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Description

MNR Miniature Cutting Insert, Solid Carbide Mini Boring Bar

The MNR miniature cutting insert has been specially developed for internal boring in micro machining – wherever conventional tools reach their limits. Made of high-performance solid carbide, this tool combines maximum dimensional accuracy, rigidity, and process reliability in the smallest possible space.

With its 5° clearance angle and precisely ground cutting geometry, the MNR ensures smooth cutting, reduced cutting forces, and minimal burr formation – essential for delicate components and thin-walled structures.

Thanks to its high-performance multilayer coating (AlTiN/TiSiN), the MNR offers excellent protection against thermal wear, oxidation, and built-up edge formation – especially when machining stainless steels, special alloys, and hardened materials.

MNR – the boring tool of choice for highest precision, tight tolerances, and reliable micro internal machining.

Data sheet MNR mini boring bar with details on AlTiN/TiSiN coating and cutting geometry
Properties
Application: For Boring
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 9

9 of 9 reviews

Average rating of 4.89 out of 5 stars


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9 reviews

1 April 2026 18:34

Review with rating of 5 out of 5 stars

Mini-Bohrstange MNR gut

Kleine Innengewinde und Konturen gelingen mit dem Halter sauber, der VHM-Schaft macht den Unterschied. Im Feinschlichtbetrieb sehr angenehm zu fahren.

27 March 2026 15:48

Review with rating of 5 out of 5 stars

MNR-Mikro-Schneideinsatz Ausdrehen

Der Miniatur-Einsatz macht Ausdrehen in kleinen Bohrungen sauber, die Wiederholgenauigkeit bleibt auch bei sehr engen Innendurchmessern konstant.

4 July 2025 04:03

Review with rating of 5 out of 5 stars

Kleinwerkzeug für feine Innenaufgaben passend

Feine Innenaufgaben lassen sich damit gut machen. Schneide ist scharf geschliffen, Rundlauf bleibt sauber auch bei längerer Auskraglänge. Für Miniaturteile richtig praktisch.

1 February 2025 13:12

Review with rating of 5 out of 5 stars

Mikro-Einsatz für Ausdrehen

Der Mikro-Schneideinsatz erlaubt mir Ausdreharbeiten in sehr kleinen Bohrungen an Formdüsen. Die Kante bleibt stabil, die Maßhaltigkeit passt für diese Baugröße und die Handhabung geht gut von der Hand.

19 December 2024 14:31

Review with rating of 5 out of 5 stars

Kleiner Miniatur-Einsatz

Mini-Einsatz klemmt gut in der Bohrstange, bringt feine Oberflächen bei Innenradien in Baustahl.

19 December 2024 08:26

Review with rating of 5 out of 5 stars

Mini-Bohrstange in der feinen Präzision

Kleine Innenbearbeitung top, die VHM-Stange ist steif und präzise. Für meine Mikrofertigung ideal, Schneide hält gut.

2 July 2024 15:27

Review with rating of 5 out of 5 stars

Feine Innenkontur klappt

Klemmung ist spielfrei, die Schneide bleibt sauber und die Konturen kommen präzise raus. Top für meine Miniaturarbeiten.

25 June 2024 16:42

Review with rating of 5 out of 5 stars

Mini-Einsatz für filigrane Innenkonturen

Präzise gefertigt, Schneide sitzt sauber. Für feinste Innenformen an Kleinstserien unverzichtbar.

13 June 2024 21:29

Review with rating of 4 out of 5 stars

Solider Eindruck

Für Innenarbeiten passt die Stange. Sauberer Schnitt, ordentliche Qualität und gute Verarbeitung. Qualität ist über die letzten Bestellungen konstant geblieben. Muss sich noch etwas beweisen, bisher aber okay.

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