die Werkzeugaufnahme hält zuverlässig.

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