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Description

Boring Bar MTJNR/L 93°, Indexable Insert Holder

The Boring Bar MTJNR/L 93° accepts negative 60° triangular inserts of the TN family (TNMG, TNMM, TNMA) at a 93° approach angle. M clamping with top clamp and centre hole ensures a robust insert seat even under interrupted cuts in the bore.

M clamping secures the TNMG insert at the 93° approach angle with top clamp and centre hole for profile and contour work in the bore. The boring bar geometry is optimised for reach – deep bores with confined tool stations remain reliably accessible. The black-oxidised, tempered CrMo steel section absorbs high cutting forces without deflecting. The R and L versions match the respective turret geometry of the lathe.

The MTJNR/L 93° with the TN insert shape at the standard contour approach angle is a boring bar for profile work and contour finishing in the bore.

Scope of delivery: 1 MTJNR/L boring bar (without indexable insert) including shim, pin, clamp, screw, and wrench.

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

MTJNR boring bar / internal turning tool / turning tool holder – detail view – product image
Properties
Application: For Internal Turning
Approach Angle: 93°
Clamping System: M
Internal Cooling: Without Internal Cooling
Material: Steel
Suitable for Inserts: TN..1604..
Type: MTJNR/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

27 October 2025 22:36

Review with rating of 5 out of 5 stars

Halter sitzt wie er soll

Solide Qualität, nichts zu meckern. Sauber geschliffen, kein Aufbauen an der Schneide und gleichmäßige Oberfläche. Im Alltag spart das einiges an Nacharbeit. Gerade bei dem Preis echt eine runde Sache. Mehr braucht es für meinen Einsatz nicht.

21 July 2025 09:28

Review with rating of 5 out of 5 stars

TJ-Bohrstange 93 Grad solide

Die Bohrstange läuft in unserem Serienbetrieb unauffällig, die Klemmung hält die Platten auch bei tieferer Auskragung stabil.

18 April 2025 14:04

Review with rating of 5 out of 5 stars

Bohrstange 93 Grad, sehr brauchbar

Klemmt rautenförmige Platten fest, Kopierdrehen innen klappt gleichmäßig. Mehr als zufrieden, gute Ausführung und stabile Bearbeitung auch bei leichten Schrupparbeiten.

27 February 2025 00:01

Review with rating of 5 out of 5 stars

Innenhalter TJ 93 Grad stabil

Klassischer Innenhalter für Längsarbeit, kein Rattern bei vernünftiger Klemmlänge. Bin seit Monaten zufrieden. Werkzeug integriert sich nahtlos in meinen Ablauf.

26 January 2025 11:57

Review with rating of 5 out of 5 stars

Bohrstange läuft rund

Passt einwandfrei in die Aufnahme, die Klemmung greift fest und die Bearbeitung wird gleichmäßig.

6 December 2024 04:51

Review with rating of 5 out of 5 stars

Bohrstange für gehärtete Einsätze

Ich setze die Bohrstange beim Innendrehen eines gehärteten Einsatzes aus 1.2767 in der Hermle C22 ein. Der Schaft ist ausreichend steif um auch bei moderater Auskraglänge kein Schwingen zu zeigen. Die Platte klemmt sicher und die Maßhaltigkeit ist beeindruckend. Für meinen Werkzeugbau-Alltag eine sehr saubere Lösung.

29 May 2024 13:46

Review with rating of 5 out of 5 stars

Gute Bohrstange im Alltag

Innendrehen top, klemmt fest. Kein Rattern bei mir. Bin zufrieden, Preis passt absolut zu der Qualität die man hier bekommt.

7 February 2024 12:04

Review with rating of 5 out of 5 stars

93°-Bohrstange bewährt im Werkstattalltag

Klassiker für Innenkonturen. Bei Reparaturen an Wellen und Umbauten regelmäßig in Gebrauch. Platte sitzt fest, Stange läuft sauber.

1 January 2024 07:40

Review with rating of 5 out of 5 stars

Gute Bohrstange

Ruhiger Lauf, saubere Oberfläche. Platte wird gut geklemmt. Würde ich wieder bestellen.

27 October 2023 20:55

Review with rating of 5 out of 5 stars

Bohrstange TJ 93 günstig

Die Bohrstange für Längsinnenarbeit ist Standard, Preis merklich unter Marke.

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