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Description

Boring Bar MCWNR/L 50°, Indexable Insert Holder

The MCWNR/L boring bar with a 50° approach angle is a powerful tool holder for internal machining – designed for internal longitudinal turning, internal face turning, and contour machining in bores with CNMG, CNGG, and CNMM indexable carbide inserts. Where conventional 90° boring bars reach their limits, the shallower approach angle of this internal turning tool opens up new possibilities for depth of cut and cutting edge stability.

The 50° approach angle distributes cutting forces over a larger cutting edge section and directs a portion of the forces axially towards the shank holder. This noticeably stabilises the cutting process in the bore and allows greater depths of cut per infeed than steeper approach angles. The shank, made from heat-treated tool steel, provides the bending rigidity that at long overhangs makes the difference between a clean surface and chatter marks. The lever clamping system holds the rhombic 80° negative insert securely with high clamping forces while leaving the rake face completely clear – a decisive advantage in internal machining, where limited chip space requires reliable chip evacuation. With CNMG inserts as double-sided negative indexable carbide inserts, four usable cutting edges per insert are available, significantly reducing tooling costs per bore.

A sound choice for workshops that need more depth of cut and process stability in internal machining than is possible with 90° or 75° boring bars – particularly for medium to heavy roughing in larger bore diameters.

Scope of delivery: 1 MCWNR/L boring bar (without indexable carbide insert) incl. washer, pin, clamp, screw, and wrench.

Note: The image shows the right-hand version (R).

MCWNR boring bar / internal turning tool / turning tool holder – detail view – product image
Properties
Application: For Internal Turning
Approach Angle: 50°
Clamping System: M
Internal Cooling: Without Internal Cooling
Material: Steel
Suitable for Inserts: CN..1204..
Type: MCWNR/L
Manufacturer information

Pflichtangaben gemäß GPSR Produktsicherheitsverordnung:

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

Reviews 10

10 of 10 reviews

Average rating of 5 out of 5 stars


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10 reviews

26 December 2025 10:27

Review with rating of 5 out of 5 stars

MCWNR-Bohrstange 50 Grad für Schulter

Die MCWNR-Bohrstange mit 50-Grad-Winkel schafft auch breitere Schulterbearbeitung angenehm stabil, bei uns in Stahl und Guss bisher ohne Probleme im Einsatz.

16 August 2025 01:26

Review with rating of 5 out of 5 stars

Flachwinklige Innenbearbeitung

Innendrehen in 1.2312 läuft rund. Klemmung sitzt sauber.

18 March 2025 00:54

Review with rating of 5 out of 5 stars

Spezialwinkel 50° sauber verarbeitet

Der 50°-Winkel ist für spezielle Kopierkonturen gut, Bohrstange ist insgesamt sauber verarbeitet. Klemmung ist stabil, Rundlauf unauffällig. Für den Einsatzzweck absolut brauchbar, Plattensitz ist plan gefräst. Bin mit dem Kauf wirklich zufrieden.

19 February 2025 10:37

Review with rating of 5 out of 5 stars

Flacher Winkel für sauberes Anschlagen

Der flache Einstellwinkel hilft bei breiten Anschlägen, die Bohrstange bleibt stabil und die Oberfläche kommt ordentlich. Für Kleinserien eine brauchbare Ergänzung in meinem Werkzeugsortiment, die Klemmung hält die Platten fest und der Lauf ist spielfrei.

15 December 2024 22:57

Review with rating of 5 out of 5 stars

Hält was es verspricht

Solide Qualität, nichts zu meckern. Ordentliche Härte, ordentliche Standzeit und gleichmäßige Oberfläche. Oberfläche war besser als erst gedacht. Kommt bei mir wieder auf die Liste.

21 November 2024 09:03

Review with rating of 5 out of 5 stars

Bohrstange 50 Grad für Spezialkonturen

50-Grad-Bohrstange ist bei bestimmten Innenprofilen echt Gold wert. Klemmung sitzt stramm und die Bearbeitung läuft ruhig durch.

16 October 2024 10:52

Review with rating of 5 out of 5 stars

Bohrstange mit 50 Grad Spitze

Extrem spitzwinklig, für innere Hinterschnitte richtig gut. Platte sitzt stabil auch bei großer Auskragung, bin zufrieden. Werde in der nächsten Bestellung weitere Geometrien mitordern.

31 August 2024 12:22

Review with rating of 5 out of 5 stars

Bohrstange 50 Grad flach fair solide

Die Bohrstange mit 50°-Winkel ist eine günstige Nischenlösung, Plattensitz wertig. Das Werkzeug gibt genau das, wofür man bezahlt.

2 August 2024 08:48

Review with rating of 5 out of 5 stars

Bohrstange mit flachem Einstellwinkel

Der 50°-Winkel gibt einen sehr flachen Anschnitt. Für bestimmte Innenkonturen das perfekte Werkzeug. Stabil gebaut, Platte sitzt präzise. Rüsten schnell erledigt.

5 September 2023 17:08

Review with rating of 5 out of 5 stars

Innenhalter 50 Grad flach

Nische für flache Innenkonturen, Plattensitz sauber. Kleine Ergänzung zum Haupthalter-Bestand.

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